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Cortinhal T, Santos C, Vaz-Pereira S, Marta A, Duarte L, Miranda V, Costa J, Sousa AB, Peter VG, Kaminska K, Rivolta C, Carvalho AL, Saraiva J, Soares CA, Silva R, Murta J, Santos LC, Marques JP. Genetic profile of syndromic retinitis pigmentosa in Portugal. Graefes Arch Clin Exp Ophthalmol 2024; 262:1883-1897. [PMID: 38189974 PMCID: PMC11106148 DOI: 10.1007/s00417-023-06360-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 12/11/2023] [Accepted: 12/28/2023] [Indexed: 01/09/2024] Open
Abstract
PURPOSE Retinitis pigmentosa (RP) comprises a genetically and clinically heterogeneous group of inherited retinal degenerations, where 20-30% of patients exhibit extra-ocular manifestations (syndromic RP). Understanding the genetic profile of RP has important implications for disease prognosis and genetic counseling. This study aimed to characterize the genetic profile of syndromic RP in Portugal. METHODS Multicenter, retrospective cohort study. Six Portuguese healthcare providers identified patients with a clinical diagnosis of syndromic RP and available genetic testing results. All patients had been previously subjected to a detailed ophthalmologic examination and clinically oriented genetic testing. Genetic variants were classified according to the American College of Medical Genetics and Genomics; only likely pathogenic or pathogenic variants were considered relevant for disease etiology. RESULTS One hundred and twenty-two patients (53.3% males) from 100 families were included. Usher syndrome was the most frequent diagnosis (62.0%), followed by Bardet-Biedl (19.0%) and Senior-Løken syndromes (7.0%). Deleterious variants were identified in 86/100 families for a diagnostic yield of 86.0% (87.1% for Usher and 94.7% for Bardet-Biedl). A total of 81 genetic variants were identified in 25 different genes, 22 of which are novel. USH2A and MYO7A were responsible for most type II and type I Usher syndrome cases, respectively. BBS1 variants were the cause of Bardet-Biedl syndrome in 52.6% of families. Best-corrected visual acuity (BCVA) records were available at baseline and last visit for 99 patients (198 eyes), with a median follow-up of 62.0 months. The mean BCVA was 56.5 ETDRS letters at baseline (Snellen equivalent ~ 20/80), declining to 44.9 ETDRS letters (Snellen equivalent ~ 20/125) at the last available follow-up (p < 0.001). CONCLUSION This is the first multicenter study depicting the genetic profile of syndromic RP in Portugal, thus contributing toward a better understanding of this heterogeneous disease group. Usher and Bardet-Biedl syndromes were found to be the most common types of syndromic RP in this large Portuguese cohort. A high diagnostic yield was obtained, highlighting current genetic testing capabilities in providing a molecular diagnosis to most affected individuals. This has major implications in determining disease-related prognosis and providing targeted genetic counseling for syndromic RP patients in Portugal.
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Affiliation(s)
- Telmo Cortinhal
- Department of Ophthalmology, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Cristina Santos
- Instituto de Oftalmologia Dr. Gama Pinto (IOGP), Lisboa, Portugal
- iNOVA4Health, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisboa, Portugal
| | - Sara Vaz-Pereira
- Department of Ophthalmology, Centro Hospitalar Universitário de Lisboa Norte (CHULN), Lisboa, Portugal
- Department of Ophthalmology, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Marta
- Department of Ophthalmology, Centro Hospitalar e Universitário de Santo António (CHUdSA), Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
| | - Lilianne Duarte
- Department of Ophthalmology, Centro Hospitalar de Entre Douro e Vouga (CHEDV), Santa Maria da Feira, Portugal
| | - Vitor Miranda
- Department of Ophthalmology, Centro Hospitalar de Entre Douro e Vouga (CHEDV), Santa Maria da Feira, Portugal
| | - José Costa
- Department of Ophthalmology, Hospital de Braga (HB), Braga, Portugal
| | - Ana Berta Sousa
- Medical Genetics Unit, Hospital Pediátrico, Centro Hospitalar e Universitário de Lisboa Norte (CHULN), Lisboa, Portugal
| | - Virginie G Peter
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031, Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031, Basel, Switzerland
- Department of Ophthalmology, Inselspital, Bern University Hospital, 3010, Bern, Switzerland
| | - Karolina Kaminska
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031, Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031, Basel, Switzerland
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), 4031, Basel, Switzerland
- Department of Ophthalmology, University of Basel, 4031, Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester, LE1 7RH, United Kingdom
| | - Ana Luísa Carvalho
- Medical Genetics Unit, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University Clinic of Medical Genetics, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Jorge Saraiva
- Medical Genetics Unit, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University Clinic of Pediatrics, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Célia Azevedo Soares
- Medical Genetics Department, Centro de Genética Médica Jacinto Magalhães, Centro Hospitalar e Universitário do Porto (CHUP), Porto, Portugal
- Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Medical Science Department, Universidade de Aveiro, Aveiro, Portugal
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Rufino Silva
- Department of Ophthalmology, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University Clinic of Ophthalmology, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Joaquim Murta
- Department of Ophthalmology, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University Clinic of Ophthalmology, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | | | - João Pedro Marques
- Department of Ophthalmology, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal.
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal.
- University Clinic of Ophthalmology, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal.
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Bibert S, Quinodoz M, Perriot S, Krebs FS, Jan M, Malta RC, Collinet E, Canales M, Mathias A, Faignart N, Roulet-Perez E, Meylan P, Brouillet R, Opota O, Lozano-Calderon L, Fellmann F, Guex N, Zoete V, Asner S, Rivolta C, Du Pasquier R, Bochud PY. Herpes simplex encephalitis due to a mutation in an E3 ubiquitin ligase. Nat Commun 2024; 15:3969. [PMID: 38730242 PMCID: PMC11087577 DOI: 10.1038/s41467-024-48287-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 04/26/2024] [Indexed: 05/12/2024] Open
Abstract
Encephalitis is a rare and potentially fatal manifestation of herpes simplex type 1 infection. Following genome-wide genetic analyses, we identified a previously uncharacterized and very rare heterozygous variant in the E3 ubiquitin ligase WWP2, in a 14-month-old girl with herpes simplex encephalitis. The p.R841H variant (NM_007014.4:c.2522G > A) impaired TLR3 mediated signaling in inducible pluripotent stem cells-derived neural precursor cells and neurons; cells bearing this mutation were also more susceptible to HSV-1 infection compared to control cells. The p.R841H variant increased TRIF ubiquitination in vitro. Antiviral immunity was rescued following the correction of p.R841H by CRISPR-Cas9 technology. Moreover, the introduction of p.R841H in wild type cells reduced such immunity, suggesting that this mutation is linked to the observed phenotypes.
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Affiliation(s)
- Stéphanie Bibert
- Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mathieu Quinodoz
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Sylvain Perriot
- Department of Clinical Neurosciences, Laboratory of Neuroimmunology, Neuroscience Research Centre, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Fanny S Krebs
- Department of Oncology UNIL-CHUV, Computer-Aided Molecular Engineering, University of Lausanne, Lausanne, Switzerland
- Ludwig Institute for Cancer Research, Lausanne, Switzerland
| | - Maxime Jan
- Bioinformatics Competence Center, University of Lausanne, Lausanne, Switzerland
| | - Rita C Malta
- Pediatric Infectious Diseases and Vaccinology Unit, Woman-Mother-Child Department, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Emilie Collinet
- Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Mathieu Canales
- Department of Clinical Neurosciences, Laboratory of Neuroimmunology, Neuroscience Research Centre, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Amandine Mathias
- Department of Clinical Neurosciences, Laboratory of Neuroimmunology, Neuroscience Research Centre, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nicole Faignart
- Department of Pediatrics, Child Neurology Unit, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Eliane Roulet-Perez
- Department of Pediatrics, Child Neurology Unit, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Pascal Meylan
- Institute of Microbiology, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - René Brouillet
- Institute of Microbiology, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Onya Opota
- Institute of Microbiology, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Leyder Lozano-Calderon
- Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland
| | | | - Nicolas Guex
- Bioinformatics Competence Center, University of Lausanne, Lausanne, Switzerland
| | - Vincent Zoete
- Department of Oncology UNIL-CHUV, Computer-Aided Molecular Engineering, University of Lausanne, Lausanne, Switzerland
- Ludwig Institute for Cancer Research, Lausanne, Switzerland
- Molecular Modelling Group, SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Sandra Asner
- Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland
- Pediatric Infectious Diseases and Vaccinology Unit, Woman-Mother-Child Department, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Renaud Du Pasquier
- Department of Clinical Neurosciences, Laboratory of Neuroimmunology, Neuroscience Research Centre, University Hospital and University of Lausanne, Lausanne, Switzerland
- Department of Clinical Neurosciences, Service of Neurology, University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Pierre-Yves Bochud
- Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland.
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Marta A, Marques JP, Santos C, Coutinho-Santos L, Vaz-Pereira S, Costa J, Arede P, Félix R, Geada S, Gouveia N, Silva R, Baptista M, Lume M, Parreira R, Azevedo Soares C, Menéres MJ, Lemos C, Melo Beirão J. The socioeconomic epidemiology of inherited retinal diseases in Portugal. Orphanet J Rare Dis 2024; 19:151. [PMID: 38594754 PMCID: PMC11003026 DOI: 10.1186/s13023-024-03161-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 03/30/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Inherited retinal diseases (IRDs) are a group of rare degenerative disorders of the retina that can lead to blindness from birth to late middle age. Knowing the target population and its resources is essential to better plan support measures. The aim of this study was to evaluate the socioeconomic characteristics of regions in Portugal where IRD patients reside to inform the planning of vision aid and rehabilitation intervention measures. RESULTS This study included 1082 patients from 973 families, aged 3 to 92 years, with a mean age of 44.8 ± 18.1 years. Patients living with an IRD were identified in 190 of the 308 municipalities. According to this study, the estimated IRD prevalence in Portugal was 10.4 per 100,000 inhabitants, and by municipalities, it ranged from 0 to 131.2 per 100,000 inhabitants. Overall, regions with a higher prevalence of IRD have a lower population density (r=-0.371, p < 0.001), a higher illiteracy rate (r = 0.404, p < 0.001) and an overall older population (r = 0.475, p < 0.001). Additionally, there is a lower proportion of doctor per capita (r = 0.350, p < 0.001), higher social security pensions beneficiaries (r = 0.439, p < 0.001), worse water quality for human consumption (r=-0.194, p = 0.008), fewer audiences at the cinema (r=-0.315, p < 0.001) and lower proportion of foreign guests in tourist accommodations (r=-0.287, p < 0.001). CONCLUSION The number of identified patients with IRD varied between regions. Using data from national statistics (PORDATA), we observed differences in socioeconomic characteristics between regions. Multiple targeted aid strategies can be developed to ensure that all IRD patients are granted full clinical and socioeconomic support.
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Affiliation(s)
- Ana Marta
- Department of Ophthalmology, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal.
- Instituto Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal.
| | - João Pedro Marques
- Centro de Responsabilidade Integrado de Oftalmologia do Centro Hospitalar e Universitário de Coimbra, EPE (CRIO-CHUC), Coimbra, Portugal
- Clinical Academic Center of Coimbra, Coimbra, Portugal
- Faculty of Medicine, University Clinic of Ophthalmology, University of Coimbra (FMUC), Coimbra, Portugal
| | - Cristina Santos
- Instituto de Oftalmologia Dr. Gama Pinto (IOGP), Lisboa, Portugal
- Faculdade de Ciências Médicas, NMS, FCM, NOVA Medical School, Universidade NOVA de Lisboa, 7 iNOVA4Health, Lisboa, Portugal
| | | | - Sara Vaz-Pereira
- Department of Ophthalmology, Centro Hospitalar Universitário de Lisboa Norte (CHULN), Lisboa, Portugal
- Department of Ophthalmology, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - José Costa
- Department of Ophthalmology, Hospital de Braga (HB), Braga, Portugal
| | - Pedro Arede
- Department of Ophthalmology, Centro Hospitalar Lisboa Ocidental, EPE (CHLO), Lisboa, Portugal
| | - Raquel Félix
- Centro de Responsabilidade Integrado de Oftalmologia do Centro Hospitalar e Universitário de Coimbra, EPE (CRIO-CHUC), Coimbra, Portugal
| | - Sara Geada
- Centro de Responsabilidade Integrado de Oftalmologia do Centro Hospitalar e Universitário de Coimbra, EPE (CRIO-CHUC), Coimbra, Portugal
| | - Nuno Gouveia
- Centro de Responsabilidade Integrado de Oftalmologia do Centro Hospitalar e Universitário de Coimbra, EPE (CRIO-CHUC), Coimbra, Portugal
| | - Rui Silva
- Department of Ophthalmology, Hospital de Braga (HB), Braga, Portugal
| | - Margarida Baptista
- Department of Ophthalmology, Centro Hospitalar Lisboa Ocidental, EPE (CHLO), Lisboa, Portugal
| | - Miguel Lume
- Department of Ophthalmology, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal
| | - Ricardo Parreira
- Department of Ophthalmology, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal
| | - Célia Azevedo Soares
- Medical Genetics Department, Centro de Genética Médica Jacinto Magalhães, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal
- Unit for Multidisciplinary Research in Biomedicine, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Medical Science Department, Universidade de Aveiro, Aveiro, Portugal
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Maria João Menéres
- Department of Ophthalmology, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
| | - Carolina Lemos
- Instituto Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
- Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Largo do Prof. Abel Salazar, 4099-001, Porto, Portugal
| | - João Melo Beirão
- Department of Ophthalmology, Centro Hospitalar Universitário de Santo António, EPE (CHUdSA), Porto, Portugal
- Instituto Ciências Biomédicas Abel Salazar (ICBAS), Porto, Portugal
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Ozguc Caliskan B, Uslu K, Sinim Kahraman N, Erkilic K, Oner A, Dundar M. Beyond the phenotype: Exploring inherited retinal diseases with targeted next-generation sequencing in a Turkish cohort. Clin Genet 2024. [PMID: 38576124 DOI: 10.1111/cge.14529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/23/2024] [Accepted: 03/28/2024] [Indexed: 04/06/2024]
Abstract
This research aims to compile recent clinical and genetic data from Turkish patients with inherited retinal disorders and evaluate the effectiveness of targeted Next-generation sequencing panels. The study included Turkish individuals with hereditary retinal diseases who visited the Medical Genetic Department of Erciyes University between 2019 and 2022. One proband per family was selected based on eligibility. We used Hereditary Disorder Solution (HDS) by Sophia Genetics and performed next-generation sequencing (NGS) with Illumina NextSeq-500. Bioinformatics analysis using Sophia DDM® SaaS algorithms and ACMG guidelines classified genomic changes. The study involved 354 probands. Disease-causing variants were found in 58.1% of patients, with ABCA4, USH2A, RDH12, and EYS being the most frequently implicated genes. Forty-eight novel variants were detected. This study enhances the knowledge of clinical diagnoses, symptom onset, inheritance patterns, and genetic details for Turkish individuals with hereditary retinal disease. It contributes to broader health strategies by enabling comparisons with other studies.
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Affiliation(s)
- Busra Ozguc Caliskan
- Faculty of Medicine, Department of Medical Genetics, Erciyes University, Kayseri, Turkey
| | - Kubra Uslu
- Faculty of Medicine, Department of Medical Genetics, Erciyes University, Kayseri, Turkey
| | | | - Kuddusi Erkilic
- Faculty of Medicine, Department of Ophthalmology, Erciyes University, Kayseri, Turkey
| | - Ayse Oner
- Department of Ophthalmology, Acibadem Kayseri Hospital, Kayseri, Turkey
| | - Munis Dundar
- Faculty of Medicine, Department of Medical Genetics, Erciyes University, Kayseri, Turkey
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Han JH, Rodenburg K, Hayman T, Calzetti G, Kaminska K, Quinodoz M, Marra M, Wallerich S, Allon G, Nagy ZZ, Knézy K, Li Y, Chen R, Barboni MTS, Yang P, Pennesi ME, van den Born LI, Varsányi B, Szabó V, Sharon D, Banin E, Ben-Yosef T, Roosing S, Koenekoop RK, Rivolta C. Loss-of-function variants in UBAP1L cause autosomal recessive retinal degeneration. Genet Med 2024:101106. [PMID: 38420906 DOI: 10.1016/j.gim.2024.101106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 02/23/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024] Open
Abstract
PURPOSE Inherited retinal diseases (IRDs) are a group of monogenic conditions that can lead to progressive blindness. Their missing heritability is still considerable, due in part to the presence of disease genes that await molecular identification. The purpose of this work was to identify novel genetic associations with IRDs. METHODS Patients underwent a comprehensive ophthalmological evaluation using standard-of-care tests, such as detailed retinal imaging (macular optical coherence tomography and short-wavelength fundus autofluorescence) and electrophysiological testing. Exome and genome sequencing, as well as computer-assisted data analysis were used for genotyping and detection of DNA variants. A minigene-driven splicing assay was performed to validate the deleterious effects of 1 of such variants. RESULTS We identified 8 unrelated families from Hungary, the United States, Israel, and The Netherlands with members presenting with a form of autosomal recessive and nonsyndromic retinal degeneration, predominantly described as rod-cone dystrophy but also including cases of cone/cone-rod dystrophy. Age of disease onset was very variable, with some patients experiencing first symptoms during their fourth decade of life or later. Myopia greater than 5 diopters was present in 5 of 7 cases with available refractive data, and retinal detachment was reported in 2 cases. All ascertained patients carried biallelic loss-of-function variants in UBAP1L (HGNC: 40028), a gene with unknown function and with homologies to UBAP1, encoding a protein involved in ubiquitin metabolism. One of these pathogenic variants, the intronic NM_001163692.2:c.910-7G>A substitution, was identified in 5 unrelated families. Minigene-driven splicing assays in HEK293T cells confirmed that this DNA change is responsible for the creation of a new acceptor splice site, resulting in aberrant splicing. CONCLUSION We identified UBAP1L as a novel IRD gene. Although its function is currently unknown, UBAP1L is almost exclusively expressed in photoreceptors and the retinal pigment epithelium, hence possibly explaining the link between pathogenic variants in this gene and an ocular phenotype.
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Affiliation(s)
- Ji Hoon Han
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland
| | - Kim Rodenburg
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tamar Hayman
- Department of Ophthalmology, Hadassah Medical Center, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Giacomo Calzetti
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland
| | - Karolina Kaminska
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland
| | - Mathieu Quinodoz
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland; Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom
| | - Molly Marra
- Casey Eye Institute, Oregon Health and Science University, Portland, OR
| | - Sandrine Wallerich
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland
| | - Gilad Allon
- Department of Ophthalmology, Meir Medical Center, Kfar Saba, Israel
| | - Zoltán Z Nagy
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Krisztina Knézy
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Yumei Li
- Department of Molecular and Human Genetics, Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX
| | - Rui Chen
- Department of Molecular and Human Genetics, Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX
| | | | - Paul Yang
- Casey Eye Institute, Oregon Health and Science University, Portland, OR
| | - Mark E Pennesi
- Casey Eye Institute, Oregon Health and Science University, Portland, OR
| | | | - Balázs Varsányi
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Viktória Szabó
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Dror Sharon
- Department of Ophthalmology, Hadassah Medical Center, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eyal Banin
- Department of Ophthalmology, Hadassah Medical Center, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tamar Ben-Yosef
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Susanne Roosing
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Robert K Koenekoop
- Departments of Pediatric Surgery, Human Genetics and Ophthalmology, Montreal Children's Hospital, McGill University and McGill University Health Center Research Institute, Montreal, QC, Canada
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland; Department of Ophthalmology, University Hospital Basel, Basel, Switzerland; Department of Genetics and Genome Biology, University of Leicester, Leicester, United Kingdom.
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6
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Zheng Y, Chen S. Transcriptional precision in photoreceptor development and diseases - Lessons from 25 years of CRX research. Front Cell Neurosci 2024; 18:1347436. [PMID: 38414750 PMCID: PMC10896975 DOI: 10.3389/fncel.2024.1347436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/19/2024] [Indexed: 02/29/2024] Open
Abstract
The vertebrate retina is made up of six specialized neuronal cell types and one glia that are generated from a common retinal progenitor. The development of these distinct cell types is programmed by transcription factors that regulate the expression of specific genes essential for cell fate specification and differentiation. Because of the complex nature of transcriptional regulation, understanding transcription factor functions in development and disease is challenging. Research on the Cone-rod homeobox transcription factor CRX provides an excellent model to address these challenges. In this review, we reflect on 25 years of mammalian CRX research and discuss recent progress in elucidating the distinct pathogenic mechanisms of four CRX coding variant classes. We highlight how in vitro biochemical studies of CRX protein functions facilitate understanding CRX regulatory principles in animal models. We conclude with a brief discussion of the emerging systems biology approaches that could accelerate precision medicine for CRX-linked diseases and beyond.
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Affiliation(s)
- Yiqiao Zheng
- Molecular Genetics and Genomics Graduate Program, Division of Biological and Biomedical Sciences, Saint Louis, MO, United States
- Department of Ophthalmology and Visual Sciences, Saint Louis, MO, United States
| | - Shiming Chen
- Molecular Genetics and Genomics Graduate Program, Division of Biological and Biomedical Sciences, Saint Louis, MO, United States
- Department of Ophthalmology and Visual Sciences, Saint Louis, MO, United States
- Department of Developmental Biology, Washington University in St. Louis, Saint Louis, MO, United States
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7
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Conti GM, Cancellieri F, Quinodoz M, Kaminska K, Vaclavik V, Rivolta C, Tran HV. GNB1-Related Rod-Cone Dystrophy: A Case Report. Case Rep Ophthalmol 2024; 15:230-237. [PMID: 38500542 PMCID: PMC10948171 DOI: 10.1159/000537997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Abstract
Introduction The GNB1 (guanine nucleotide-binding protein, β1) gene encodes for the ubiquitous β1 subunit of heterotrimeric G proteins, which are associated with G-protein-coupled receptors (GPCRs). GNB1 mutations cause a neurodevelopmental disorder characterized by a broad clinical spectrum. A novel variant has recently been confirmed in a case of rod-cone dystrophy. Case Presentation We describe the second confirmed case of a classical rod-cone dystrophy associated with a mutation located in exon 6 of GNB1 [NM_002074.5:c.217G>C, p.(Ala73Pro)] in a 56-year-old patient also presenting mild intellectual disability, attention deficit/hyperactivity disorder, and truncal obesity. Conclusion This paper confirms the role of GNB1 in the pathogenesis of a classic rod-cone dystrophy and highlights the importance of including this gene in the genetic analysis panel for inherited retinal diseases.
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Affiliation(s)
- Giovanni Marco Conti
- Genetic Ophthalmic Department, Hôpital Ophtalmique Jules-Gonin, University of Lausanne and Faculty of Life Sciences, Lausanne, Switzerland
- Institut D’Ophtalmologie de Vevey (INOV), Vevey, Switzerland
| | - Francesca Cancellieri
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
| | - Mathieu Quinodoz
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
- Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Karolina Kaminska
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
| | - Veronika Vaclavik
- Genetic Ophthalmic Department, Hôpital Ophtalmique Jules-Gonin, University of Lausanne and Faculty of Life Sciences, Lausanne, Switzerland
| | - Carlo Rivolta
- Institute of Molecular and Clinical Ophthalmology Basel (IOB), Basel, Switzerland
- Department of Ophthalmology, University of Basel, Basel, Switzerland
- Genetics and Genome Biology, University of Leicester, Leicester, UK
| | - Hoai Viet Tran
- Genetic Ophthalmic Department, Hôpital Ophtalmique Jules-Gonin, University of Lausanne and Faculty of Life Sciences, Lausanne, Switzerland
- Institut D’Ophtalmologie de Vevey (INOV), Vevey, Switzerland
- Centre for Gene Therapy and Regenerative Medicine, King’s College London, London, UK
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