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Han X, Li H, Zhang D, Li H, Zou X, Sui R. Longitudinal Natural History Study of Visual Function in Bietti Crystalline Dystrophy: Implications for Early Intervention. Invest Ophthalmol Vis Sci 2024; 65:25. [PMID: 38602838 PMCID: PMC11018262 DOI: 10.1167/iovs.65.4.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 03/14/2024] [Indexed: 04/13/2024] Open
Abstract
Purpose To delineate the natural history of visual function parameters over time in individuals with Bietti crystalline dystrophy. Methods This was a single-center retrospective longitudinal cohort study. Participants (n = 29) with a clinical diagnosis of Bietti crystalline dystrophy who harbored two alleles of disease-causing variants of the cytochrome P450 family 4 subfamily V member 2 gene (CYP4V2) were enrolled. Best-corrected visual acuity (BCVA), visual field (VF), and full-field ERG (ffERG) at baseline and their changes during the follow-up period were evaluated. Annual progression rates were calculated using three methods. Results The mean age at the initial visit was 34.2 ± 7.5 years, with 5.9 ± 3.1 years follow-up. The annual progression rate from the longitudinal analysis using averaged individual progression rates was 0.079 logMAR units for BCVA, 1.14 dB for mean defect (MD) value of VF, and -18.06 µV and -5.45 µV for the b-wave amplitudes of scotopic 3.0 ERG and photopic 3.0 ERG, respectively. Mixed-model linear regression revealed annual progression rates of 0.068 logMAR units, 0.86 dB, -13.29 µV, and -3.75 µV, respectively. Cross-sectional progression rates from visual function versus age at baseline were 0.011 logMAR units, 0.47 dB, -1.85 µV, and -1.07 µV, respectively, which were significantly slower than those from the longitudinal data. Interocular symmetries for the MD values of VF and ffERG were good. Conclusions Annual BCVA, VF, and ffERG progression rates were rapid, emphasizing the need for regular follow-up and early intervention. The progression rate cannot be inferred accurately from cross-sectional data from patients of different ages.
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Affiliation(s)
- Xiaoxu Han
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huajin Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dingding Zhang
- Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuan Zou
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Brock DC, Wang M, Hussain HMJ, Rauch DE, Marra M, Pennesi ME, Yang P, Everett L, Ajlan RS, Colbert J, Porto FBO, Matynia A, Gorin MB, Koenekoop RK, Lopez I, Sui R, Zou G, Li Y, Chen R. Comparative analysis of in-silico tools in identifying pathogenic variants in dominant inherited retinal diseases. Hum Mol Genet 2024:ddae028. [PMID: 38453143 DOI: 10.1093/hmg/ddae028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/09/2024] Open
Abstract
Inherited retinal diseases (IRDs) are a group of rare genetic eye conditions that cause blindness. Despite progress in identifying genes associated with IRDs, improvements are necessary for classifying rare autosomal dominant (AD) disorders. AD diseases are highly heterogenous, with causal variants being restricted to specific amino acid changes within certain protein domains, making AD conditions difficult to classify. Here, we aim to determine the top-performing in-silico tools for predicting the pathogenicity of AD IRD variants. We annotated variants from ClinVar and benchmarked 39 variant classifier tools on IRD genes, split by inheritance pattern. Using area-under-the-curve (AUC) analysis, we determined the top-performing tools and defined thresholds for variant pathogenicity. Top-performing tools were assessed using genome sequencing on a cohort of participants with IRDs of unknown etiology. MutScore achieved the highest accuracy within AD genes, yielding an AUC of 0.969. When filtering for AD gain-of-function and dominant negative variants, BayesDel had the highest accuracy with an AUC of 0.997. Five participants with variants in NR2E3, RHO, GUCA1A, and GUCY2D were confirmed to have dominantly inherited disease based on pedigree, phenotype, and segregation analysis. We identified two uncharacterized variants in GUCA1A (c.428T>A, p.Ile143Thr) and RHO (c.631C>G, p.His211Asp) in three participants. Our findings support using a multi-classifier approach comprised of new missense classifier tools to identify pathogenic variants in participants with AD IRDs. Our results provide a foundation for improved genetic diagnosis for people with IRDs.
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Affiliation(s)
- Daniel C Brock
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
- Medical Scientist Training Program, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Meng Wang
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Hafiz Muhammad Jafar Hussain
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - David E Rauch
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Molly Marra
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, 515 SW Campus Drive, Portland, OR 97239, United States
| | - Mark E Pennesi
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, 515 SW Campus Drive, Portland, OR 97239, United States
| | - Paul Yang
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, 515 SW Campus Drive, Portland, OR 97239, United States
| | - Lesley Everett
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, 515 SW Campus Drive, Portland, OR 97239, United States
| | - Radwan S Ajlan
- Department of Ophthalmology, University of Kansas School of Medicine, 3901 Rainbow Blvd, Kansas City, KS 66160, United States
| | - Jason Colbert
- Department of Ophthalmology, University of Kansas School of Medicine, 3901 Rainbow Blvd, Kansas City, KS 66160, United States
| | - Fernanda Belga Ottoni Porto
- INRET Clínica e Centro de Pesquisa, Rua dos Otoni, 735/507 - Santa Efigênia, Belo Horizonte, MG 30150270, Brazil
- Department of Ophthalmology, Santa Casa de Misericórdia de Belo Horizonte, Av. Francisco Sales, 1111 - Santa Efigênia, Belo Horizonte, MG 30150221, Brazil
- Centro Oftalmológico de Minas Gerais, R. Santa Catarina, 941 - Lourdes, Belo Horizonte, MG 30180070, Brazil
| | - Anna Matynia
- College of Optometry, University of Houston, 4401 Martin Luther King Boulevard, Houston, TX 77004, United States
| | - Michael B Gorin
- Jules Stein Eye Institute, University of California Los Angeles, 100 Stein Plaza, Los Angeles, CA 90095, United States
- Department of Ophthalmology, University of California Los Angeles David Geffen School of Medicine, 10833 Le Conte Ave, Los Angeles, CA 90095, United States
| | - Robert K Koenekoop
- McGill Ocular Genetics Laboratory and Centre, Department of Paediatric Surgery, Human Genetics, and Ophthalmology, McGill University Health Centre, 5252 Boul de Maisonneuve ouest, Montreal, QC H4A 3S5, Canada
| | - Irma Lopez
- McGill Ocular Genetics Laboratory and Centre, Department of Paediatric Surgery, Human Genetics, and Ophthalmology, McGill University Health Centre, 5252 Boul de Maisonneuve ouest, Montreal, QC H4A 3S5, Canada
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, WC67+HW Dongcheng, Beijing 100005, China
| | - Gang Zou
- Department of Ophthalmology, Ningxia Eye Hospital, People's Hospital of Ningxia Hui Autonomous Region, First Affiliated Hospital of Northwest University for Nationalities, Ningxia Clinical Research Center on Diseases of Blindness in Eye, F4RJ+43 Xixia District, Yinchuan, Ningxia, China
| | - Yumei Li
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
- Human Genome Sequencing Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Rui Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
- Human Genome Sequencing Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
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Wei X, Li H, Zhu T, Sun Z, Sui R. Genotype-Phenotype Associations in an X-Linked Retinoschisis Patient Cohort: The Molecular Dynamic Insight and a Promising SD-OCT Indicator. Invest Ophthalmol Vis Sci 2024; 65:17. [PMID: 38324300 PMCID: PMC10854265 DOI: 10.1167/iovs.65.2.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/23/2024] [Indexed: 02/08/2024] Open
Abstract
Purpose This study investigated a three-dimensional indicator in spectral-domain optical coherence tomography (SD-OCT) and established phenotype-genotype correlation in X-linked retinoschisis (XLRS). Methods Thirty-seven patients with XLRS underwent comprehensive ophthalmic examinations, including visual acuity (VA), fundus examination, electroretinogram (ERG), and SD-OCT. SD-OCT parameters of central foveal thickness (CFT), cyst cavity volume (CCV), and photoreceptor outer segment length were assessed. CCV was defined as the sum of the areas of cyst cavities in uential B-scans, measured automatically by self-developed software (OCT-CCSEG). Structural changes of the protein associated with missense variants were quantified by molecular dynamics (MD). The correlation between genotype and phenotype was analyzed. Results Twenty-seven different RS1 variants were identified, including a novel variant c.336_337insT(p.L113Sfs*8). The average age of onset was 14.76 ± 15.75 years, and the mean VA was 0.84 ± 0.43 logMAR. The mean CCV was 1.69 ± 1.87 mm3, correlating significantly with CFT (R = 0.66; P < 0.01). In the genotype-phenotype analysis of missense variants, CCV significantly correlated with the structural effect on the protein of mutational changes referred to as wild type, including root-mean-square deviation (R = 0.34; P = 0.04), solvent accessible surface area (R = 0.38; P = 0.02), and surface hydrophobic area (R = 0.37; P = 0.03). The amplitude of scotopic 3.0 ERG a-waves and b-waves significantly correlated with the percentage change of the β-strand in the secondary structure (a-wave: R = -0.58, P < 0.01; b-wave: R = -0.53, P < 0.01). Conclusions CCV is a promising indicator to quantify the structural disorganization of XLRS retina. The OCT-CCSEG software calculated CCV automatically, potentially facilitating prognosis assessment and development of personalized treatment. Moreover, MD-involved genotype-phenotype analysis suggests an association between protein structural alterations and XLRS severity measured by CCV and ERG.
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Affiliation(s)
- Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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Fujinami-Yokokawa Y, Joo K, Liu X, Tsunoda K, Kondo M, Ahn SJ, Robson AG, Naka I, Ohashi J, Li H, Yang L, Arno G, Pontikos N, Park KH, Michaelides M, Tachimori H, Miyata H, Sui R, Woo SJ, Fujinami K. Distinct Clinical Effects of Two RP1L1 Hotspots in East Asian Patients With Occult Macular Dystrophy (Miyake Disease): EAOMD Report 4. Invest Ophthalmol Vis Sci 2024; 65:41. [PMID: 38265784 PMCID: PMC10810149 DOI: 10.1167/iovs.65.1.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 12/20/2023] [Indexed: 01/25/2024] Open
Abstract
Purpose To characterize the clinical effects of two RP1L1 hotspots in patients with East Asian occult macular dystrophy (OMD). Methods Fifty-one patients diagnosed with OMD harboring monoallelic pathogenic RP1L1 variants (Miyake disease) from Japan, South Korea, and China were enrolled. Patients were classified into two genotype groups: group A, p.R45W, and group B, missense variants located between amino acids (aa) 1196 and 1201. The clinical parameters of the two genotypes were compared, and deep learning based on spectral-domain optical coherence tomographic (SD-OCT) images was used to distinguish the morphologic differences. Results Groups A and B included 29 and 22 patients, respectively. The median age of onset in groups A and B was 14.0 and 40.0 years, respectively. The median logMAR visual acuity of groups A and B was 0.70 and 0.51, respectively, and the survival curve analysis revealed a 15-year difference in vision loss (logMAR 0.22). A statistically significant difference was observed in the visual field classification, but no significant difference was found in the multifocal electroretinographic classification. High accuracy (75.4%) was achieved in classifying genotype groups based on SD-OCT images using machine learning. Conclusions Distinct clinical severities and morphologic phenotypes supported by artificial intelligence-based classification were derived from the two investigated RP1L1 hotspots: a more severe phenotype (p.R45W) and a milder phenotype (1196-1201 aa). This newly identified genotype-phenotype association will be valuable for medical care and the design of therapeutic trials.
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Affiliation(s)
- Yu Fujinami-Yokokawa
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Division of Public Health, Yokokawa Clinic, Suita, Japan
| | - Kwangsic Joo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Xiao Liu
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- Southwest Hospital, Army Medical University, Chongqing, China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
| | - Kazushige Tsunoda
- Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
| | - Mineo Kondo
- Department of Ophthalmology, Mie University Graduate School of Medicine, Mie, Japan
| | - Seong Joon Ahn
- Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Anthony G. Robson
- UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, London, United Kingdom
| | - Izumi Naka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Jun Ohashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Gavin Arno
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, London, United Kingdom
| | - Nikolas Pontikos
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, London, United Kingdom
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Michel Michaelides
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, London, United Kingdom
| | - Hisateru Tachimori
- Endowed Course for Health System Innovation, Keio University School of Medicine, Tokyo, Japan
| | - Hiroaki Miyata
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Moorfields Eye Hospital, London, United Kingdom
| | - for the East Asia Inherited Retinal Disease Society Study Group*
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- UCL Institute of Ophthalmology, London, United Kingdom
- Division of Public Health, Yokokawa Clinic, Suita, Japan
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
- Southwest Hospital, Army Medical University, Chongqing, China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, China
- Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
- Department of Ophthalmology, Mie University Graduate School of Medicine, Mie, Japan
- Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, Republic of Korea
- Moorfields Eye Hospital, London, United Kingdom
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Endowed Course for Health System Innovation, Keio University School of Medicine, Tokyo, Japan
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5
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Wong WM, Tham YC, Simunovic MP, Chen FK, Luu CD, Chen H, Jin ZB, Shen RJ, Li S, Sui R, Zhao C, Yang L, Bhende M, Raman R, Sen P, Ghosh A, Poornachandra B, Sasongko MB, Arianti A, Chia V, Mangunsong CO, Manurung F, Fujinami K, Ikeda H, Woo SJ, Kim SJ, Mohd Khialdin S, Othman O, Bastion MLC, Kamalden AT, Lott PWP, Fong K, Shunmugam M, Lim A, Thapa R, Pradhan E, Rajkarnikar SP, Adhikari S, Ibañez BMBI, Koh A, Chan CMM, Fenner BJ, Tan TE, Laude A, Ngo WK, Holder GE, Su X, Chen TC, Wang NK, Kang EYC, Huang CH, Surawatsatien N, Pisuchpen P, Sujirakul T, Kumaramanickavel G, Singh M, Leroy B, Michaelides M, Cheng CY, Chen LJ, Chan HW. Rationale and protocol paper for the Asia Pacific Network for inherited eye diseases. Asia Pac J Ophthalmol (Phila) 2024; 13:100030. [PMID: 38233300 DOI: 10.1016/j.apjo.2023.100030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
PURPOSE There are major gaps in our knowledge of hereditary ocular conditions in the Asia-Pacific population, which comprises approximately 60% of the world's population. Therefore, a concerted regional effort is urgently needed to close this critical knowledge gap and apply precision medicine technology to improve the quality of lives of these patients in the Asia-Pacific region. DESIGN Multi-national, multi-center collaborative network. METHODS The Research Standing Committee of the Asia-Pacific Academy of Ophthalmology and the Asia-Pacific Society of Eye Genetics fostered this research collaboration, which brings together renowned institutions and experts for inherited eye diseases in the Asia-Pacific region. The immediate priority of the network will be inherited retinal diseases (IRDs), where there is a lack of detailed characterization of these conditions and in the number of established registries. RESULTS The network comprises 55 members from 35 centers, spanning 12 countries and regions, including Australia, China, India, Indonesia, Japan, South Korea, Malaysia, Nepal, Philippines, Singapore, Taiwan, and Thailand. The steering committee comprises ophthalmologists with experience in consortia for eye diseases in the Asia-Pacific region, leading ophthalmologists and vision scientists in the field of IRDs internationally, and ophthalmic geneticists. CONCLUSIONS The Asia Pacific Inherited Eye Disease (APIED) network aims to (1) improve genotyping capabilities and expertise to increase early and accurate genetic diagnosis of IRDs, (2) harmonise deep phenotyping practices and utilization of ontological terms, and (3) establish high-quality, multi-user, federated disease registries that will facilitate patient care, genetic counseling, and research of IRDs regionally and internationally.
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Affiliation(s)
- Wendy M Wong
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Ophthalmology, National University Hospital, National University Health System, Singapore
| | - Yih Chung Tham
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Matthew P Simunovic
- Save Sight Institute, The University of Sydney, Sydney, Australia; Retinal Unit, Sydney Eye Hospital, Sydney, Australia
| | - Fred Kuanfu Chen
- Centre for Ophthalmology and Visual Science (Lions Eye Institute), The University of Western Australia, Nedlands, Western Australia, Australia; Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia
| | - Chi D Luu
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia; Ophthalmology, Department of Surgery, University of Melbourne, East Melbourne, Victoria, Australia
| | - Haoyu Chen
- Joint Shantou International Eye Center, Shantou University & The Chinese University of Hong Kong, Shantou, China
| | - Zi-Bing Jin
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China
| | - Ren-Juan Shen
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China
| | - Shiying Li
- Department of Ophthalmology in Xiang'an Hospital of Xiamen University and Medical Center of Xiamen University, School of Medicine in Xiamen University, Eye Institute of Xiamen University, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Fujian Engineering and Research Center of Eye Regenerative Medicine, Xiamen, Fujian, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, No. 1, Shuai Fu Yuan, Beijing, China
| | - Chen Zhao
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Liping Yang
- Department of Ophthalmology, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Peking University Third Hospital, Beijing, China
| | - Muna Bhende
- Shri Bhagwan Mahavir Vitreoretinal services, Medical Research Foundation, Sankara Nethralaya, Chennai, India
| | - Rajiv Raman
- Shri Bhagwan Mahavir Vitreoretinal services, Medical Research Foundation, Sankara Nethralaya, Chennai, India
| | - Parveen Sen
- Shri Bhagwan Mahavir Vitreoretinal services, Medical Research Foundation, Sankara Nethralaya, Chennai, India; Dr Agarwal Eye Hospital, Chandigarh, India
| | - Arkasubhra Ghosh
- GROW Lab, Narayana Nethralaya Foundation, Bangalore, Karnataka, India
| | - B Poornachandra
- Vitreo-Retina Services, Narayana Nethralaya, Bangalore, India
| | - Muhammad Bayu Sasongko
- Department of Ophthalmology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada - Sardjito Eye Center, Dr. Sardjito General Hospital, Yogyakarta, Indonesia
| | - Alia Arianti
- JEC Eye Hospitals and Clinics, Jakarta, Indonesia
| | - Valen Chia
- JEC Eye Hospitals and Clinics, Jakarta, Indonesia
| | | | | | - Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
| | - Hanako Ikeda
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Sang Jin Kim
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Safinaz Mohd Khialdin
- Department of Ophthalmology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia; UKM Specialist Children's Hospital, Kuala Lumpur, Malaysia
| | - Othmaliza Othman
- Department of Ophthalmology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia
| | - Mae-Lynn Catherine Bastion
- Department of Ophthalmology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia; Hospital Canselor Tuanku Muhriz, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia
| | - Ain Tengku Kamalden
- UM Eye Research Centre, Department of Ophthalmology, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Pooi Wah Penny Lott
- UM Eye Research Centre, Department of Ophthalmology, Universiti Malaya, Kuala Lumpur, Malaysia
| | | | | | - Amelia Lim
- Ophthalmology, Penang Gleneagles, Malaysia
| | - Raba Thapa
- Tilganga Institute of Ophthalmology, Kathmandu, Nepal
| | - Eli Pradhan
- Tilganga Institute of Ophthalmology, Kathmandu, Nepal
| | | | | | - B Manuel Benjamin Iv Ibañez
- Makati Medical Center, Makati City, Philippines; DOH Eye Center, East Avenue Medical Center, Quezon City, Philippines
| | - Adrian Koh
- Eye & Retina Surgeons, Camden Medical Centre, Singapore, Singapore
| | - Choi Mun M Chan
- Singapore National Eye Centre, Singapore Eye Research Institute, Singapore; Ophthalmology & Visual Sciences Academic Clinical Program (EYE ACP), Duke-NUS Medical School, Singapore
| | - Beau J Fenner
- Singapore National Eye Centre, Singapore Eye Research Institute, Singapore; Ophthalmology & Visual Sciences Academic Clinical Program (EYE ACP), Duke-NUS Medical School, Singapore
| | - Tien-En Tan
- Singapore National Eye Centre, Singapore Eye Research Institute, Singapore; Ophthalmology & Visual Sciences Academic Clinical Program (EYE ACP), Duke-NUS Medical School, Singapore
| | - Augustinus Laude
- National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Wei Kiong Ngo
- National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore
| | - Graham E Holder
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Ophthalmology, National University Hospital, National University Health System, Singapore
| | - Xinyi Su
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Ophthalmology, National University Hospital, National University Health System, Singapore
| | - Ta-Ching Chen
- Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan; Center of Frontier Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Nan-Kai Wang
- Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University, New York, NY, USA; Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan
| | - Eugene Yu-Chuan Kang
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chu-Hsuan Huang
- Department of Ophthalmology, Cathay General Hospital, Taipei, Taiwan
| | - Nuntachai Surawatsatien
- Center of Excellence in Retina, Department of Ophthalmology, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Phattrawan Pisuchpen
- Department of Ophthalmology and Division of Academic Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Tharikarn Sujirakul
- Department of Ophthalmology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | | | - Mandeep Singh
- Wilmer Eye Institute, Johns Hopkins Hospital, Baltimore, MD 21287, USA
| | - Bart Leroy
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium; Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - Michel Michaelides
- Moorfields Eye Hospital, London, United Kingdom and UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Ching-Yu Cheng
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Singapore National Eye Centre, Singapore Eye Research Institute, Singapore
| | - Li Jia Chen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Hwei Wuen Chan
- Centre for Innovation & Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Ophthalmology, National University Hospital, National University Health System, Singapore; Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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6
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Li H, Wei X, Wu S, Zhu T, Sun Z, Li H, Han X, Zou X, Yao F, Sui R. Clinical and genetic characterization of a large cohort of Chinese patients with Bietti crystalline retinopathy. Graefes Arch Clin Exp Ophthalmol 2024; 262:337-351. [PMID: 37584790 DOI: 10.1007/s00417-023-06178-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 08/17/2023] Open
Abstract
PURPOSE To investigate the clinical and genetic characteristics for a large cohort of Chinese patients with Bietti crystalline retinopathy (BCR). METHODS A total of 208 Chinese BCR patients from 175 families were recruited. Comprehensive clinical evaluations and genetic analysis were performed. Genotype-phenotype correlations were evaluated through statistical analysis. RESULTS The patients' median age was 37 years (range, 20-76 years). The median best corrected visual acuity (BCVA) was 0.8 LogMAR unit (range, 2.8 to -0.12). A significant decline of BCVA was revealed in patients over 40 years old (P<0.001). Two clinical types were observed: peripheral type (type P) and central type (type C). Significantly more type C patients had a worse central visual acuity, but a more preserved retinal function (P<0.05). Molecular screening detected biallelic CYP4V2 pathogenic variants in 98.3% (172/175) of the families, including 19 novel ones. The most frequent pathogenic variant was c.802-8_810del17insGC, with the allele frequency of 55.7% (195/350), followed by c.992A>C (28/350, 8%) and c.1091-2A>G (23/350, 6.6%). BCR patients with one c.802-8_810del17insGC and one truncating variant (IVS6-8/Tru) had BCVA>1.3 LogMAR unit (Snellen equivalent<20/400) at a younger age than those with homozygous c.802-8_810del17insGC variants (homo IVS6-8) (P=0.031). CONCLUSIONS BCR patients preserved relatively good vision before 40 years old. Two distinct clinical types of BCR were observed. BCR patients with IVS6-8/Tru had an earlier decline in visual acuity than those with homo IVS6-8. Our findings enhance the knowledge of BCR and will be helpful in patient selection for gene therapy.
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Affiliation(s)
- Huajin Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaoxu Han
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Fengxia Yao
- Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
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Wei X, Zhu T, Wang L, Sui R. Leber congenital amaurosis as the initial and essential manifestation in a Chinese patient with autoimmune polyglandular syndrome Type 1. Doc Ophthalmol 2023; 147:225-232. [PMID: 37715919 DOI: 10.1007/s10633-023-09953-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/28/2023] [Indexed: 09/18/2023]
Abstract
PURPOSE Autoimmune polyglandular syndrome Type 1 (APS-1) is a rare autosomal recessive disorder caused by defects in the autoimmune regulator (AIRE) gene. Patients are generally diagnosed at ages between five and fifteen years when they exhibit three or more manifestations, most typically mucocutaneous candidiasis, autoimmune Addison's disease, and hypoparathyroidism. Our study aims to report the first case of a Chinese APS-1 patient, presented with LCA as the initial and essential clinical feature of this rare syndrome. METHODS Detailed medical and family history were recorded for the patient. Also, the comprehensive ophthalmological examinations were conducted. Whole exome sequencing (WES) was applied to screen pathogenic variants. Sanger sequencing validation and segregation analysis were further performed for confirmation. RESULTS A 3-year-old boy with severely impaired vision and initially referred as LCA. However, with a detailed history review, oral candidiasis, dental enamel hypoplasia, and nail candida infection were revealed. Moreover, genetic analysis revealed the homozygous c.769C>T (p.R257X) in AIRE gene (NM_000383.3) as the causative variant. CONCLUSION We presented one case diagnosed with APS-1 based on clinical characteristics and genetic analysis. Our study demonstrated that LCA could serve as a warning sign for APS-1 and a potential trigger of early screening, which might prevent life-threatening complications.
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Affiliation(s)
- Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, No. 1, Shuai Fu Yuan, Beijing, 100730, China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, No. 1, Shuai Fu Yuan, Beijing, 100730, China
| | - Lei Wang
- Beijing Mei'ermu Hospital, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, No. 1, Shuai Fu Yuan, Beijing, 100730, China.
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8
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Fujinami-Yokokawa Y, Yang L, Joo K, Tsunoda K, Liu X, Kondo M, Ahn SJ, Li H, Park KH, Tachimori H, Miyata H, Woo SJ, Sui R, Fujinami K. Occult Macular Dysfunction Syndrome: Identification of Multiple Pathologies in a Clinical Spectrum of Macular Dysfunction with Normal Fundus in East Asian Patients: EAOMD Report No. 5. Genes (Basel) 2023; 14:1869. [PMID: 37895218 PMCID: PMC10606510 DOI: 10.3390/genes14101869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
Occult macular dystrophy (OMD) is the most prevalent form of macular dystrophy in East Asia. Beyond RP1L1, causative genes and mechanisms remain largely uncharacterised. This study aimed to delineate the clinical and genetic characteristics of OMD syndrome (OMDS). Patients clinically diagnosed with OMDS in Japan, South Korea, and China were enrolled. The inclusion criteria were as follows: (1) macular dysfunction and (2) normal fundus appearance. Comprehensive clinical evaluation and genetic assessment were performed to identify the disease-causing variants. Clinical parameters were compared among the genotype groups. Seventy-two patients with OMDS from fifty families were included. The causative genes were RP1L1 in forty-seven patients from thirty families (30/50, 60.0%), CRX in two patients from one family (1/50, 2.0%), GUCY2D in two patients from two families (2/50, 4.0%), and no genes were identified in twenty-one patients from seventeen families (17/50, 34.0%). Different severities were observed in terms of disease onset and the prognosis of visual acuity reduction. This multicentre large cohort study furthers our understanding of the phenotypic and genotypic spectra of patients with macular dystrophy and normal fundus. Evidently, OMDS encompasses multiple Mendelian retinal disorders, each representing unique pathologies that dictate their respective severity and prognostic patterns.
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Affiliation(s)
- Yu Fujinami-Yokokawa
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo 160-8582, Japan; (Y.F.-Y.)
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo 152-8902, Japan
- UCL Institute of Ophthalmology, London EC1V 9EL, UK
- Division of Public Health, Yokokawa Clinic, Suita 564-0083, Japan
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Kwangsic Joo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Republic of Korea
| | - Kazushige Tsunoda
- Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo 152-8902, Japan
| | - Xiao Liu
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo 152-8902, Japan
- Southwest Hospital, Army Medical University, Chongqing 400715, China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400715, China
| | - Mineo Kondo
- Department of Ophthalmology, Mie University Graduate School of Medicine, Mie 514-8507, Japan
| | - Seong Joon Ahn
- Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul 04763, Republic of Korea
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hisateru Tachimori
- Endowed Course for Health System Innovation, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Hiroaki Miyata
- Department of Health Policy and Management, Keio University School of Medicine, Tokyo 160-8582, Japan; (Y.F.-Y.)
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam 13620, Republic of Korea
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, China
| | - Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo 152-8902, Japan
- UCL Institute of Ophthalmology, London EC1V 9EL, UK
- Moorfields Eye Hospital, London EC1V 2PD, UK
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9
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Wei X, Li H, Zhu T, Li W, Li Y, Sui R. Deep Learning with Automatic Data Augmentation for Segmenting Schisis Cavities in the Optical Coherence Tomography Images of X-Linked Juvenile Retinoschisis Patients. Diagnostics (Basel) 2023; 13:3035. [PMID: 37835778 PMCID: PMC10572414 DOI: 10.3390/diagnostics13193035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/09/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
X-linked juvenile retinoschisis (XLRS) is an inherited disorder characterized by retinal schisis cavities, which can be observed in optical coherence tomography (OCT) images. Monitoring disease progression necessitates the accurate segmentation and quantification of these cavities; yet, current manual methods are time consuming and result in subjective interpretations, highlighting the need for automated and precise solutions. We employed five state-of-the-art deep learning models-U-Net, U-Net++, Attention U-Net, Residual U-Net, and TransUNet-for the task, leveraging a dataset of 1500 OCT images from 30 patients. To enhance the models' performance, we utilized data augmentation strategies that were optimized via deep reinforcement learning. The deep learning models achieved a human-equivalent accuracy level in the segmentation of schisis cavities, with U-Net++ surpassing others by attaining an accuracy of 0.9927 and a Dice coefficient of 0.8568. By utilizing reinforcement-learning-based automatic data augmentation, deep learning segmentation models demonstrate a robust and precise method for the automated segmentation of schisis cavities in OCT images. These findings are a promising step toward enhancing clinical evaluation and treatment planning for XLRS.
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Affiliation(s)
| | | | | | | | | | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, No. 1, Shuai Fu Yuan, Beijing 100730, China; (X.W.); (H.L.); (T.Z.); (W.L.); (Y.L.)
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10
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Wei X, Li H, Zhu T, Yao F, Sui R. FDXR-associated disease in a Chinese cohort: Unraveling expanded ocular phenotypes and genetic spectrum. Exp Eye Res 2023; 234:109600. [PMID: 37481223 DOI: 10.1016/j.exer.2023.109600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/06/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
FDXR: associated disease is characterized by optic atrophy, acoustic neuropathy, and developmental delays. This study evaluated the ocular phenotypes and genetic features of patients with biallelic FDXR variants. Five individuals from unrelated non-consanguineous Chinese families with biallelic FDXR variants were identified using whole exome sequencing, Sanger sequencing, and co-segregation validation. In addition to optic atrophy and diverse extraocular manifestations, all patients presented with retinal dystrophy, and electroretinogram showed severely impaired cone and rod functions in their first decades. Three of the five patients showed attenuated retinal vessels that appeared as white lines on the fundus, and fundus fluorescein angiography (FFA) further revealed vascular abnormalities including delayed filling, completely occluded retinal vasculature, and severe retinal vascular nonperfusion of the peripheral retina. Five novel FDXR variants were identified: c.383C > T (p.A128V), c.963delG (p.R322fs*7), c.1052_1053delTC (p.L351Pfs*12), c.394-11T > G and c.1002+1G > A. Retinal dystrophy with attenuated retinal vessels appearing as white lines was observed in this cohort, and the FFA images revealed that retinal vascular occlusion could be a distinct clinical characteristic of FDXR-associated disease. Probands with FDXR revealed severe early onset ophthalmic features with rapid-progression, indicating the importance of early diagnosis and treatment. Moreover, this is the first study to report FFA manifestations in an FDXR cohort, expanding the FDXR-associated ocular disease phenotype and genetic spectrum.
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Affiliation(s)
- Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Fengxia Yao
- Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.
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11
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Wen S, Wang M, Qian X, Li Y, Wang K, Choi J, Pennesi ME, Yang P, Marra M, Koenekoop RK, Lopez I, Matynia A, Gorin M, Sui R, Yao F, Goetz K, Porto FBO, Chen R. Systematic assessment of the contribution of structural variants to inherited retinal diseases. Hum Mol Genet 2023; 32:2005-2015. [PMID: 36811936 PMCID: PMC10244226 DOI: 10.1093/hmg/ddad032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/03/2023] [Accepted: 02/11/2023] [Indexed: 02/24/2023] Open
Abstract
Despite increasing success in determining genetic diagnosis for patients with inherited retinal diseases (IRDs), mutations in about 30% of the IRD cases remain unclear or unsettled after targeted gene panel or whole exome sequencing. In this study, we aimed to investigate the contributions of structural variants (SVs) to settling the molecular diagnosis of IRD with whole-genome sequencing (WGS). A cohort of 755 IRD patients whose pathogenic mutations remain undefined were subjected to WGS. Four SV calling algorithms including include MANTA, DELLY, LUMPY and CNVnator were used to detect SVs throughout the genome. All SVs identified by any one of these four algorithms were included for further analysis. AnnotSV was used to annotate these SVs. SVs that overlap with known IRD-associated genes were examined with sequencing coverage, junction reads and discordant read pairs. Polymerase Chain Reaction (PCR) followed by Sanger sequencing was used to further confirm the SVs and identify the breakpoints. Segregation of the candidate pathogenic alleles with the disease was performed when possible. A total of 16 candidate pathogenic SVs were identified in 16 families, including deletions and inversions, representing 2.1% of patients with previously unsolved IRDs. Autosomal dominant, autosomal recessive and X-linked inheritance of disease-causing SVs were observed in 12 different genes. Among these, SVs in CLN3, EYS and PRPF31 were found in multiple families. Our study suggests that the contribution of SVs detected by short-read WGS is about 0.25% of our IRD patient cohort and is significantly lower than that of single nucleotide changes and small insertions and deletions.
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Affiliation(s)
- Shu Wen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Meng Wang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xinye Qian
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yumei Li
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Keqing Wang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jongsu Choi
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mark E Pennesi
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Paul Yang
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Molly Marra
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA
| | - Robert K Koenekoop
- McGill Ocular Genetics Laboratory and Centre, Department of Paediatric Surgery, Human Genetics, and Ophthalmology, McGill University Health Centre, Montreal, Quebec, H4A 3S5, Canada
| | - Irma Lopez
- McGill Ocular Genetics Laboratory and Centre, Department of Paediatric Surgery, Human Genetics, and Ophthalmology, McGill University Health Centre, Montreal, Quebec, H4A 3S5, Canada
| | - Anna Matynia
- Jules Stein Eye Institute, Los Angeles, CA 90095, USA
- Ophthalmology, University of California Los Angeles David Geffen School of Medicine, Los Angeles, CA 90095, USA
| | - Michael Gorin
- Jules Stein Eye Institute, Los Angeles, CA 90095, USA
- Ophthalmology, University of California Los Angeles David Geffen School of Medicine, Los Angeles, CA 90095, USA
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005, China
| | - Fengxia Yao
- Medical Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100005, China
| | - Kerry Goetz
- Office of the Director, National Eye Institute/National Institutes of Health, Bethesda, MD 20892, USA
| | - Fernanda Belga Ottoni Porto
- INRET Clínica e Centro de Pesquisa, Belo Horizonte, Minas Gerais, 30150270, Brazil
- Department of Ophthalmology, Santa Casa de Misericórdia de Belo Horizonte, Belo Horizonte, Minas Gerais, 30150221, Brazil
- Centro Oftalmológico de Minas Gerais, Belo Horizonte, Minas Gerais, 30180070, Brazil
| | - Rui Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA
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12
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Zhu T, Li H, Wei X, Li W, Sun Z, Sui R. Novel homozygous variant in ARL2BP associated with retinitis pigmentosa, situs inversus, and male infertility in a Chinese patient. Clin Genet 2023; 103:472-477. [PMID: 36507858 DOI: 10.1111/cge.14278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022]
Abstract
ARL2BP is a ciliary gene associated with multiple ciliopathy phenotypes. On comprehensive clinical examinations using molecular methods, we identified a Chinese patient from a consanguineous family carrying a novel homozygous variant c.22_23delAG (p.S8Lfs*10) in ARL2BP, presenting with retinitis pigmentosa (RP), situs inversus totalis, and oligozoospermia. Situs inversus and male infertility have never been reported in the same patient with ARL2BP variants; therefore, this a novel ARL2BP-associated phenotypic triad of RP, situs inversus, and male infertility. Moreover, this patient likely had olfactory dysfunction susceptibility and presented with anosmia. We found reduced patient-derived fibroblast proliferation and ciliary length. Our findings expand the genotypic spectrum and reveal abnormal cell proliferation and ciliogenesis in ARL2BP-associated patients.
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Affiliation(s)
- Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wuyi Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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13
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Zhu T, Shen Y, Sun Z, Han X, Wei X, Li W, Lu C, Cheng T, Zou X, Li H, Cao Z, Gao H, Ma X, Luo M, Sui R. Clinical and Molecular Features of a Chinese Cohort With Syndromic and Nonsyndromic Retinal Dystrophies Related to the CEP290 Gene. Am J Ophthalmol 2023; 248:96-106. [PMID: 36493848 DOI: 10.1016/j.ajo.2022.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 11/08/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
PURPOSE To reveal the clinical and genetic features of 54 Chinese pedigrees with syndromic or nonsyndromic retinal dystrophies related to CEP290 and to explore the genotype-phenotype correlation. DESIGN Retrospective cohort study. METHODS Patients diagnosed with nonsyndromic inherited retinal dystrophy (IRD) or syndromic ciliopathy (SCP) were enrolled. We identified 61 patients from 54 families carrying biallelic pathogenic CEP290 variants using next-generation sequencing, Sanger sequencing, and co-segregation validation. Genotype-phenotype correlation was evaluated. RESULTS This study included 37 IRD patients from 32 families and 24 patients with SCP from 22 pedigrees. Four retinal dystrophy phenotypes were confirmed: Leber congenital amaurosis (LCA, 46/61), early-onset severe retinal dystrophy (EOSRD, 4/61), retinitis pigmentosa (RP, 10/61), and cone-rod dystrophy (CORD, 1/61). The SCP phenotypes included Joubert syndrome (JS) (23/24) and Bardet-Biedl syndrome (BBS) (1/24). We detected 73 different CEP290 variants, of which 33 (45.2%) were not previously reported. Two novel copy number variations (CNVs) and 1 novel pathogenic synonymous change were identified. The most recurrent alterations in the IRD and SCP were p.Q123* (6/64, 9.4%) and p.I556Ffs*17 (10/44, 22.7%), respectively. IRD patients carried more stop-gain alleles (25/64, 39.1%), whereas SCP patients carried more frameshift alleles (23/44, 52.3%). CONCLUSIONS LCA was the most common retinal dystrophy phenotype, and JS was the most prevalent syndrome in CEP290 patients; RP/CORD and BBS may be present in early adulthood. The hot spot variants and distribution of genotypes were distinct between IRD and SCP. Our study expands the CEP290 variant spectrum and enhances the current knowledge of CEP290 heterogeneity.
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Affiliation(s)
- Tian Zhu
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Yue Shen
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Zixi Sun
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Xiaoxu Han
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Xing Wei
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Wuyi Li
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Chao Lu
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Tingting Cheng
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Xuan Zou
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Hui Li
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.)
| | - Zongfu Cao
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Huafang Gao
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Xu Ma
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China
| | - Minna Luo
- and National Human Genetic Resources Center, National Research Institute for Family Planning (Y.S., C.L., T.C., Z.C., H.G., X.M., M.L.), Beijing, China.
| | - Ruifang Sui
- From the Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences (T.Z., Z.S., X.H., X.W., W.L., X.Z., H.L., R.S.).
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Wei X, Sui R. A Review of Machine Learning Algorithms for Retinal Cyst Segmentation on Optical Coherence Tomography. Sensors (Basel) 2023; 23:3144. [PMID: 36991857 PMCID: PMC10054815 DOI: 10.3390/s23063144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
Optical coherence tomography (OCT) is an emerging imaging technique for diagnosing ophthalmic diseases and the visual analysis of retinal structure changes, such as exudates, cysts, and fluid. In recent years, researchers have increasingly focused on applying machine learning algorithms, including classical machine learning and deep learning methods, to automate retinal cysts/fluid segmentation. These automated techniques can provide ophthalmologists with valuable tools for improved interpretation and quantification of retinal features, leading to more accurate diagnosis and informed treatment decisions for retinal diseases. This review summarized the state-of-the-art algorithms for the three essential steps of cyst/fluid segmentation: image denoising, layer segmentation, and cyst/fluid segmentation, while emphasizing the significance of machine learning techniques. Additionally, we provided a summary of the publicly available OCT datasets for cyst/fluid segmentation. Furthermore, the challenges, opportunities, and future directions of artificial intelligence (AI) in OCT cyst segmentation are discussed. This review is intended to summarize the key parameters for the development of a cyst/fluid segmentation system and the design of novel segmentation algorithms and has the potential to serve as a valuable resource for imaging researchers in the development of assessment systems related to ocular diseases exhibiting cyst/fluid in OCT imaging.
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15
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Wei X, Li H, Wu S, Zhu T, Sui R. Genetic analysis and clinical features of three Chinese patients with Oguchi disease. Doc Ophthalmol 2023; 146:17-32. [PMID: 36417138 DOI: 10.1007/s10633-022-09910-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 10/27/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Oguchi disease is a rare autosomal recessive form of congenital stationary night blindness caused by disease-causing variants in the rhodopsin kinase gene (GRK1) or the arrestin gene (SAG). Our study aims to describe the clinical features and identify the genetic defects for three Chinese patients with Oguchi disease. METHODS We conducted detailed ophthalmologic examinations for three patients from three unrelated non-consanguineous Chinese families. Targeted next-generation sequencing (targeted NGS) and copy number variations (CNVs) analysis were applied to screen pathogenic variants. Sanger sequencing validation, quantitative real-time PCR (qPCR), and segregation analysis were further performed for confirmation. Subsequently, a combined genetic and structural biology approach was used to infer the likely functional consequences of novel variants. RESULTS All three patients presented with typical clinical features of Oguchi disease, including night blindness, characteristic fundus appearance (Mizuo-Nakamura phenomenon), attenuated rod responses, and negative ERG waveforms. Their visual acuity and visual field were normal. Genetic analysis revealed two pathogenic variants in SAG and four pathogenic variants in GRK1. Patient 1 was identified to harbor compound heterozygous SAG variants c.874C > T (p.R292*) and exon2 deletion. Compound heterozygous GRK1 variants c.55C > T (p.R19*) and c.1412delC (p.P471Lfs*52) were found in patient 2. In patient 3, compound heterozygous GRK1 variants c.946C > A (p.R316S) and c.1388 T > C (p. L463P) were detected. CONCLUSIONS We reported the first two Chinese Oguchi patients with novel GRK1 pathogenic variants (P471Lfs*52, R316S, L463P) and one Oguchi case with SAG, indicating both GRK1 and SAG are important causative genes in Chinese Oguchi patients.
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Affiliation(s)
- Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, No. 1, Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Hui Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, No. 1, Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, No. 1, Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, No. 1, Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, No. 1, Shuai Fu Yuan, Beijing, 100730, People's Republic of China.
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16
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Wen S, Wang M, Qian X, Li Y, Wang K, Choi J, Pennesi ME, Yang P, Marra M, Koenekoop RK, Lopez I, Matynia A, Gorin M, Sui R, Yao F, Goetz K, Porto FBO, Chen R. Systematic assessment of the contribution of structural variants to inherited retinal diseases. bioRxiv 2023:2023.01.02.522522. [PMID: 36789417 PMCID: PMC9928032 DOI: 10.1101/2023.01.02.522522] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Despite increasing success in determining genetic diagnosis for patients with inherited retinal diseases (IRDs), mutations in about 30% of the IRD cases remain unclear or unsettled after targeted gene panel or whole exome sequencing. In this study, we aimed to investigate the contributions of structural variants (SVs) to settling the molecular diagnosis of IRD with whole-genome sequencing (WGS). A cohort of 755 IRD patients whose pathogenic mutations remain undefined was subjected to WGS. Four SV calling algorithms including include MANTA, DELLY, LUMPY, and CNVnator were used to detect SVs throughout the genome. All SVs identified by any one of these four algorithms were included for further analysis. AnnotSV was used to annotate these SVs. SVs that overlap with known IRD-associated genes were examined with sequencing coverage, junction reads, and discordant read pairs. PCR followed by Sanger sequencing was used to further confirm the SVs and identify the breakpoints. Segregation of the candidate pathogenic alleles with the disease was performed when possible. In total, sixteen candidate pathogenic SVs were identified in sixteen families, including deletions and inversions, representing 2.1% of patients with previously unsolved IRDs. Autosomal dominant, autosomal recessive, and X-linked inheritance of disease-causing SVs were observed in 12 different genes. Among these, SVs in CLN3, EYS, PRPF31 were found in multiple families. Our study suggests that the contribution of SVs detected by short-read WGS is about 0.25% of our IRD patient cohort and is significantly lower than that of single nucleotide changes and small insertions and deletions.
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Langouët M, Jolicoeur C, Javed A, Mattar P, Gearhart MD, Daiger SP, Bertelsen M, Tranebjærg L, Rendtorff ND, Grønskov K, Jespersgaard C, Chen R, Sun Z, Li H, Alirezaie N, Majewski J, Bardwell VJ, Sui R, Koenekoop RK, Cayouette M. Mutations in BCOR, a co-repressor of CRX/OTX2, are associated with early-onset retinal degeneration. Sci Adv 2022; 8:eabh2868. [PMID: 36070393 PMCID: PMC9451151 DOI: 10.1126/sciadv.abh2868] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/21/2022] [Indexed: 06/10/2023]
Abstract
Many transcription factors regulating the production, survival, and function of photoreceptor cells have been identified, but little is known about transcriptional co-regulators in retinal health and disease. Here, we show that BCL6 co-repressor (BCOR), a Polycomb repressive complex 1 factor mutated in various cancers, is involved in photoreceptor degenerative diseases. Using proteomics and transcription assays, we report that BCOR interacts with the transcription factors CRX and OTX2 and reduces their ability to activate the promoters of photoreceptor-specific genes. CUT&RUN sequencing further shows that BCOR shares genome-wide binding profiles with CRX/OTX2, consistent with a general co-repression activity. We also identify missense mutations in human BCOR in five families that have no evidence of cancer but present severe early-onset X-linked retinal degeneration. Last, we show that the human BCOR mutants cause degeneration when expressed in the mouse retina and have enhanced repressive activity on OTX2. These results uncover a role for BCOR in photoreceptors in both health and disease.
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Affiliation(s)
- Maéva Langouët
- Cellular Neurobiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, QC H2W 1R7, Canada
| | - Christine Jolicoeur
- Cellular Neurobiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, QC H2W 1R7, Canada
| | - Awais Javed
- Cellular Neurobiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, QC H2W 1R7, Canada
| | - Pierre Mattar
- Cellular Neurobiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, QC H2W 1R7, Canada
| | - Micah D. Gearhart
- Department of Genetics, Cell Biology and Development, Development Biology Center, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Stephen P. Daiger
- EHGED Department, Human Genetics Center, School of Public Health, University of Texas HSC, Houston, TX 77030, USA
| | - Mette Bertelsen
- Department of Clinical Genetics, Rigshospitalet, The Kennedy Centre, Copenhagen, Denmark
- Department of Ophthalmology, Rigshospitalet, The Kennedy Centre, Glostrup, Denmark
| | - Lisbeth Tranebjærg
- Department of Clinical Genetics, Rigshospitalet, The Kennedy Centre, Copenhagen, Denmark
- Institute of Clinical Medicine, University of Copenhagen, Denmark
| | - Nanna D. Rendtorff
- Department of Clinical Genetics, Rigshospitalet, The Kennedy Centre, Copenhagen, Denmark
| | - Karen Grønskov
- Department of Clinical Genetics, Rigshospitalet, The Kennedy Centre, Copenhagen, Denmark
| | - Catherine Jespersgaard
- Department of Clinical Genetics, Rigshospitalet, The Kennedy Centre, Copenhagen, Denmark
| | - Rui Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
| | - Hui Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
| | - Najmeh Alirezaie
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Vivian J. Bardwell
- Department of Genetics, Cell Biology and Development, Development Biology Center, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
| | - Robert K. Koenekoop
- Departments of Pediatric Surgery, Human Genetics, Adult Ophthalmology and the McGill Ocular Genetics Laboratory, McGill University Health Center Research Institute, Montreal, QC, Canada
| | - Michel Cayouette
- Cellular Neurobiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, QC H2W 1R7, Canada
- Department of Medicine, Université de Montréal, Montreal, QC, Canada
- Department of Anatomy and Cell Biology, Division of Experimental Medicine, McGill University, Montreal, QC, Canada
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Sun Z, Wu S, Zhu T, Wei X, Han X, Zou X, Sui R. Generation of a human induced pluripotent stem cell line PUMCHi019-A from a dominant optic atrophy patient with an OPA1 mutation. Stem Cell Res 2022; 60:102705. [DOI: 10.1016/j.scr.2022.102705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/03/2022] [Accepted: 02/06/2022] [Indexed: 11/26/2022] Open
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Han X, Wu S, Sun Z, Zhu T, Wei X, Zou X, Sui R. Generation of a human induced pluripotent stem cell line PUMCHi017-A from a Choroideremia patient with CHM mutation. Stem Cell Res 2022; 59:102661. [PMID: 35032821 DOI: 10.1016/j.scr.2022.102661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 11/27/2022] Open
Abstract
Choroideremia (CHM) is a rare monogenic, X-linked recessive inherited chorioretinal dystrophy caused by loss of function variants in the CHM gene. We successfully generated a novel human induced pluripotent stem cell (hiPSC) line from a CHM patient with CHM variant using the Sendai-virus based approach. These cells will provide a disease model for further studies on the disease pathogenesis and potential interventions.
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Affiliation(s)
- Xiaoxu Han
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuan Zou
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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20
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Zou X, Wu S, Zhu T, Sun Z, Wei X, Li W, Sui R. Generation of a human induced pluripotent stem cell line (PUMCHi018-A) from an early-onset severe retinal dystrophy patient with RDH12 mutations. Stem Cell Res 2022; 59:102655. [PMID: 35016144 DOI: 10.1016/j.scr.2022.102655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/29/2021] [Accepted: 01/01/2022] [Indexed: 11/26/2022] Open
Abstract
RDH12 mutations have been identified in patients diagnosed with severe early-onset retinal dystrophy, including Leber congenital amaurosis (LCA) and early-onset severe retinal dystrophy (EOSRD). Here, we describe the generation and characterization of a human induced pluripotent stem cell (hiPSC) line of a patient with RDH12 mutations. Blood sample was obtained, and peripheral blood mononuclear cells (PBMCs) were reprogrammed using the non-integrative Sendai virus to generate the iPSC line. The hiPSCs were characterized according to standard protocols including karyotyping, pluripotency marker expression and differentiation towards the three germ layers.
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Affiliation(s)
- Xuan Zou
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wuyi Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Li H, Li J, Huang Y, Sui R. Clinical and genetic study of a pseudo-dominant retinoschisis pedigree: the first female patient reported in Chinese population. Ophthalmic Genet 2022; 43:433-437. [PMID: 35189768 DOI: 10.1080/13816810.2022.2042702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND The inheritance pattern of genetically confirmed hereditary juvenile retinoschisis reported so far is X-linked recessive with limited number of female cases. We identified a female patient with retinoschisis, and this study reports the clinical features as well as the underlying genetic defect of this family. MATERIALS AND METHODS Detailed family history and pedigree analysis were performed. All affected subjects underwent detailed ophthalmic examinations, including best corrected visual acuity (BCVA), dilated fundoscopy, optical coherent tomography (OCT) and fundus autofluorescence (FAF). DNA sample of the proband was sequenced by next-generation sequencing (NGS). Sanger sequencing was performed for validation and segregation. RESULTS Three affected subjects including one female and two males were confirmed in this consanguineous family. The BCVA ranged from 20/50 to hand motion. Foveoschisis, hyperopia, subcapsular cataracts, vitreous opacity, retinal pigmentation, and macular atrophy were present in all three patients, with variable severity. Nystagmus, esotropia, and retinal vessels transposition were noted in the female patient. Retinal detachment occurred in the female patient and her affected brother. A small deletion in RS1 gene c.97delT (p.W33Gfs*93) (NM_000330.3) was found, which was co-segregated in the pedigree. CONCLUSIONS Consanguineous family having XLRS female patient could manifest as pseudo-dominant inheritance. Significant intrafamilial phenotypic variation was revealed.
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Affiliation(s)
- Huajin Li
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jing Li
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yanfeng Huang
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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22
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Wu S, Yuan Z, Sun Z, Zhu T, Wei X, Zou X, Sui R. A novel tandem duplication of PRDM13 in a Chinese family with North Carolina macular dystrophy. Graefes Arch Clin Exp Ophthalmol 2022; 260:645-653. [PMID: 34427740 DOI: 10.1007/s00417-021-05376-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/29/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022] Open
Abstract
PURPOSES North Carolina macular dystrophy (NCMD) is a rare autosomal dominant inherited disorder characterized by macular impairment with a variety of phenotypic manifestations. The aims of this study were to assess the clinical features of a Chinese family with NCMD and to identify the underlying genetic cause of the disease. METHODS Three patients from a Chinese family were included in this study. Detailed ophthalmological examinations were performed, including best corrected visual acuity (BCVA), slit lamp, dilated indirect ophthalmoscopy, fundus photography, optical coherence tomography (OCT), fundus autofluorescence, full-field electroretinography (ERG), and electrooculography (EOG). Genomic DNA was extracted from peripheral blood samples. Whole-genome sequencing and long-read genome sequencing were applied to detect the pathogenic variants. Sanger sequencing was performed to confirm the breakpoints. RESULTS All three patients had macular involvement ranging from patchy yellowish-white lesions to big-area thinning, which are typical for NCMD. The BCVA ranged from 20/50 to 20/20. OCT revealed varying degrees of macular structure disorganization. The ERG responses were normal, and the Arden ration of the EOG was reduced. A novel 134.6 kb (g.99932464-100067110dup) tandem duplication on chromosome 6 (NC_000006.11) encompassing the entire CCNC and PRDM13 genes and a DNase 1 hypersensitivity site in the MCDR1 locus was identified. CONCLUSION A novel large tandem duplication in MCDR1 locus was confirmed in a Chinese family with NCMD with a variety of macular phenotypes.
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Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Zhisheng Yuan
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xuan Zou
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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23
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Xie Z, Li H, Qi W, Li J, Wu C, Hu C, Jiang N, Wang Q, Tian X, Li M, Zhao J, Sui R, Zeng X. Characteristics and risk factors of retinal vasculopathy in antiphospholipid syndrome. Lupus 2022; 31:178-186. [PMID: 35042380 DOI: 10.1177/09612033211069762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Retinal vasculopathy including retinal artery occlusion (RAO) or retinal vein occlusion (RVO) was recently found to occur more frequently in antiphospholipid syndrome (APS) patients than non-APS patients. This study aims to investigate the clinical manifestation and risk factors of retinal vasculopathy among APS patients. METHODS In this single-center prospective cohort study, we evaluated APS patients with or without retinal vasculopathy during 2018-2020 at Peking Union Medical College Hospital. Clinical variables were compared, and a logistical regression model was built to explore risk factors. Hierarchical cluster analysis using Euclidean distances was applied to identify clusters of variables. RESULTS A total of 310 APS patients (67.4% female, mean age 38.1 years) were included, of whom 18 (5.8%) were diagnosed with retinal vasculopathy (9 with RVO and 9 with RAO). No significant differences were found among most demographic characteristics, clinical manifestations, or antibody profiles. APS-related heart valve disease (odds ratio OR 13.66, 95% confidence interval CI 4.55-40.98), APS nephropathy (OR 12.77, 95% CI 4.04-40.35), and thrombocytopenia (OR 2.63, 95% CI 1.01-6.89) were predictive of retinal vasculopathy. APS-related heart valve disease and nephropathy were also found to be statistically significant predictors in multivariate logistical regression analysis. Non-criteria manifestations were aggregated with retinal vasculopathy from a cluster analysis of variables. CONCLUSION Patients with APS-related heart valve disease and nephropathy suffered a higher risk of retinal vasculopathy. The underlying mechanisms of aPL-associated retinal vasculopathy may involve thrombotic microangiopathy, leading to poor prognosis and therapeutic changes.
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Affiliation(s)
- Zhijuan Xie
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hui Li
- State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,Department of Ophthalmology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Wanting Qi
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jing Li
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Chanyuan Wu
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Chaojun Hu
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Nan Jiang
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China.,Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Xinping Tian
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China.,Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Mengtao Li
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China.,Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Jiuliang Zhao
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China.,Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ruifang Sui
- State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,Department of Ophthalmology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaofeng Zeng
- Department of Rheumatology and Clinical Immunology, 34732Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.,State Key Laboratory of Complex Severe and Rare Diseases, 34732Peking Union Medical College Hospital, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology, Beijing, China.,Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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24
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Ahn SJ, Yang L, Tsunoda K, Kondo M, Fujinami-Yokokawa Y, Nakamura N, Iwata T, Kim MS, Mun Y, Park JY, Joo K, Park KH, Miyake Y, Sui R, Fujinami K, Woo SJ. Visual Field Characteristics in East Asian Patients With Occult Macular Dystrophy (Miyake Disease): EAOMD Report No. 3. Invest Ophthalmol Vis Sci 2022; 63:12. [PMID: 34994768 PMCID: PMC8762684 DOI: 10.1167/iovs.63.1.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Purpose The purpose of this study was to investigate the perimetric features and their associations with structural and functional features in patients with RP1L1-associated occult macular dystrophy (OMD; i.e. Miyake disease). Methods In this international, multicenter, retrospective cohort study, 76 eyes of 38 patients from an East Asian cohort of patients with RP1L1-associated OMD were recruited. Visual field tests were performed using standard automated perimetry, and the patients were classified into three perimetric groups based on the visual field findings: central scotoma, other scotoma (e.g. paracentral scotoma), and no scotoma. The association of the structural and functional findings with the perimetric findings was evaluated. Results Fifty-four eyes (71.1%) showed central scotoma, 14 (18.4%) had other scotomata, and 8 (10.5%) had no scotoma. Central scotoma was mostly noted in both eyes (96.3%) and within the central 10 degrees (90.7%). Among the three perimetric groups, there were significant differences in visual symptoms, best-corrected visual acuity (BCVA), and structural phenotypes (i.e. severity of photoreceptor changes). The central scotoma group showed worse BCVA often with severe structural abnormalities (96.3%) and a pathogenic variant of p.R45W (72.2%). The multifocal electroretinogram (mfERG) groups largely corresponded with the perimetric groups; however, 8 (10.5%) of 76 eyes showed mfERG abnormalities preceding typical central scotoma. Conclusions The patterns of scotoma with different clinical severity were first identified in occult macular dystrophy, and central scotoma, a severe pattern, was most frequently observed. These perimetric patterns were associated with the severity of BCVA, structural phenotypes, genotype, and objective functional characteristics which may precede in some cases.
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Affiliation(s)
- Seong Joon Ahn
- Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, South Korea
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China.,Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Kazushige Tsunoda
- Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Mineo Kondo
- Department of Ophthalmology, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yu Fujinami-Yokokawa
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan.,Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan.,Division of Public Health, Yokokawa Clinic, Suita, Japan.,UCL Institute of Ophthalmology, London, United Kingdom
| | - Natsuko Nakamura
- Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan.,Department of Ophthalmology, The University of Tokyo, Tokyo, Japan
| | - Takeshi Iwata
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Min Seok Kim
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Yongseok Mun
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Jun Young Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Kwangsic Joo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Yozo Miyake
- Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan.,Aichi Medical University, Nagakute, Aichi, Japan.,Next Vision, Kobe Eye Center, Kobe, Hyogo, Japan
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan.,UCL Institute of Ophthalmology, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
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25
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Wu S, Yuan Z, Sun Z, Yao F, Sui R. Leber congenital amaurosis as an initial manifestation in a Chinese patient with thiamine-responsive megaloblastic anemia syndrome. Am J Med Genet A 2021; 188:948-952. [PMID: 34821467 DOI: 10.1002/ajmg.a.62582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/25/2021] [Accepted: 11/09/2021] [Indexed: 01/19/2023]
Abstract
Thiamine-responsive megaloblastic anemia syndrome (TRMA) is an autosomal recessive disorder, inherited by the defective SLC19A2 gene that encodes a high-affinity thiamine transporter (THTR-1). TRMA is characterized by the occurrence of classical triad manifestations including megaloblastic anemia, diabetes mellitus, and sensorineural deafness. In addition to the systemic manifestations, ophthalmic features can be present and include retinitis pigmentosa, optic atrophy, cone-rod dystrophy, maculopathy, and Leber congenital amaurosis. Here we report a 6-year-old boy presenting severe early-onset retinal dystrophy with the initial diagnosis of Leber congenital amaurosis, which followed for 12 years. Diabetes mellitus occurred 3 years after vision problem. Eosinophilic granuloma of the left scapula was confirmed at 13 years old. Whole-exome sequencing was performed to identify two novel compound heterozygous variants c.725dupC (p.Ala243Serfs*3) and c.121G>A (p.Gly41Ser) in SLC19A2 gene (NM_006996.3). Oral thiamine supplementation treatment was initiated at 13 years. This case demonstrates Leber congenital amaurosis can present as the first clinical feature before systemic manifestations. Phenotypic variety should be aware and multidisciplinary teamwork and regular follow-up are important for TRMA patient care.
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Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhisheng Yuan
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fengxia Yao
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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26
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Wu S, Lam SM, Li H, Jiang B, Sun Z, Zhu T, Wei X, Zou X, Shui G, Sui R. Targeted lipidomics reveals plasmalogen phosphatidylethanolamines and storage triacylglycerols as the major systemic lipid aberrations in Bietti crystalline corneoretinal dystrophy. J Genet Genomics 2021; 49:380-383. [PMID: 34710622 DOI: 10.1016/j.jgg.2021.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 11/15/2022]
Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Huajin Li
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350004, China
| | - Binhua Jiang
- LipidALL Technologies Company Limited, Changzhou, Jiangsu 213022, China
| | - Zixi Sun
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Tian Zhu
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xing Wei
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xuan Zou
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ruifang Sui
- Department of Ophthalmology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
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27
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Luo M, Lin Z, Zhu T, Jin M, Meng D, He R, Cao Z, Shen Y, Lu C, Cai R, Zhao Y, Wang X, Li H, Wu S, Zou X, Luo G, Cao L, Huang M, Jiao H, Gao H, Sui R, Zhao C, Ma X, Cao M. Correction to: Disrupted intraflagellar transport due to IFT74 variants causes Joubert syndrome. Genet Med 2021; 23:1175. [PMID: 33972723 DOI: 10.1038/s41436-021-01191-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Minna Luo
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Zaisheng Lin
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Minjun Jin
- Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, China
| | - Dan Meng
- Tianjin Key Laboratory of Food and Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin, China
| | - Ruida He
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zongfu Cao
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Yue Shen
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Chao Lu
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Ruikun Cai
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Yong Zhao
- Child Rehabilitation Department, Nanhai Affiliated Maternity and Children's Hospital of Guangzhou University of TCM, Foshan, China
| | - Xueyan Wang
- Department of Prenatal Diagnosis, The Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Guanjun Luo
- Child Rehabilitation Department, Nanhai Affiliated Maternity and Children's Hospital of Guangzhou University of TCM, Foshan, China
| | - Li Cao
- Child Healthcare Department, The Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu, China
| | - Min Huang
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huike Jiao
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huafang Gao
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
| | - Chengtian Zhao
- Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, China.
| | - Xu Ma
- National Human Genetic Resources Center, National Research Institute for Family Planning, Beijing, China.
| | - Muqing Cao
- Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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28
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Zou X, Yao F, Li F, Wu S, Li H, Sun Z, Zhu T, Wei X, Li D, Sui R. Clinical characterization and the improved molecular diagnosis of autosomal dominant cone-rod dystrophy in patients with SCA7. Mol Vis 2021; 27:221-232. [PMID: 34012225 PMCID: PMC8116265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 05/05/2021] [Indexed: 10/31/2022] Open
Abstract
Purpose To evaluate the retinal phenotype and genetic features of Chinese patients with spinocerebellar ataxia type 7 (SCA7). Methods Detailed ophthalmic examinations, including electroretinograms, fundus photography, fundus autofluorescence and optical coherence tomography, were performed to analyse the retinal lesions of patients with SCA7. A molecular genetic analysis was completed to confirm the number of CAG repeats in ATXN7 gene on the patients and their family members. Results Eight patients from three families with SCA7 were included in this study. Trinucleotide repeat was expanded from 43 to 113 in the affected patients. The affected patients were characterized by different degrees of cone-rod dystrophy, which is positively related to the number of CAG repeats and age. All patients complained of progressive bilateral visual loss, and most cases reported visual disturbance earlier than gait movement or dysarthria. A coarse granular appearance of the macular region on scanning laser ophthalmoscopy, hypofluorescence in the macula on autofluorescence, retinal atrophy on optic coherence tomography, depression of multifocal electroretinograms and prominent abnormalities in cone-mediated responses on electrograms are the general features of SCA7-related retinopathy. Hyperreflective dots in the outer retinal layers and choroidal vessel layers are a common sign in optic coherence tomography in the advanced stage. Conclusions SCA7 shows a cone-rod dystrophy phenotype. The multimodal imaging of the retina is beneficial to detect the early lesions of cone-rod dystrophy related to SCA7.
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Affiliation(s)
- Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Fengxia Yao
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Fengrong Li
- Department of Ophthalmology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Donghui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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29
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Abstract
OBJECTIVE To detect the expression pattern of UCHL1 in glioma samples and its influence on the metastasis of glioma, as well as the underlying mechanism. PATIENTS AND METHODS UCHL1 levels in 42 paired glioma tissues and paracancerous ones were detected. The relationship between UCHL1 level and pathological indexes in glioma patients was analyzed. After establishing UCHL1 knockdown model in U251 and T98-G cells, their migratory ability was assessed by transwell and wound healing assay. At last, Luciferase assay, Western blot and rescue experiments were conducted to explore the role of UCHL1 in aggravating the development of glioma through targeting GAS2. RESULTS UCHL1 was upregulated in glioma samples than paracancerous ones. High level of UCHL1 indicated high rates of lymphatic metastasis and distant metastasis, as well as low rates of overall survival and progression-free survival in glioma. Knockdown of UCHL1 markedly inhibited migratory ability in glioma cells. GAS2 was the downstream gene of UCHL1. A positive correlation was found between expression levels of UCHL1 and GAS2 in glioma tissues. Overexpression of GAS2 could reverse the inhibitory effects of silenced UCHL1 on migratory ability in glioma cells. CONCLUSIONS UCHL1 level is linked to lymphatic metastasis, distant metastasis and prognosis in glioma patients. It stimulates migratory ability in glioma by positively regulating GAS2 level.
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Affiliation(s)
- R Sui
- Department of Neurosurgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China.
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30
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Sun Z, Yang L, Li H, Zou X, Wang L, Wu S, Zhu T, Wei X, Zhong Y, Sui R. Clinical and genetic analysis of the ABCA4 gene associated retinal dystrophy in a large Chinese cohort. Exp Eye Res 2020; 202:108389. [PMID: 33301772 DOI: 10.1016/j.exer.2020.108389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 12/31/2022]
Abstract
ABCA4 gene associated retinal dystrophies (ABCA4-RD) are a group of inherited eye diseases caused by ABCA4 gene mutations, including Stargardt disease, cone-rod dystrophy and retinitis pigmentosa. With the development of next-generation sequencing (NGS), numerous clinical and genetic studies on ABCA4-RD have been performed, and the genotype and phenotype spectra have been elucidated. However, most of the studies focused on the Caucasian population and limited studies of large Chinese ABCA4-RD cohorts were reported. In this study, we summarized the phenotypic and genotypic characteristics of 129 Chinese patients with ABCA4-RD. We found a mutation spectrum of Chinese patients which is considerably different from that of the Caucasian population and identified 35 novel ABCA4 mutations. We also reported some rare and special cases, such as, pedigrees with patients in two generations, patients diagnosed with cone-rod dystrophy or retinitis pigmentosa, patients with subretinal fibrosis and patients with preserved foveal structure. At the same time, we focused on the correlation between the genotypes and phenotypes. By the comprehensive analysis of multiple clinical examinations and the application of multiple regression analysis, we proved that patients with two "null" variants had a younger onset age and reached legal blindness earlier than patients with two "none-null" variants. Patients with one or more "none-null" variants tended to have better visual acuity and presented with milder fundus autofluorescence changes and more preserved rod functions on the full-field electroretinography than patients with two "null" variants. Furthermore, most patients with the p.(Phe2188Ser) variant shared a mild phenotype with a low fundus autofluorescence signal limited to the fovea and with normal full-field electroretinography responses. Our findings expand the variant spectrum of the ABCA4 gene and enhance the knowledge of Chinese patients with ABCA4-RD.
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Affiliation(s)
- Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China; Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization, Tokyo Medical Center, Tokyo, 152-8902, Japan; Department of Ophthalmology, Keio University School of Medicine, Tokyo, 160-8582, Japan
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Lei Wang
- Beijing Mei'ermu Hospital, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Yong Zhong
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.
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Wu S, Sun Z, Zhu T, Weleber RG, Yang P, Wei X, Pennesi ME, Sui R. Novel variants in PNPLA6 causing syndromic retinal dystrophy. Exp Eye Res 2020; 202:108327. [PMID: 33141049 DOI: 10.1016/j.exer.2020.108327] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 12/18/2022]
Abstract
PNPLA6-related disorders include several phenotypes, such as Boucher-Neuhäuser syndrome, Gordon Holmes syndrome, spastic paraplegia, photoreceptor degeneration, Oliver-McFarlane syndrome and Laurence-Moon syndrome. In this study, detailed clinical evaluations and genetic testing were performed in five (4 Chinese and 1 Caucasian/Chinese) syndromic retinal dystrophy patients. Genotype-phenotype correlations were analyzed based on review of the literatures of previously published PNPLA6-related cases. The mean age of patients and at first visit were 20.8 years (11, 12, 25, 28, 28) and 14.2 years (4, 7, 11, 24, 25), respectively. They all presented with severe chorioretinal dystrophy and profoundly decreased vision. The best corrected visual acuity (BCVA) ranged from 20/200 to 20/2000. Systemic manifestations included cerebellar ataxia, hypogonadotropic hypogonadism and hair anomalies. Six novel and three reported pathogenic variants in PNPLA6 (NM_001166111) were identified. The genotypes of the five cases are: c.3134C > T (p.Ser1045Leu) and c.3846+1G > A, c.3547C > T (p.Arg1183Trp) and c.1841+3A > G, c.3436G > A (p.Ala1146Thr) and c.2212-10A > G, c.3436G > A (p.Ala1146Thr) and c.2266C > T (p.Gln756*), c.1238_1239insC (p.Leu414Serfs*28) and c.3130A > G (p.Thr1044Ala). RT-PCR confirmed that the splicing variants indeed led to abnormal splicing. Missense variants p.Thr1044Ala, p.Ser1045Leu, p.Ala1146Thr, p.Arg1183Trp and c.3846+1G > A are located in Patatin-like phospholipase (Pat) domain. In conclusion, we report the phenotypes in five patients with PNPLA6 associated syndromic retinal dystrophy with variable systemic involvement and typical choroideremia-like fundus changes. Ocular manifestations may be the first and the only findings for years. All of our patients carried one severe deleterious variant (stop-gain or splicing variant) and one milder variant (missense variant). Retinal involvement was significantly correlated with severe deleterious variants and variants in Pat domain.
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Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Richard G Weleber
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
| | - Paul Yang
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Mark E Pennesi
- Casey Eye Institute, Oregon Health & Science University, Portland, OR, USA.
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
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Abstract
BACKGROUND The GUCY2D gene encodes the photoreceptor guanylate cyclase (GC-E) and different pathogenic variants can lead to Leber congenital amaurosis (LCA) or cone-rod dystrophy (CRD). In this study, we describe three unrelated families who carried different mutations at codon 838 of the GUCY2D gene, and presented different phenotypes of retinal degeneration. MATERIALS AND METHODS Family and personal histories were collected, and the patients underwent best corrected visual acuity (BCVA), fundus photography (FP), electroretinography (ERG), optical coherence tomography (OCT) and fundus autofluorescence (FAF). Venous blood was drawn from patients and family members, and genomic DNA was extracted. Next-generation sequencing of known ocular genes was applied to the proband to find pathogenic variants. Polymerase chain reaction (PCR) and Sanger sequencing were conducted for validation and segregation. RESULTS Six patients from three unrelated families were enrolled. All the patients manifested decreased vision, photophobia and myopia from childhood. ERG recordings demonstrated a significant reduction in cone responses for all patients, while rod responses ranged widely from normal to moderately reduced. All patients were diagnosed with CRD, but the disease severity and progression rates in the three families were significantly different. Three pathogenic variants in the GUCY2D gene (c.2512 C > T (p.R838C), c.2512 C > A (p.R838S) and c.2513 G > A (p.R838H)) were identified. CONCLUSIONS We presented the phenotypes of three Chinese adCRD families carrying different variants at codon 838 of the GUCY2D gene. The R838S variant is a novel genotype associated with GUCY2D-CRD. The R838H variant can cause severe retinal features. Our findings enhance the understanding of GUCY2D phenotypic diversity.
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Affiliation(s)
- Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Hong Du
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
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Zou X, Fang S, Wu S, Li H, Sun Z, Zhu T, Wei X, Sui R. Detailed comparison of phenotype between male patients carrying variants in exons 1-14 and ORF15 of RPGR. Exp Eye Res 2020; 198:108147. [PMID: 32702353 DOI: 10.1016/j.exer.2020.108147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/05/2020] [Accepted: 07/08/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE To compare disease severity in detail between patients carrying variants in exons 1-14 and ORF15 of retinitis pigmentosa GTPase regulator (RPGR). METHODS Systematic next-generation sequencing data analysis, Sanger sequencing validation and segregation analysis were utilised to identify the pathogenic variants. Detailed ophthalmic examinations, including electroretinograms, fundus photography, fundus autofluorescence and optical coherence tomography were performed. Statistical analysis, including age adjustment and comparison, were performed based on cross-sectional level to compare disease severity between variants in the two RPGR variant groups. RESULTS Sixty-two variants were identified in RPGR in 86 patients from 77 unrelated families. Twenty-nine (37.7%) had variants in RPGR-exons 1-14 (group 1) and 48 (62.3%) in RPGR-ORF15 (group 2). Eighty-four patients were diagnosed with X-linked retinitis pigmentosa and only two patients with cone-rod dystrophy. LogMAR visual acuity increased 0.035 and 0.022 each year on average in group 1 and group 2, respectively. Group 2 patients had better visual acuity with a mean logMAR difference of 0.4378, which is significant after age adjustment (P < 0.01). Neither the value of log (ellipsoid zone width) nor central retinal thickness was significantly correlated with variant grouping after considering the effect of the age variable (P = 0.56 and 0.40, respectively). Spherical refractive error did not differ significantly between the two variant groups (P = 0.17). Patterns of autofluorescence included a hyperfluorescent ring at the posterior pole, diffuse hyperfluorescence in the macular area, and dark macular autofluorescence with or without fovea hyperfluorescence. The age and proportion of fundus autofluorescence patterns between the two variant groups were significantly different (P < 0.01). CONCLUSIONS Patients with variants in exons 1-14 retained less visual acuity than patients with ORF15 variants and deteriorated faster. However, the ellipsoid zone widths, central retinal thickness and refractions were comparable between the two groups. Autofluorescence pattern relates to the age and the variant grouping.
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Affiliation(s)
- Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Sha Fang
- School of Statistics, Capital University of Economics and Business, Beijing, 100070, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.
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Zhu T, Chen DF, Wang L, Wu S, Wei X, Li H, Jin ZB, Sui R. USH2A variants in Chinese patients with Usher syndrome type II and
non-syndromic retinitis pigmentosa. Br J Ophthalmol 2020; 105:694-703. [DOI: 10.1136/bjophthalmol-2019-315786] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/01/2020] [Accepted: 06/02/2020] [Indexed: 12/13/2022]
Abstract
Aims
To reveal the Usher syndrome type IIA (USH2A)
gene variant profile in a large cohort of Chinese patients with non-syndromic
retinitis pigmentosa (RP) or Usher syndrome type II (USH2) and to explore the
genotype–phenotype correlation.
Methods
Targeted exome capture plus next-generation sequencing confirmed that 284
patients from 260 unrelated Chinese families carried
USH2A disease-associated variants. Both personal
medical history and family histories were reviewed. Ocular examinations were
performed and audiograms were recorded if hearing loss was suspected. The
genotype–phenotype correlation was evaluated by statistical analyses.
Results
A total of 230 variants in the USH2A gene were
identified, of which 90 (39.13%) were novel. The most common variants in the RP
and USH2 probands were p.Cys934Trp and p.Tyr2854_2894del, respectively, and
26.42% and 63.64% of the alleles in the RP and USH2 groups were truncating,
respectively. Patients harbouring biallelic truncating variants had a younger
age at the initial clinical visit and symptom onset than patients with missense
variants; furthermore, the patients with USH2 had a younger age at the initial
clinical visit and nyctalopia onset compared with the patients with RP
(p<0.001). For the patients with USH2, the age of nyctalopia onset was
positively correlated with that of hearing loss (p<0.05, r=0.219). In
addition, three pseudo-dominant pedigrees were identified carrying biallelic
USH2A variants.
Conclusions
This study enrolled the largest cohort of Chinese patients with
USH2A and identified the most prevalent
USH2A variants in USH2 and RP. We found that the
patients with USH2 had more truncating variants and experienced an earlier
decline in visual function. The findings enhance the current knowledge of
USH2A heterogeneity and provide valuable
information for future therapies.
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Abstract
BACKGROUND Wagner vitreoretinopathy (WVR) is a rare non-syndromic autosomal dominant inherited vitreoretinopathy. We studied the phenotypes of two Chinese families with WVR and identified the pathogenic variants. MATERIALS AND METHODS Four affected individuals were involved in this study. Three of them underwent detailed ophthalmic examinations, including best-corrected visual acuity (BCVA), dilated ophthalmoscopy, optical coherence tomography (OCT), visual field testing, and electroretinograms (ERG). The DNA sample of the proband was sequenced using our customized capture panel, which includes 338 retinal disease genes. Sanger sequencing was performed for validation and segregation. RESULTS Affected subjects manifested typical WVR features, including an optically empty vitreous with vitreoretinal membranes and veils, chorioretinal atrophy, and presenile cataracts. One patient was complicated with retinal detachment. BCVA ranged from light perception to 20/33. Reduced retinal thickness, loss, or discontinuation of ellipsoid and interdigitation zone were shown by OCT. Visual field testing displayed various degrees of peripheral vision loss. ERG recorded moderate to severe decline of both rod and cone responses. Next generation sequencing (NGS) combined with segregation test revealed two splice-site pathogenic variants (c.9265 + 2 T > A and c.4004-1 G > T) in VCAN gene. CONCLUSIONS Clinical manifestations are highly variable among WVR patients. Retinal detachment is common in WVR and the most vision-threatening complication. Next generation sequencing is a useful tool in precise diagnosis of this spectrum of diseases with highly heterogeneous or overlapped phenotypes.
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Affiliation(s)
- Huajin Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China.,Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University , Fuzhou, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing, China
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36
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Yu D, Zou J, Chen Q, Zhu T, Sui R, Yang J. Structural modeling, mutation analysis, and in vitro expression of usherin, a major protein in inherited retinal degeneration and hearing loss. Comput Struct Biotechnol J 2020; 18:1363-1382. [PMID: 32637036 PMCID: PMC7317166 DOI: 10.1016/j.csbj.2020.05.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/26/2020] [Accepted: 05/28/2020] [Indexed: 11/15/2022] Open
Abstract
Usherin is the most common causative protein associated with autosomal recessive retinitis pigmentosa (RP) and Usher syndrome (USH), which are characterized by retinal degeneration alone and in combination with hearing loss, respectively. Usherin is essential for photoreceptor survival and hair cell bundle integrity. However, the molecular mechanism underlying usherin function in normal and disease conditions is unclear. In this study, we investigated structural models of usherin domains and localization of usherin pathogenic small in-frame mutations, mainly homozygous missense mutations. We found that usherin fibronectin III (FN3) domains and most laminin-related domains have a β-sandwich structure. Some FN3 domains are predicted to interact with each other and with laminin-related domains. The usherin protein may bend at some FN3 linker regions. RP- and USH-associated small in-frame mutations are differentially located in usherin domains. Most of them are located at the periphery of β-sandwiches, with some at the interface between interacting domains. The usherin laminin epidermal growth factor repeats adopt a rod-shaped structure, which is maintained by disulfide bonds. Most missense mutations and deletion of exon 13 in this region disrupt the disulfide bonds and may affect local protein folding. Despite low expression of the recombinant entire protein and protein fragments in mammalian cell culture, usherin FN3 fragments are more robustly expressed and secreted than its laminin-related fragments. Our findings provide new insights into the usherin structure and the disease mechanisms caused by pathogenic small in-frame mutations, which will help inform future experimental research on diagnosis, disease mechanisms, and therapeutic approaches.
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Key Words
- Cell adhesion
- DCC, deleted in colorectal cancer
- FN3, fibronectin III
- GMQE, global quality estimation score
- HGMD, Human Gene Mutation Database
- Hair cell
- I-TASSER, Iterative Threading ASSEmbly Refinement
- LE, laminin EGF
- LG, laminin globular
- LGL, laminin globular-like
- LN, laminin N-terminal
- Membrane protein
- NCBI, National Center for Biotechnology Information
- Photoreceptor
- Protein folding
- QMEAN, qualitative model energy analysis score
- QSQE, Quaternary Structure Quality Estimation
- RMSD, root mean square deviation
- RP, retinitis pigmentosa
- Recombinant protein expression
- Retinitis pigmentosa
- SMTL, SWISS-MODEL template library
- Structural model
- TM-score, template modeling score
- USH, Usher syndrome
- Usher syndrome
- hFc, human Fc fragment
- mFc, mouse Fc fragment
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Affiliation(s)
- Dongmei Yu
- Department of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah, Salt Lake City, UT, United States
| | - Junhuang Zou
- Department of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah, Salt Lake City, UT, United States
| | - Qian Chen
- Department of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah, Salt Lake City, UT, United States
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Jun Yang
- Department of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah, Salt Lake City, UT, United States
- Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT, United States
- Division of Otolaryngology, Department of Surgery, University of Utah, Salt Lake City, UT, United States
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Qu B, Wu S, Jiao G, Zou X, Li Z, Guo L, Sun X, Huang C, Sun Z, Zhang Y, Li H, Zhou Q, Sui R, Li W. Treating Bietti crystalline dystrophy in a high-fat diet-exacerbated murine model using gene therapy. Gene Ther 2020; 27:370-382. [PMID: 32483213 DOI: 10.1038/s41434-020-0159-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/12/2020] [Accepted: 05/19/2020] [Indexed: 11/09/2022]
Abstract
Lipid metabolic deficiencies are associated with many genetic disorders. Bietti crystalline dystrophy (BCD), a blindness-causing inherited disorder with changed lipid profiles, is more common in Chinese and Japanese than other populations. Our results reveal that mouse models lacking Cyp4v3 have less physiological and functional changes than those of BCD patients with this gene defect. After the administration of a high-fat diet (HFD), the occurrence of retinal lesions were both accelerated and aggregated in the Cyp4v3-/- mouse models, implying that changed lipid levels were not only associated factors but also risk factors to BCD patients. Facilitated by the results, we found that the reduced electroretinography waveforms and retinal thickness observed in the HFD-induced mouse models were effectively recovered after subretinal delivery of a human CYP4V2 gene carried by an adeno-associated virus vector, which demonstrates the potential curability of BCD by gene therapy.
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Affiliation(s)
- Bin Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Guanyi Jiao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Zhikun Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Lu Guo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xuehan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cheng Huang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China. .,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
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Han X, Wu S, Wang M, Li H, Huang Y, Sui R. Genetic and clinical characterization of mainland Chinese patients with sialidosis type 1. Mol Genet Genomic Med 2020; 8:e1316. [PMID: 32453490 PMCID: PMC7434748 DOI: 10.1002/mgg3.1316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 12/26/2022] Open
Abstract
Background Sialidosis type 1 is a rare inherited disorder with a high disability. No genetically confirmed mainland Chinese patient with sialidosis type 1 has been reported. This study evaluated the phenotypes and genotypes of mainland Chinese patients with sialidosis type 1. Methods It was a retrospective case series study. Four unrelated patients were enrolled. Comprehensive clinical evaluations and molecular genetic analysis of the NEU1 gene were performed. Results Three out of four patients presented progressive myoclonus epilepsy. The best‐corrected visual acuity ranged from 20/2000 to 20/25. Punctate cataracts were found in all of the patients. Distinct macular cherry red spots were observed in three patients by fundoscopy, and a relatively normal fundus was revealed in one patient. Optical coherence tomography (OCT) showed increased reflectivity of the nerve fiber and ganglion cell layers, and fundus autofluorescence (FAF) revealed hyperautofluorescent areas surrounding the fovea in all of the patients. Only superficial retinal vessels can be observed using OCT angiography; the deeper capillary plexus could not be observed. Visual evoked potential revealed varying degrees of decreased amplitude and/or prolonged latency of P100 or P2 waves. The most frequent sequence variant identified was c.544A>G (p.S182G) (NM_000434.3). Conclusions Our study first described the ophthalmic and neurologic characteristics of a small cohort of unrelated mainland Chinese patients with sialidosis type 1. We found that c.544A>G (p. S182G) might be a hotspot variant in Chinese patients. The accumulation of metabolic products in the nerve fiber and ganglion cell layers is a characteristic ocular finding that could be sensitively detected by OCT and FAF imaging.
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Affiliation(s)
- Xiaoxu Han
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Min Wang
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University, Shanghai, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yan Huang
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.,Key Laboratory of Ocular Fundus Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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39
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Wu S, Zou X, Sun Z, Zhu T, Wei X, Sui R. Unilateral retinocytoma associated with a variant in the RB1 gene. Mol Genet Genomic Med 2020; 8:e1156. [PMID: 31997559 PMCID: PMC7196460 DOI: 10.1002/mgg3.1156] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 11/21/2022] Open
Abstract
Background Retinocytoma is a rare benign retinal tumor associated with variants in the RB1 gene. Ophthalmoscopic features can include a translucent retinal mass, calcification, retinal pigment epithelial alteration and chorioretinal atrophy. Methods Detailed ophthalmological examinations were performed in a Chinese patient with retinocytoma and his daughter with bilateral retinoblastoma. Sanger sequencing was performed to detect RB1 genetic variants in the patient, his daughter and tumor tissue from his daughter. Results A 33‐year‐old man presented with poor vision and strabismus in the right eye since childhood. Fundus examination revealed a round yellow‐white lesion stretching from the nasal side of the optic disc to the temporal periphery of the right eye. Sequencing result identified a reported variant (c.658C>G, p.Leu220Val) in the RB1 gene (NM_000321.2) of DNA extracted from peripheral blood of the patient and his daughter. The missense variant was also found in the tumor tissue from his daughter. Conclusions We report detailed clinical features and genetic analysis of a case with unilateral retinocytoma. Retinocytoma has a wide range of clinical phenotypes; genetic testing is therefore a useful tool for the diagnosis of atypical cases.
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Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xing Wei
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Zhang Y, Hong Q, Cao C, Yang L, Li Y, Hai T, Zhang H, Zhou Q, Sui R, Zhao J. A novel porcine model reproduces human oculocutaneous albinism type II. Cell Discov 2019; 5:48. [PMID: 31636960 PMCID: PMC6796836 DOI: 10.1038/s41421-019-0117-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 07/25/2019] [Indexed: 01/06/2023] Open
Affiliation(s)
- Ying Zhang
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Qianlong Hong
- 3School of Life Sciences, Anhui University, 230601 Hefei, China
| | - Chunwei Cao
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Lizhu Yang
- 4Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 100730 Beijing, China
| | - Yongshun Li
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Tang Hai
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Hongyong Zhang
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Qi Zhou
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Ruifang Sui
- 4Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, 100730 Beijing, China
| | - Jianguo Zhao
- 1State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China.,2University of Chinese Academy of Sciences, 100049 Beijing, China
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Qu B, Zhao AH, Nie XZ, Sui R, Du MM, Jiang L, Wang HL. Up-regulation of long non-coding RNA MFI2 functions as an oncogenic role in cervical cancer progression. Eur Rev Med Pharmacol Sci 2019; 23:4680-4687. [PMID: 31210294 DOI: 10.26355/eurrev_201906_18049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Cervical cancer is one of the gynecologic tumors in the world. The main aim of this study was to elucidate the functional role of MFI2 in cervical cancer and provide novel insight into biomarkers and therapeutic strategies for cervical cancer. PATIENTS AND METHODS The relative expression level of MFI2 was examined by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Cell counting kit-8 (CCK-8) assay was involved to determine the ability of cell proliferation. Flow cytometric analysis was performed to detect cell apoptosis. Transwell assay and Matrigel assay were involved to determine cell migration and invasion. Expressions of protein kinase B (AKT), phosphorylated-AKT (p-AKT), B-cell lymphoma-2 (BCL2), and BCL2-Associated X (Bax) protein levels were detected in Western blotting. Transfected cells were used to perform tumor xenograft formation assay. RESULTS Our research validated that MFI2 was up-regulated in cervical cancer by qRT-PCR. Through CCK-8 assay, flow cytometric analysis, transwell assay, and Matrigel assay, we verified that MFI2 can promote cell proliferation, cell metastasis and inhibit cell apoptosis in cervical cancer. Subsequently, we used Western blotting assay to determine the alteration of protein expression of p-AKT, BCL2, and Bax. The results indicated that MFI2 may exert its function by regulating phosphatidylinositol 3-kinase (PI3K)/AKT signaling pathway. In tumor xenograft formation assay, up-regulated MFI2 accelerated tumor formation. CONCLUSIONS Current research elucidated that MFI2 promoted cell proliferation, cell metastasis and inhibited cell apoptosis in cervical cancer by regulating the PI3K/AKT signaling pathway. Our results may provide a novel insight into finding new therapeutic targets and biomarkers for cervical cancer.
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Affiliation(s)
- B Qu
- Department of Obstetrics and Gynecology, Gansu Provincial Hospital, Lanzhou, China.
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Pan H, Wu S, Wang J, Zhu T, Li T, Wan B, Liu B, Luo Y, Ma X, Sui R, Wang B. TNFRSF21 mutations cause high myopia. J Med Genet 2019; 56:671-677. [DOI: 10.1136/jmedgenet-2018-105684] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 03/27/2019] [Accepted: 04/25/2019] [Indexed: 11/04/2022]
Abstract
BackgroundHigh myopia (HM) is one of the leading causes of vision impairment worldwide, accompanied by a series of pathological ocular complications. Studies have shown that genetic factors play an important role in the pathogenesis of HM. The aim of our study is to identify a candidate gene for a large family with non-syndromic HM.MethodsA large Chinese family, including 12 patients with non-syndromic HM, and 220 unrelated patients with HM, were recruited from the Department of Ophthalmology, Peking Union Medical College Hospital. Three affected subjects from the large family were selected to perform whole exome sequencing (WES). Rare heterozygous variants shared by all three subjects were retained and then Sanger sequencing was used to determine whether any of the remaining variants cosegregated with the disease phenotype. Furthermore, all coding regions of the candidate genes were analysed in 220 unrelated patients with HM. Immunofluorescence assay was used to detect the expression of the candidate gene in the eye. Annexin V/PI staining and flow cytometry were applied to detect cell apoptotic changes.ResultsWES identified a novel TNF receptor superfamily member 21 (TNFRSF21) variant, P146A, in a large Chinese family with HM, and another three rare heterozygous variants (P202L, E240* and A440G) in TNFRSF21 were found in 220 unrelated cases with HM. Immunofluorescence assay indicated that it is strongly expressed in the mouse eye. Compared with the wild type, the P146A variant could significantly increase adult retinal pigment epithelial cell line-19 cell apoptotic levels.ConclusionsVariants in TNFRSF21 cause non-syndromic HM in Chinese population.
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Fujinami K, Yang L, Joo K, Tsunoda K, Kameya S, Hanazono G, Fujinami-Yokokawa Y, Arno G, Kondo M, Nakamura N, Kurihara T, Tsubota K, Zou X, Li H, Park KH, Iwata T, Miyake Y, Woo SJ, Sui R. Clinical and Genetic Characteristics of East Asian Patients with Occult Macular Dystrophy (Miyake Disease): East Asia Occult Macular Dystrophy Studies Report Number 1. Ophthalmology 2019; 126:1432-1444. [PMID: 31028767 DOI: 10.1016/j.ophtha.2019.04.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/10/2019] [Accepted: 04/16/2019] [Indexed: 10/27/2022] Open
Abstract
PURPOSE To describe the clinical and genetic characteristics of the cohort enrolled in the East Asian studies of occult macular dystrophy (OMD). DESIGN International, multicenter, retrospective cohort studies. PARTICIPANTS A total of 36 participants from 21 families with a clinical diagnosis of OMD and harboring pathogenic RP1L1 variants (i.e., Miyake disease) were enrolled from 3 centers in Japan, China, and South Korea. METHODS A detailed history was obtained, and comprehensive ophthalmological examinations including spectral-domain OCT were performed. All detected sequence variants in the RP1L1 gene were reviewed, and in silico analysis was performed, including allele frequency analyses and pathogenicity predictions. MAIN OUTCOME MEASURES Onset of disease, visual acuity (VA) converted to the logarithm of the minimum angle of resolution (logMAR), OCT findings, and effect of detected variants. RESULTS Eleven families from Japan, 6 from South Korea, and 4 from China were recruited. There were 12 female and 24 male participants. The median age of onset was 25.5 years (range, 2-73), and the median age at the latest examination was 46.0 years (range, 11-86). The median VA (logMAR) was 0.65 (range, -0.08-1.22) in the right eye and 0.65 (-0.08-1.10) in the left eye. A significant correlation between onset of disease and VA was revealed. The Classical morphologic phenotype showing both blurred ellipsoid zone and absence of interdigitation zone of the photoreceptors was demonstrated in 30 patients (83.3%), and subtle photoreceptor architectural changes were demonstrated in 6 patients (16.6%). Eight pathogenic RP1L1 variants were identified, including 6 reported variants and 1 novel variant: p.R45W, p.T1194M/p.T1196I (complex), p.S1199C, p.G1200A, p.G1200D, p.V1201G, and p.S1198F, respectively. Two variants were recurrent: p.R45W (11 families, 52.4%) and p.S1199C (5 families, 23.8%). The pathogenic missense variants in 10 families (47.6%) were located within the previously reported unique motif, including 6 amino acids (1196-1201). CONCLUSIONS There is a large spectrum of clinical findings in Miyake disease, including various onset of disease and VA, whereas the characteristic photoreceptor microstructures were shared in most cases. Two hot spots including amino acid numbers 45 and 1196-1201 in the RP1L1 gene were confirmed in the East Asian population.
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Affiliation(s)
- Kaoru Fujinami
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; UCL Institute of Ophthalmology, London, United Kingdom; Moorfields Eye Hospital, London, United Kingdom.
| | - Lizhu Yang
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Kwangsic Joo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Kazushige Tsunoda
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Shuhei Kameya
- Department of Ophthalmology, Nippon Medical School Chiba Hokusoh Hospital, Inzai, Chiba, Japan
| | - Gen Hanazono
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Yu Fujinami-Yokokawa
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; Graduate School of Health Management, Keio University, Tokyo, Japan
| | - Gavin Arno
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; UCL Institute of Ophthalmology, London, United Kingdom; Moorfields Eye Hospital, London, United Kingdom
| | - Mineo Kondo
- Department of Ophthalmology, Graduate School of Medicine, Mie University, Mie, Japan
| | - Natsuko Nakamura
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; Department of Ophthalmology, The University of Tokyo, Tokyo, Japan
| | - Toshihide Kurihara
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Xuan Zou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Takeshi Iwata
- Division of Molecular and Cellular Biology, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Yozo Miyake
- Laboratory of Visual Physiology, Division of Vision Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan; Aichi Medical University, Nagakute, Aichi, Japan
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.
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Affiliation(s)
- Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Linqing Zhong
- Department of Pediatrics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Tian Zhu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hongmei Song
- Department of Pediatrics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Ling C, Sui R, Yao F, Wu Z, Zhang X, Zhang S. Whole exome sequencing identified a novel truncation mutation in the NHS gene associated with Nance-Horan syndrome. BMC Med Genet 2019; 20:14. [PMID: 30642278 PMCID: PMC6332535 DOI: 10.1186/s12881-018-0725-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 11/21/2018] [Indexed: 11/10/2022]
Abstract
Background Nance-Horan syndrome (NHS) is an X-linked inheritance disorder characterized by bilateral congenital cataracts, and facial and dental dysmorphism. This disorder is caused by mutations in the NHS gene. However, NHS may be difficult to detect in individuals with subtle facial dysmorphism and dental abnormalities in whom congenital cataracts are the primary clinical manifestations. Methods In this study, we present a three-generation family with NHS. Whole exome sequencing was performed to determine the potential pathogenic variant in the proband. Further validation was explored with Sanger sequencing in 9 of the available individuals of the family and additional 200 controls. Results A novel truncation mutation in gene NHS (c.C4449G, p.Tyr1483Ter) was found in the proband, who presented with a long-narrow face, prominent nose and large anteverted pinnae ear, screw-driver like incisors, mild mulberry like molars, one missing maxillary second molar and malocclusion. We found this mutation was detected in 2 male patients and 4 female carriers in the family. However, the mutation was never detected in the control subjects. Conclusions In conclusion, we identified a novel truncation mutation in the NHS gene, which might associate with NHS. Our review on the NHS studies illustrated that NHS has significantly clinical heterogeneity. And NHS mutations in the NHS-affected individuals typically result in premature truncation of the protein. And the new mutation revealed in this study would highlight the understanding of the causative mutations of NHS. Electronic supplementary material The online version of this article (10.1186/s12881-018-0725-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chao Ling
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Fengxia Yao
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Zhihong Wu
- Central Research Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xue Zhang
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China. .,McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, 100005, China.
| | - Shuyang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
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Zhang L, Sun Z, Zhao P, Huang L, Xu M, Yang Y, Chen X, Lu F, Zhang X, Wang H, Zhang S, Liu W, Jiang Z, Ma S, Chen R, Zhao C, Yang Z, Sui R, Zhu X. Whole-exome sequencing revealed HKDC1 as a candidate gene associated with autosomal-recessive retinitis pigmentosa. Hum Mol Genet 2018; 27:4157-4168. [PMID: 30085091 PMCID: PMC6240732 DOI: 10.1093/hmg/ddy281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/02/2018] [Accepted: 07/23/2018] [Indexed: 01/04/2023] Open
Abstract
Retinitis pigmentosa (RP) is an inheritable retina degenerative disease leading to blindness. Despite the identification of 70 genes associated with RP, the genetic cause of ∼40% of RP patients remains to be elucidated. Whole-exome sequencing was applied on the probands of a RP cohort of 68 unsolved cases to identify candidate genetic mutations. A homozygous missense variant (c.173C > T, p.T58 M) was found in HKDC1 in two unrelated families presenting late-onset retinal degeneration. This variant affects highly conserved amino acid residue and is very rare in several databases and absent in 4000 ethnic-matched controls. Mutant HKDC1 protein partially lost hexokinase activity. Hkdc1 is expressed in the mouse retina and localized to photoreceptor inner segments. To elucidate the in vivo roles of Hkdc1 in the retina, we generated Hkdc1 knockout (KO) mouse models using CRISPR/Cas9 technique. Two independent alleles were identified and backcrossed to C57BL/6 J for 6 generations. Absence of HKDC1 expression in the Hkdc1 KO retina was confirmed by western blot and immunostaning using HKDC1 antibody. Hkdc1 KO mice exhibited reduced scotopic electroretinogram response and thinner outer nuclear layer, similar to some of the human patient phenotypes. Loss of Hkdc1 led to mislocalization of rhodopsin to the inner segments and cell bodies of rods in some regions in the retina. Taken together, our data demonstrated that HKDC1 is associated with autosomal recessively inherited RP.
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Affiliation(s)
- Lin Zhang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Center of Information in Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Peiquan Zhao
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lulin Huang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Mingchu Xu
- Department of Molecular and Human Genetics
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Yeming Yang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Xue Chen
- Department of Ophthalmology, Hospital of Nanjing Medical University, State Key Laboratory of Reproductive Medicine, Nanjing, China
| | - Fang Lu
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Xiang Zhang
- Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hui Wang
- Institute of Life Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Shanshan Zhang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Wenjing Liu
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Zhilin Jiang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Institute of Laboratory Medicine, SichuanAcademy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, China
| | - Shi Ma
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Institute of Laboratory Medicine, SichuanAcademy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, China
| | - Rui Chen
- Department of Molecular and Human Genetics
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - Chen Zhao
- Department of Ophthalmology, Hospital of Nanjing Medical University, State Key Laboratory of Reproductive Medicine, Nanjing, China
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Ophthalmology, Children’s Hospital of Zhengzhou, Zhengzhou, China
| | - Zhenglin Yang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Institute of Laboratory Medicine, SichuanAcademy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, China
- Chinese Academy of Sciences Sichuan Translational Medicine Hospital, Institute of Chengdu Biology Chengdu, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xianjun Zhu
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People’s Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
- Institute of Laboratory Animal Sciences, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
- Institute of Laboratory Medicine, SichuanAcademy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, China
- Chinese Academy of Sciences Sichuan Translational Medicine Hospital, Institute of Chengdu Biology Chengdu, China
- Center of Information in Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
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Li H, Jones EM, Li H, Yang L, Sun Z, Yuan Z, Chen R, Dong F, Sui R. Clinical and genetic features of eight Chinese autosomal-dominant optic atrophy pedigrees with six novel OPA1 pathogenic variants. Ophthalmic Genet 2018; 39:569-576. [PMID: 29952689 DOI: 10.1080/13816810.2018.1466337] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Autosomal-dominant optic atrophy (ADOA) is one of the most common types of inherited optic atrophy. We identify OPA1 pathogenic variants and assess the clinical features of a cohort of Chinese ADOA patients Materials and Methods: Detailed clinical evaluations were performed and genomic DNA was extracted from peripheral blood for all the participants. Sanger sequencing was used to analyze all exons and exon/intron junctions of OPA1 for eight pedigrees. Target exome capture plus next-generation sequencing (NGS) were applied for one atypical family with photophobia. Reverse transcription polymerase chain reaction was carried out to further characterize the mRNA change of selected splicing alteration. RESULTS All 17 patients had impaired vision and optic-disk pallor; however, the clinical severity varied markedly. Two patients complicated with hearing loss. Six novel and two reported pathogenic variants in OPA1 (GenBank Accession No. NM_130837.2) were identified including four nonsynonymous variants (c.2400T > G, c.1468T > C, c.1567A > G and c.1466T > C), two splicing variants (c.2984-1_2986delGAGA and c.2983 + 5G > A), one small deletion (c.2960_2968delGCGTTCAAC), and one small insertion (c.3009_3010insA). RNA analysis revealed the splicing variant c.2984-1_2986delGAGA caused small deletion of mRNA (r.2983_2988del). CONCLUSIONS ADOA patients presented variable clinical manifestations. Novel OPA1 pathogenic variants are the main genetic defect for Chinese ADOA cases. NGS may be a useful molecular testing tool for atypical ADOA.
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Affiliation(s)
- Huajin Li
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Evan M Jones
- b Department of Molecular and Human Genetics , Baylor College of Medicine , Houston , TX , USA
| | - Hui Li
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Lizhu Yang
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Zixi Sun
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Zhisheng Yuan
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Rui Chen
- b Department of Molecular and Human Genetics , Baylor College of Medicine , Houston , TX , USA
| | - Fangtian Dong
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
| | - Ruifang Sui
- a Department of Ophthalmology , Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences , Beijing , China
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Sun Z, Zhou Q, Li H, Yang L, Wu S, Sui R. Mutations in crystallin genes result in congenital cataract associated with other ocular abnormalities. Mol Vis 2017; 23:977-986. [PMID: 29386872 PMCID: PMC5757854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 12/22/2017] [Indexed: 11/03/2022] Open
Abstract
Purpose This study aims to describe the phenotypes and identify pathogenic mutations in Chinese patients who have congenital cataracts associated with other ocular abnormalities. Methods Eleven patients from four unrelated Chinese families plus two simplex cases were enrolled in this study. Detailed ophthalmic examinations were performed. DNA samples were isolated from peripheral blood collected from the patients. Next-generation sequencing of known ocular genes was applied to the proband of each family and two simplex cases to find pathogenic variances. PCR and Sanger sequencing were conducted for validation and segregation tests. Results All 13 patients had congenital cataracts, and other ocular abnormalities were found in some cases. Microcornea was found in 12 subjects, and ocular coloboma was observed in five. Various types of coloboma, including iris, choroid, macular, and optic disc, were described. Five mutations in crystallin genes were identified. Four of the mutations are novel: CRYBB1: p.(Arg230Cys), CRYBB2: p.(Gly149Val), CRYGC: p.(Met44CysfsTer59), and CRYGC: p.(Tyr144Ter). One mutation was reported previously: CRYAA: p.(Arg21Trp). Conclusions We examined a cohort of Chinese patients with congenital cataracts and studied the phenotypes and genotypes. Extralenticular abnormalities, such as microcornea and ocular coloboma, can also be found in patients with congenital cataracts. The phenotype of congenital cataracts associated with macular and optic disc coloboma was reported for the first time in this study. Four novel mutations and one previously reported mutation were identified. These data expand the mutation spectrum in crystallin genes and enhance our understanding of the phenotypes of congenital cataracts.
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Affiliation(s)
- Zixi Sun
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Qi Zhou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Huajin Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Lizhu Yang
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Shijing Wu
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Zhou Q, Yao F, Wang F, Li H, Chen R, Sui R. A heterozygous mutation in RPGR associated with X-linked retinitis pigmentosa in a patient with Turner syndrome mosaicism (45,X/46,XX). Am J Med Genet A 2017; 176:214-218. [PMID: 29135076 DOI: 10.1002/ajmg.a.38501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/17/2017] [Accepted: 09/24/2017] [Indexed: 01/15/2023]
Abstract
Turner syndrome with retinitis pigmentosa (RP) is rare, with only three cases reported based on clinical examination alone. We summarized the 4-year follow-up and molecular findings in a 28-year-old patient with Turner syndrome and the typical features of short stature and neck webbing, who also had X-linked RP. Her main complaints were night blindness and progressive loss of vision since the age of 9 years. Ophthalmologic examination, optical coherent tomographic imaging, and visual electrophysiology tests showed classic manifestations of RP. The karyotype of peripheral blood showed mosaicism (45,X [72%]/46,XX[28%]). A novel heterozygous frameshift mutation (c.2403_2406delAGAG, p.T801fsX812) in the RP GTPase regulator (RPGR) gene was detected using next generation sequencing and validated by Sanger sequencing. We believe that this is the first report of X-linked RP in a patient with Turner syndrome associated with mosaicism, and an RPGR heterozygous mutation. We hypothesize that X-linked RP in this woman is not related to Turner syndrome, but may be a manifestation of the lack of a normal paternal X chromosome with intact but mutated RPGR.
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Affiliation(s)
- Qi Zhou
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Fengxia Yao
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Feng Wang
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Hui Li
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Rui Chen
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Zhou Q, Yao F, Han X, Li H, Yang L, Sui R. Rep1 copy number variation is an important genetic cause of choroideremia in Chinese patients. Exp Eye Res 2017; 164:64-73. [DOI: 10.1016/j.exer.2017.07.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/08/2017] [Accepted: 07/25/2017] [Indexed: 12/29/2022]
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