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Lian Y, Bodian D, Shehu A. Elucidating the Role of Wildtype and Variant FGFR2 Structural Dynamics in (Dys)Function and Disorder. Int J Mol Sci 2024; 25:4523. [PMID: 38674107 PMCID: PMC11050683 DOI: 10.3390/ijms25084523] [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: 03/12/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
The fibroblast growth factor receptor 2 (FGFR2) gene is one of the most extensively studied genes with many known mutations implicated in several human disorders, including oncogenic ones. Most FGFR2 disease-associated gene mutations are missense mutations that result in constitutive activation of the FGFR2 protein and downstream molecular pathways. Many tertiary structures of the FGFR2 kinase domain are publicly available in the wildtype and mutated forms and in the inactive and activated state of the receptor. The current literature suggests a molecular brake inhibiting the ATP-binding A loop from adopting the activated state. Mutations relieve this brake, triggering allosteric changes between active and inactive states. However, the existing analysis relies on static structures and fails to account for the intrinsic structural dynamics. In this study, we utilize experimentally resolved structures of the FGFR2 tyrosine kinase domain and machine learning to capture the intrinsic structural dynamics, correlate it with functional regions and disease types, and enrich it with predicted structures of variants with currently no experimentally resolved structures. Our findings demonstrate the value of machine learning-enabled characterizations of structure dynamics in revealing the impact of mutations on (dys)function and disorder in FGFR2.
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Affiliation(s)
- Yiyang Lian
- School of Systems Biology, George Mason University, Manassas, VA 20110, USA;
| | - Dale Bodian
- Diamond Age Data Science, Boston, MA 02143, USA;
| | - Amarda Shehu
- School of Systems Biology, George Mason University, Manassas, VA 20110, USA;
- Department of Computer Science, George Mason University, Fairfax, VA 22030, USA
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2
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Hale AT, Boudreau H, Devulapalli R, Duy PQ, Atchley TJ, Dewan MC, Goolam M, Fieggen G, Spader HL, Smith AA, Blount JP, Johnston JM, Rocque BG, Rozzelle CJ, Chong Z, Strahle JM, Schiff SJ, Kahle KT. The genetic basis of hydrocephalus: genes, pathways, mechanisms, and global impact. Fluids Barriers CNS 2024; 21:24. [PMID: 38439105 PMCID: PMC10913327 DOI: 10.1186/s12987-024-00513-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 01/25/2024] [Indexed: 03/06/2024] Open
Abstract
Hydrocephalus (HC) is a heterogenous disease characterized by alterations in cerebrospinal fluid (CSF) dynamics that may cause increased intracranial pressure. HC is a component of a wide array of genetic syndromes as well as a secondary consequence of brain injury (intraventricular hemorrhage (IVH), infection, etc.) that can present across the age spectrum, highlighting the phenotypic heterogeneity of the disease. Surgical treatments include ventricular shunting and endoscopic third ventriculostomy with or without choroid plexus cauterization, both of which are prone to failure, and no effective pharmacologic treatments for HC have been developed. Thus, there is an urgent need to understand the genetic architecture and molecular pathogenesis of HC. Without this knowledge, the development of preventive, diagnostic, and therapeutic measures is impeded. However, the genetics of HC is extraordinarily complex, based on studies of varying size, scope, and rigor. This review serves to provide a comprehensive overview of genes, pathways, mechanisms, and global impact of genetics contributing to all etiologies of HC in humans.
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Affiliation(s)
- Andrew T Hale
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2ndAve, Birmingham, AL, 35294, UK.
| | - Hunter Boudreau
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2ndAve, Birmingham, AL, 35294, UK
| | - Rishi Devulapalli
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Phan Q Duy
- Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Travis J Atchley
- Department of Neurosurgery, University of Alabama at Birmingham, FOT Suite 1060, 1720 2ndAve, Birmingham, AL, 35294, UK
| | - Michael C Dewan
- Division of Pediatric Neurosurgery, Monroe Carell Jr. Children's Hospital, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Mubeen Goolam
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa
| | - Graham Fieggen
- Neuroscience Institute, University of Cape Town, Cape Town, South Africa
- Division of Pediatric Neurosurgery, Red Cross War Memorial Children's Hospital, University of Cape Town, Cape Town, South Africa
| | - Heather L Spader
- Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Anastasia A Smith
- Division of Pediatric Neurosurgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Jeffrey P Blount
- Division of Pediatric Neurosurgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, UK
| | - James M Johnston
- Division of Pediatric Neurosurgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Brandon G Rocque
- Division of Pediatric Neurosurgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Curtis J Rozzelle
- Division of Pediatric Neurosurgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Zechen Chong
- Heflin Center for Genomics, University of Alabama at Birmingham, Birmingham, AL, UK
| | - Jennifer M Strahle
- Division of Pediatric Neurosurgery, St. Louis Children's Hospital, Washington University in St. Louis, St. Louis, MO, USA
| | - Steven J Schiff
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Albaugh SL, Diaz A, Wang E, Shen TC, Williams L, He TC, Reid RR. Systematic Review of Nonsyndromic Craniosynostosis: Genomic Alterations and Impacted Signaling Pathways. Plast Reconstr Surg 2024; 153:383e-396e. [PMID: 37070824 DOI: 10.1097/prs.0000000000010522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
BACKGROUND Genetic research in nonsyndromic craniosynostosis remains limited compared with syndromic craniosynostosis. This systematic review aimed to comprehensively summarize the genetic literature of nonsyndromic craniosynostosis and highlight key signaling pathways. METHODS The authors performed a systematic literature search of PubMed, Ovid, and Google Scholar databases from inception until December of 2021 using search terms related to nonsyndromic craniosynostosis and genetics. Two reviewers screened titles and abstract for relevance, and three reviewers independently extracted study characteristics and genetic data. Gene networks were constructed using Search Tool for Retrieval of Interacting Genes/Proteins (version 11) analysis. RESULTS Thirty-three articles published between 2001 and 2020 met inclusion criteria. Studies were further classified into candidate gene screening and variant identification studies ( n = 16), genetic expression studies ( n = 13), and common and rare variant association studies ( n = 4). Most studies were good quality. Using our curated list of 116 genes extracted from the studies, two main networks were constructed. CONCLUSIONS This systematic review concerns the genetics of nonsyndromic craniosynostosis, with network construction revealing TGF-β/BMP, Wnt, and NF-κB/RANKL as important signaling pathways. Future studies should focus on rare rather than common variants to examine the missing heritability in this defect and, going forward, adopt a standard definition.
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Affiliation(s)
| | - Ashley Diaz
- From the Pritzker School of Medicine, University of Chicago
| | - Esther Wang
- From the Pritzker School of Medicine, University of Chicago
| | - Timothy C Shen
- From the Pritzker School of Medicine, University of Chicago
| | - Lydia Williams
- Laboratory of Craniofacial Biology and Development, Department of Surgery, Section of Plastic and Reconstructive Surgery
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Surgery, Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Chicago Medical Center
| | - Russell R Reid
- Laboratory of Craniofacial Biology and Development, Department of Surgery, Section of Plastic and Reconstructive Surgery
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Schmidt J, Kaulfuß S, Ott H, Gaubert M, Reintjes N, Bremmer F, Dreha-Kulaczewski S, Stroebel P, Yigit G, Wollnik B. Expansion of the complex genotypic and phenotypic spectrum of FGFR2-associated neurocutaneous syndromes. Hum Genet 2024; 143:159-168. [PMID: 38265560 PMCID: PMC10881730 DOI: 10.1007/s00439-023-02634-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 12/15/2023] [Indexed: 01/25/2024]
Abstract
The fibroblast growth factor receptors comprise a family of related but individually distinct tyrosine kinase receptors. Within this family, FGFR2 is a key regulator in many biological processes, e.g., cell proliferation, tumorigenesis, metastasis, and angiogenesis. Heterozygous activating non-mosaic germline variants in FGFR2 have been linked to numerous autosomal dominantly inherited disorders including several craniosynostoses and skeletal dysplasia syndromes. We report on a girl with cutaneous nevi, ocular malformations, macrocephaly, mild developmental delay, and the initial clinical diagnosis of Schimmelpenning-Feuerstein-Mims syndrome, a very rare mosaic neurocutaneous disorder caused by postzygotic missense variants in HRAS, KRAS, and NRAS. Exome sequencing of blood and affected skin tissue identified the mosaic variant c.1647=/T > G p.(Asn549=/Lys) in FGFR2, upstream of the RAS signaling pathway. The variant is located in the tyrosine kinase domain of FGFR2 in a region that regulates the activity of the receptor and structural mapping and functional characterization revealed that it results in constitutive receptor activation. Overall, our findings indicate FGFR2-associated neurocutaneous syndrome as the accurate clinical-molecular diagnosis for the reported individual, and thereby expand the complex genotypic and phenotypic spectrum of FGFR-associated disorders. We conclude that molecular analysis of FGFR2 should be considered in the genetic workup of individuals with the clinical suspicion of a mosaic neurocutaneous condition, as the knowledge of the molecular cause might have relevant implications for genetic counseling, prognosis, tumor surveillance and potential treatment options.
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Affiliation(s)
- Julia Schmidt
- Institute of Human Genetics, University Medical Center Göttingen, Heinrich-Düker-Weg 12, 37073, Göttingen, Germany.
| | - Silke Kaulfuß
- Institute of Human Genetics, University Medical Center Göttingen, Heinrich-Düker-Weg 12, 37073, Göttingen, Germany
| | - Hagen Ott
- Department of Pediatric Dermatology, Children's Hospital Auf Der Bult, Academic Hospital, Hannover, Germany
| | - Marianne Gaubert
- Institute of Human Genetics, University Medical Center Göttingen, Heinrich-Düker-Weg 12, 37073, Göttingen, Germany
| | - Nadine Reintjes
- Institute of Human Genetics, University Hospital Cologne, Cologne, Germany
| | - Felix Bremmer
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Steffi Dreha-Kulaczewski
- Department of Pediatrics and Adolescent Medicine, University Medical Center Göttingen, Göttingen, Germany
| | - Philipp Stroebel
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Gökhan Yigit
- Institute of Human Genetics, University Medical Center Göttingen, Heinrich-Düker-Weg 12, 37073, Göttingen, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, Göttingen, Germany
| | - Bernd Wollnik
- Institute of Human Genetics, University Medical Center Göttingen, Heinrich-Düker-Weg 12, 37073, Göttingen, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: From Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Göttingen, Germany
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Liu M, Niu X, Liu H, Chen J. Germline EGFR mutations in lung cancer (Review). Oncol Lett 2023; 26:282. [PMID: 37274482 PMCID: PMC10236141 DOI: 10.3892/ol.2023.13868] [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: 01/06/2023] [Accepted: 04/17/2023] [Indexed: 06/06/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related death and familial lung cancer is a potential contributing factor. Epidermal growth factor receptor (EGFR) mutations are important events in carcinogenesis. The present study summarized the common germline mutations of EGFR, including T790M, V843I, R776H and P848L, and provided detailed information regarding each mutation site and potential treatment strategies. Individuals with germline mutations may develop lung cancer upon exposure to environmental stimuli such as smoking, air pollution or radiological contamination, or due to the occurrence of another somatic mutation. The present study recommends regular physical examinations as well as population-wide germline mutation screening for early detection and diagnosis of lung cancer.
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Affiliation(s)
- Minghui Liu
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Xiaoyu Niu
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Hongyu Liu
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
| | - Jun Chen
- Department of Lung Cancer Surgery, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenvironment, Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Heping, Tianjin 300052, P.R. China
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Zhao X, Erhardt S, Sung K, Wang J. FGF signaling in cranial suture development and related diseases. Front Cell Dev Biol 2023; 11:1112890. [PMID: 37325554 PMCID: PMC10267317 DOI: 10.3389/fcell.2023.1112890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 05/22/2023] [Indexed: 06/17/2023] Open
Abstract
Suture mesenchymal stem cells (SMSCs) are a heterogeneous stem cell population with the ability to self-renew and differentiate into multiple cell lineages. The cranial suture provides a niche for SMSCs to maintain suture patency, allowing for cranial bone repair and regeneration. In addition, the cranial suture functions as an intramembranous bone growth site during craniofacial bone development. Defects in suture development have been implicated in various congenital diseases, such as sutural agenesis and craniosynostosis. However, it remains largely unknown how intricate signaling pathways orchestrate suture and SMSC function in craniofacial bone development, homeostasis, repair and diseases. Studies in patients with syndromic craniosynostosis identified fibroblast growth factor (FGF) signaling as an important signaling pathway that regulates cranial vault development. A series of in vitro and in vivo studies have since revealed the critical roles of FGF signaling in SMSCs, cranial suture and cranial skeleton development, and the pathogenesis of related diseases. Here, we summarize the characteristics of cranial sutures and SMSCs, and the important functions of the FGF signaling pathway in SMSC and cranial suture development as well as diseases caused by suture dysfunction. We also discuss emerging current and future studies of signaling regulation in SMSCs.
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Affiliation(s)
- Xiaolei Zhao
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Shannon Erhardt
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- MD Anderson Cancer Center and UT Health Graduate School of Biomedical Sciences, The University of Texas, Houston, TX, United States
| | - Kihan Sung
- Department of BioSciences, Rice University, Houston, TX, United States
| | - Jun Wang
- Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
- MD Anderson Cancer Center and UT Health Graduate School of Biomedical Sciences, The University of Texas, Houston, TX, United States
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Ragothaman M, Yoo SY. Engineered Phage-Based Cancer Vaccines: Current Advances and Future Directions. Vaccines (Basel) 2023; 11:vaccines11050919. [PMID: 37243023 DOI: 10.3390/vaccines11050919] [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: 03/27/2023] [Revised: 04/22/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023] Open
Abstract
Bacteriophages have emerged as versatile tools in the field of bioengineering, with enormous potential in tissue engineering, vaccine development, and immunotherapy. The genetic makeup of phages can be harnessed for the development of novel DNA vaccines and antigen display systems, as they can provide a highly organized and repetitive presentation of antigens to immune cells. Bacteriophages have opened new possibilities for the targeting of specific molecular determinants of cancer cells. Phages can be used as anticancer agents and carriers of imaging molecules and therapeutics. In this review, we explored the role of bacteriophages and bacteriophage engineering in targeted cancer therapy. The question of how the engineered bacteriophages can interact with the biological and immunological systems is emphasized to comprehend the underlying mechanism of phage use in cancer immunotherapy. The effectiveness of phage display technology in identifying high-affinity ligands for substrates, such as cancer cells and tumor-associated molecules, and the emerging field of phage engineering and its potential in the development of effective cancer treatments are discussed. We also highlight phage usage in clinical trials as well as the related patents. This review provides a new insight into engineered phage-based cancer vaccines.
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Affiliation(s)
- Murali Ragothaman
- BIO-IT Foundry Technology Institute, Pusan National University, Busan 46241, Republic of Korea
| | - So Young Yoo
- BIO-IT Foundry Technology Institute, Pusan National University, Busan 46241, Republic of Korea
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Bille A, Foss-Skiftesvik J, Juhler M. The current understanding of germline predisposition in non-syndromic sagittal craniosynostosis: a systematic review. Childs Nerv Syst 2023; 39:689-700. [PMID: 36400978 DOI: 10.1007/s00381-022-05736-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 11/03/2022] [Indexed: 11/21/2022]
Abstract
PURPOSE The objective of this literature review was to provide a comprehensive and up-to-date overview of the current understanding of the genetic etiology for non-syndromic sagittal craniosynostosis. METHODS Using the PubMed database and Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), we systematically reviewed relevant records on germline genetics in children with non-syndromic sagittal craniosynostosis. RESULTS Two hundred two records were identified, of which 25 were included following title and abstract screening and subsequent full-text review. The 25 records in combination included 829 children with non-syndromic sagittal craniosynostosis. A likely pathogenic or pathogenic germline variant was reported for 9.8% of the 827 patients for whom germline genetic testing was performed. The reported variants were distributed across 50 different genes, with more than one variant detected in 13 genes. CONCLUSION Based on the existing literature, genetic predisposition is likely to play a role in at least 9% of children with non-syndromic sagittal craniosynostosis. Future studies will benefit from international consensus in terms of diagnostic nomenclature and a higher level of standardization across study methodologies and bioinformatic approaches.
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Affiliation(s)
- Agnes Bille
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Neurosurgery, Section 6031 Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Jon Foss-Skiftesvik
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Neurosurgery, Section 6031 Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Marianne Juhler
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
- Department of Neurosurgery, Section 6031 Copenhagen University Hospital Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark.
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Niu Y, Xu J, Ye R, Dai Z, Jin L, Geng W. Crouzon syndrome complicated with binocular strabismus and extraocular muscle fibrosis: a case report. J Med Case Rep 2023; 17:51. [PMID: 36755349 PMCID: PMC9909971 DOI: 10.1186/s13256-022-03709-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 12/05/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Crouzon syndrome, a rare genetic disorder characterized by premature closure of coronal sutures, results in skull and facial deformities along with abnormal brain and ocular development. CASE PRESENTATION Here, we report a case of a 27-year-old ethnic han male patient who presented with complex binocular strabismus secondary to Crouzon syndrome. At the time of surgery, extraocular muscles were found to be fibrotic and results of the pathological examination revealed degeneration of muscle fibers, which were replaced by adipose tissue. The entire exome sequencing DNA testing indicated that the patient and his father possessed the fibroblast growth factor receptor 2 (FGFR2) gene c.G812T:p.G271V heterozygous mutation. Binocular strabismus corrective surgery was performed in this patient with a satisfactory outcome. CONCLUSIONS This case demonstrates that Crouzon syndrome patients can show an FGFR2 gene c.G812T:p.G271V mutation and display clinical symptoms such as extraocular muscle fibrosis, exotropia, exophthalmos, and a pointed head deformity.
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Affiliation(s)
- Yuling Niu
- Department of Ophthalmology, People's Hospital of Shenzhen Baoan District, Shenzhen, 518101, China.
| | - Jin Xu
- grid.508335.80000 0004 5373 5174Department of Ophthalmology, People’s Hospital of Shenzhen Baoan District, Shenzhen, 518101 China
| | - Rushan Ye
- grid.508335.80000 0004 5373 5174Department of Ophthalmology, People’s Hospital of Shenzhen Baoan District, Shenzhen, 518101 China
| | - Zixian Dai
- grid.508335.80000 0004 5373 5174Department of Ophthalmology, People’s Hospital of Shenzhen Baoan District, Shenzhen, 518101 China
| | - Ling Jin
- grid.508335.80000 0004 5373 5174Department of Ophthalmology, People’s Hospital of Shenzhen Baoan District, Shenzhen, 518101 China
| | - Wenwen Geng
- grid.508335.80000 0004 5373 5174Department of Ophthalmology, People’s Hospital of Shenzhen Baoan District, Shenzhen, 518101 China
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YAPIJAKIS CHRISTOS, PACHIS NIKOLAOS, SOTIRIADOU TRIANTAFYLLIA, VAILA CHRISTINA, MICHOPOULOU VASILIKI, VASSILIOU STAVROS. Molecular Mechanisms Involved in Craniosynostosis. In Vivo 2023; 37:36-46. [PMID: 36593018 PMCID: PMC9843758 DOI: 10.21873/invivo.13052] [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: 06/20/2022] [Revised: 11/07/2022] [Accepted: 11/16/2022] [Indexed: 01/03/2023]
Abstract
Craniosynostosis refers to the early fusion of one or many cranial sutures, causing craniofacial abnormalities observed in 1:2,500 births worldwide. In most cases (85%), craniosynostosis is presented as sporadic anomaly (non-syndromic craniosynostosis), while in other cases (15%) as part of syndromes (syndromic craniosynostosis). Patients with syndromic disorder usually have more severe symptoms compared to those with single suture synostosis. Most common syndromes of craniosynostosis include Pfeiffer, Apert, Crouzon, Jackson-Weiss, Muenke and Boston type MSX2-related syndrome. The main gene mutations in craniosynostosis involve FGFR1, FGFR2, FGFR3, TWIST1 and MSX2, which encode key factors influencing cranial bone morphogenesis. The main therapeutic approaches are surgical as discussed in this review, and the type of therapy depends on the graveness of the incident.
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Affiliation(s)
- CHRISTOS YAPIJAKIS
- Unit of Orofacial Genetics, 1st Department of Pediatrics, School of Medicine, National Kapodistrian University of Athens, "Agia Sophia" Children’s Hospital, Athens, Greece,Department of Molecular Genetics, "Cephalogenetics" Center, Athens, Greece,Department of Oral Maxillofacial Surgery, School of Medicine, National Kapodistrian University of Athens, Attikon Hospital, Athens, Greece
| | - NIKOLAOS PACHIS
- Unit of Orofacial Genetics, 1st Department of Pediatrics, School of Medicine, National Kapodistrian University of Athens, "Agia Sophia" Children’s Hospital, Athens, Greece,Department of Molecular Genetics, "Cephalogenetics" Center, Athens, Greece
| | - TRIANTAFYLLIA SOTIRIADOU
- Unit of Orofacial Genetics, 1st Department of Pediatrics, School of Medicine, National Kapodistrian University of Athens, "Agia Sophia" Children’s Hospital, Athens, Greece
| | - CHRISTINA VAILA
- Department of Molecular Genetics, "Cephalogenetics" Center, Athens, Greece
| | | | - STAVROS VASSILIOU
- Department of Oral Maxillofacial Surgery, School of Medicine, National Kapodistrian University of Athens, Attikon Hospital, Athens, Greece
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Clinical and Genetic Studies of the First Monozygotic Twins with Pfeiffer Syndrome. Genes (Basel) 2022; 13:genes13101850. [PMID: 36292735 PMCID: PMC9601734 DOI: 10.3390/genes13101850] [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: 09/20/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 11/16/2022] Open
Abstract
Objective: To report the clinical and radiographic findings and molecular etiology of the first monozygotic twins affected with Pfeiffer syndrome. Methods: Clinical and radiographic examination and whole exome sequencing were performed on two monozygotic twins with Pfeiffer syndrome. Results: An acceptor splice site mutation in FGFR2 (c.940-2A>G) was detected in both twins. The father and both twins shared the same haplotype, indicating that the mutant allele was from their father’s chromosome who suffered severe upper airway obstruction and subsequent obstructive sleep apnea. Hypertrophy of nasal turbinates appears to be a newly recognized finding of Pfeiffer syndrome. Increased intracranial pressure in both twins were corrected early by fronto-orbital advancement with skull expansion and open osteotomy, in order to prevent the more severe consequences of increased intracranial pressure, including hydrocephalus, the bulging of the anterior fontanelle, and the diastasis of suture. Conclusions: Both twins carried a FGFR2 mutation and were discordant for lambdoid synostosis. Midface hypoplasia, narrow nasal cavities, and hypertrophic nasal turbinates resulted in severe upper airway obstruction and subsequent obstructive sleep apnea in both twins. Hypertrophy of the nasal turbinates appears to be a newly recognized finding of Pfeiffer syndrome. Fronto-orbital advancement with skull expansion and open osteotomy was performed to treat increased intracranial pressure in both twins. This is the first report of monozygotic twins with Pfeiffer syndrome.
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12
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Zaki HA, Alassaf MS, Babkair HA, Abdel-Latif GA, Jaffar AK, Alolayan AB, Elsayed SAH. Multidisciplinary Rehabilitation Approach to the Maxillo-Facial Complications of Crouson’s Disease: Case Report and Review. Open Dent J 2022. [DOI: 10.2174/18742106-v16-e2206300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
Craniofacial anomalies present a challenge to all health care practitioners since they necessitate long-term team follow-up, which is difficult to achieve outside of a major center where craniofacial anomalies teams normally collaborate.
Objectives:
The current review with an illustrative case focuses on the representation and review of Crouzon syndrome and its maxillofacial implications. Review of different varieties of gene mutations that produce craniosynostosis syndromes were discussed and focused on seven clinically distinct craniosynostosis syndromes that are precipitated by the mutation in one or more of the fibroblast growth factor receptors genes which affected the maxillofacial region.
Case presentation:
A complete clinical and radiographic case scenario of a patient suffering from Crouzon syndrome was presented, and discussion of the various disciplines and techniques used along the way to achieve the best results, as well as how team collaboration and patient compliance led to the best results were represented. The presented case was treated with orthodontic treatment, Le Fort-I osteotomy, and Le Fort-III osteotomy with extraoral distraction osteogenesis.
Conclusion:
The combination of different orthognathic surgery alternatives (Le Fort-III and Le Fort-I) with distraction osteogenesis and orthodontic treatment produced excellent outcomes with few complications, and the patient was extremely satisfied and cooperative. Early and thorough team-based care for Crouzon syndrome patients should be accessible at specialized craniofacial centers.
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13
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The Effect of Yes-Associated Protein on the Interaction Between the MEK/Extracellular Signal-Regulated Kinase and Hippo Pathways in Osteoblasts Co-Cultured With Fibroblast Growth Factor Receptor 2-Mutated Dura Cells. J Craniofac Surg 2022; 33:1250-1254. [DOI: 10.1097/scs.0000000000008115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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14
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Wei X, Huang G, Gui B, Xie B, Chen S, Fan X, Chen Y. Phenotypic variability of syndromic craniosynostosis caused by c.833G > T in FGFR2: Clinical and genetic evaluation of eight patients from a five-generation family. Mol Genet Genomic Med 2022; 10:e1901. [PMID: 35235708 PMCID: PMC9000941 DOI: 10.1002/mgg3.1901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/28/2021] [Accepted: 02/02/2022] [Indexed: 01/25/2023] Open
Abstract
Objective Craniosynostosis is the result of the early fusion of cranial sutures. Syndromic craniosynostosis includes but not limited by Crouzon syndrome and Pfeiffer syndrome. Considerable phenotypic overlap exists among these syndromes and mutations in FGFR2 may cause different syndromes. This study aims to investigate the explanation of the phenotypic variability via clinical and genetic evaluation for eight patients in a large pedigree. Methods For each patient, comprehensive physical examination, cranial plain CT scan with three‐dimensional CT reconstruction (3D‐CT), and eye examinations were conducted. Whole exome sequencing was applied for genetic diagnosis of the proband. Variants were analyzed and interpreted following the ACMG/AMP guidelines. Sanger sequencing was performed to reveal genotypes of all the family members. Results A pathogenic variant in the FGFR2 gene, c.833G > T (p.C278F), was identified and proved to be co‐segregate with the disease. Some symptoms of head, hearing, vision, mouth, teeth expressed differently by affected individuals. Nonetheless, all the eight patients manifested core symptoms of Crouzon syndrome without abnormality in the limbs, which could exclude diagnosis of Pfeiffer syndrome. Conclusion We have established clinical and genetic diagnosis of Crouzon syndrome for eight patients in a five‐generation Chinese family. Variability of clinical features among these familial patients was slighter than that in previously reported sporadic cases.
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Affiliation(s)
- Xianda Wei
- Center for Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Guori Huang
- The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,Department of Pediatrics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Baoheng Gui
- Center for Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Bobo Xie
- Center for Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Shaoke Chen
- The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,Department of Pediatrics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xin Fan
- The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,Department of Pediatrics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yujun Chen
- The Guangxi Health Commission Key Laboratory of Medical Genetics and Genomics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China.,Department of Pediatrics, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
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15
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Abstract
In 46,XY men, testis is determined by a genetic network(s) that both promotes testis formation and represses ovarian development. Disruption of this process results in a lack of testis-determination and affected individuals present with 46,XY gonadal dysgenesis (GD), a part of the spectrum of Disorders/Differences of Sex Development/Determination (DSD). A minority of all cases of GD are associated with pathogenic variants in key players of testis-determination, SRY, SOX9, MAP3K1 and NR5A1. However, most of the cases remain unexplained. Recently, unbiased exome sequencing approaches have revealed new genes and loci that may cause 46,XY GD. We critically evaluate the evidence to support causality of these factors and describe how functional studies are continuing to improve our understanding of genotype-phenotype relationships in genes that are established causes of GD. As genomic data continues to be generated from DSD cohorts, we propose several recommendations to help interpret the data and establish causality.
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Affiliation(s)
- Maëva Elzaiat
- Human Developmental Genetics, Institut Pasteur, Paris, France
| | - Ken McElreavey
- Human Developmental Genetics, Institut Pasteur, Paris, France
| | - Anu Bashamboo
- Human Developmental Genetics, Institut Pasteur, Paris, France.
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16
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Wang CY, Tang YA, Lee IW, Chang FM, Chien CW, Pan HA, Sun HS. Development and validation of an expanded targeted sequencing panel for non-invasive prenatal diagnosis of sporadic skeletal dysplasia. BMC Med Genomics 2021; 14:212. [PMID: 34789231 PMCID: PMC8600686 DOI: 10.1186/s12920-021-01063-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 11/22/2022] Open
Abstract
Background Skeletal dysplasia (SD) is one of the most common inherited neonatal disorders worldwide, where the recurrent pathogenic mutations in the FGFR2, FGFR3, COL1A1, COL1A2 and COL2A1 genes are frequently reported in both non-lethal and lethal SD. The traditional prenatal diagnosis of SD using ultrasonography suffers from lower accuracy and performed at latter gestational stage. Therefore, it remains in desperate need of precise and accurate prenatal diagnosis of SD in early pregnancy. With the advancements of next-generation sequencing (NGS) technology and bioinformatics analysis, it is feasible to develop a NGS-based assay to detect genetic defects in association with SD in the early pregnancy. Methods An ampliseq-based targeted sequencing panel was designed to cover 87 recurrent hotspots reported in 11 common dominant SD and run on both Ion Proton and NextSeq550 instruments. Thirty-six cell-free and 23 genomic DNAs were used for assay developed. Spike-in DNA prepared from standard sample harboring known mutation and normal sample were also employed to validate the established SD workflow. Overall performances of coverage, uniformity, and on-target rate, and the detecting limitations on percentage of fetal fraction and read depth were evaluated. Results The established targeted-seq workflow enables a single-tube multiplex PCR for library construction and shows high amplification efficiency and robust reproducibility on both Ion Proton and NextSeq550 platforms. The workflow reaches 100% coverage and both uniformity and on-target rate are > 96%, indicating a high quality assay. Using spike-in DNA with different percentage of known FGFR3 mutation (c.1138 G > A), the targeted-seq workflow demonstrated the ability to detect low-frequency variant of 2.5% accurately. Finally, we obtained 100% sensitivity and 100% specificity in detecting target mutations using established SD panel. Conclusions An expanded panel for rapid and cost-effective genetic detection of SD has been developed. The established targeted-seq workflow shows high accuracy to detect both germline and low-frequency variants. In addition, the workflow is flexible to be conducted in the majority of the NGS instruments and ready for routine clinical application. Taken together, we believe the established panel provides a promising diagnostic or therapeutic strategy for prenatal genetic testing of SD in routine clinical practice. Supplementary Information The online version contains supplementary material available at 10.1186/s12920-021-01063-1.
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Affiliation(s)
- Ching-Yuan Wang
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan.,Center for Genomic Medicine, Innovation Headquarters, National Cheng Kung University, Tainan, Taiwan
| | - Yen-An Tang
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan.,Center for Genomic Medicine, Innovation Headquarters, National Cheng Kung University, Tainan, Taiwan
| | - I-Wen Lee
- FMC Fetal Medicine Center, Tainan, Taiwan
| | | | - Chun-Wei Chien
- Center for Genomic Medicine, Innovation Headquarters, National Cheng Kung University, Tainan, Taiwan
| | | | - H Sunny Sun
- Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan. .,Center for Genomic Medicine, Innovation Headquarters, National Cheng Kung University, Tainan, Taiwan.
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17
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Singh CB, Mishra B, Patel R, Kumar A, Ali A. Tripod-shaped Syndactyly in Apert Syndrome with FGFR2 p.P253R Mutation. Indian J Plast Surg 2021; 54:370-372. [PMID: 34667527 PMCID: PMC8515315 DOI: 10.1055/s-0041-1733808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Apert syndrome is a rare acrocephalosyndactyly (craniosynostosis) syndrome characterized by craniofacial dysmorphism and syndactyly of the hands and feet. It is caused by FGFR2 mutations and inherited in an autosomal dominant manner. This article describes a novel clinical variant of Apert syndrome having bilateral symmetrical tripod-shaped syndactyly in hands with milder craniofacial features in a sporadic case, along with a mutation in the fibroblast growth factor receptor 2 ( FGFR2 ) gene. The patient had shown craniosynostosis, dysmorphic face, ocular hypertelorism, marked depression of the nasal bridge, long philtrum, and low set ears. Direct resequencing of the FGFR2 gene through Sanger's method identified a heterozygous missense mutation; FGFR2c.758C>G (FGFR2p.P253R) in the exon-7 of the gene.
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Affiliation(s)
- Chandra Bhan Singh
- Centre for Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Biswajit Mishra
- Department of Plastic Surgery, MKCG. Medical College and Hospital, Berhampur, Odisha, India
| | - Rashmi Patel
- Centre for Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashok Kumar
- Department of Pediatrics, SS Hospital, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Akhtar Ali
- Centre for Genetic Disorders, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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18
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Surgical Result and Identification of FGFR2 Variants Using Whole-Exome Sequencing in a Chinese Family With Crouzon Syndrome. J Craniofac Surg 2021; 33:134-138. [PMID: 34538793 DOI: 10.1097/scs.0000000000008153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Crouzon syndrome is considered as one of the most common craniosynostosis syndromes with a prevalence of 1 in 65,000 individuals, and has a close relationship with variants in fibroblast growth factor receptor 2. Here the authors described a Crouzon syndrome case, which was asked for surgery treatment for the symptom of multisuture craniosynostosis. Mild midfacial retrusion, larger head circumference, proptosis, pseudo-prognathism, and dental malposition could also be found obviously. Then fronto-orbital advancement and cranial cavity expansion were performed to the child. After whole-exome sequencing (WES) and Sanger sequencing, gene variants in the exons 2 and 3 of FGFR2 were detected. And protein tyrosine 105 replaced by cysteine in the extracellular region of FGFR2 was also detected. After operation, she presented a satisfactory anterior plagiocephaly and scaphocephaly correction, and the result was satisfied by surgeons and her parents. Variants detected using WES have further research prospect.
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19
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Noble AR, Cunningham ML, Lam A, Wenger TL, Sie KC, Perkins JA, Dahl JP. Complex Airway Management in Patients with Tracheal Cartilaginous Sleeves. Laryngoscope 2021; 132:215-221. [PMID: 34133757 DOI: 10.1002/lary.29692] [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: 04/04/2021] [Revised: 05/26/2021] [Accepted: 06/05/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVES/HYPOTHESIS A tracheal cartilaginous sleeve (TCS) is a rare anomaly characterized by anterior fusion of tracheal cartilages. TCS is associated with syndromic craniosynostoses including Apert, Crouzon and Pfeiffer syndromes and FGFR2, FGFR3, and TWIST1 variants. This study presents a 30-year review of patients with syndromic craniosynostosis and TCS and describes diagnostic methods, genetic variants, surgical interventions, and long-term outcomes. STUDY DESIGN Retrospective, single-institution review. METHODS This review included patients with syndromic craniosynostosis and TCS treated at Seattle Children's Hospital from 1990 to 2020. Tracheostomy, genetic variants, and additional surgery were primary measures. Fisher's exact test compared need for tracheostomy in patients with proposed high-risk (FGFR2 p.W290 or FGFR2 p.C342) versus low-risk genetic variants. RESULTS Thirty patients with TCS were identified. Average age at diagnosis was 12 months (range 2-weeks to 7.9-years; standard deviation 19.8 months). Syndromes included Pfeiffer (37%), Apert (37%), and Crouzon (26%). Severe obstructive sleep apnea was present in 76% of patients. Tracheostomy was performed in 17 patients (57%); five were successfully decannulated. Additional interventions included adenotonsillectomy (57%), nasal (20%), laryngeal (17%), and craniofacial skeletal surgery (87%). All patients with Pfeiffer syndrome and FGFR2 p.W290C variants and 83% of patients with FGFR2 p.C342 variants required tracheostomy, differing from other variants (P = .02, odds ratio 33, 95% confidence interval 1.56-697.96). One patient (3%) died. CONCLUSION TCS contributes to multilevel airway obstruction in patients with syndromic craniosynostosis. Genetic testing in patients with FGFR2-related syndromic craniosynostoses may identify those at risk of TCS and facilitate early intervention. A better understanding of this patient population may foster individualized airway management strategies and improve outcomes. LEVEL OF EVIDENCE 4 Laryngoscope, 2021.
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Affiliation(s)
- Anisha R Noble
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, Washington, U.S.A
| | - Michael L Cunningham
- Department of Pediatrics, Craniofacial Center, Seattle Children's Hospital, Seattle, Washington, U.S.A.,Department of Pediatrics, Division of Craniofacial Medicine, University of Washington School of Medicine, Seattle, Washington, U.S.A.,Seattle Children's Research Division, Seattle Children's Research Institute, Seattle, Washington, U.S.A
| | - Austin Lam
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, Washington, U.S.A
| | - Tara L Wenger
- Division of Genetic Medicine, University of Washington School of Medicine, Seattle, Washington, U.S.A
| | - Kathleen C Sie
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, Washington, U.S.A.,Department of Pediatrics, Craniofacial Center, Seattle Children's Hospital, Seattle, Washington, U.S.A.,Seattle Children's Research Division, Seattle Children's Research Institute, Seattle, Washington, U.S.A.,Division of Pediatric Otolaryngology - Head and Neck Surgery, Seattle Children's Hospital, Seattle, Washington, U.S.A
| | - Jonathan A Perkins
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, Washington, U.S.A.,Department of Pediatrics, Craniofacial Center, Seattle Children's Hospital, Seattle, Washington, U.S.A.,Seattle Children's Research Division, Seattle Children's Research Institute, Seattle, Washington, U.S.A.,Division of Pediatric Otolaryngology - Head and Neck Surgery, Seattle Children's Hospital, Seattle, Washington, U.S.A
| | - John P Dahl
- Department of Otolaryngology - Head and Neck Surgery, University of Washington School of Medicine, Seattle, Washington, U.S.A.,Department of Pediatrics, Craniofacial Center, Seattle Children's Hospital, Seattle, Washington, U.S.A.,Seattle Children's Research Division, Seattle Children's Research Institute, Seattle, Washington, U.S.A.,Division of Pediatric Otolaryngology - Head and Neck Surgery, Seattle Children's Hospital, Seattle, Washington, U.S.A
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20
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Cleary JM, Raghavan S, Wu Q, Li YY, Spurr LF, Gupta HV, Rubinson DA, Fetter IJ, Hornick JL, Nowak JA, Siravegna G, Goyal L, Shi L, Brais LK, Loftus M, Shinagare AB, Abrams TA, Clancy TE, Wang J, Patel AK, Brichory F, Vaslin Chessex A, Sullivan RJ, Keller RB, Denning S, Hill ER, Shapiro GI, Pokorska-Bocci A, Zanna C, Ng K, Schrag D, Janne PA, Hahn WC, Cherniack AD, Corcoran RB, Meyerson M, Daina A, Zoete V, Bardeesy N, Wolpin BM. FGFR2 Extracellular Domain In-Frame Deletions are Therapeutically Targetable Genomic Alterations that Function as Oncogenic Drivers in Cholangiocarcinoma. Cancer Discov 2021; 11:2488-2505. [PMID: 33926920 DOI: 10.1158/2159-8290.cd-20-1669] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/10/2021] [Accepted: 04/26/2021] [Indexed: 11/16/2022]
Abstract
We conducted next generation DNA sequencing on 335 biliary tract cancers and characterized the genomic landscape by anatomic site within the biliary tree. In addition to frequent FGFR2 fusions among patients with intrahepatic cholangiocarcinoma (IHCC), we identified FGFR2 extracellular domain in-frame deletions (EIDs) in 5 of 178 (2.8%) patients with IHCC, including two patients with FGFR2 p.H167_N173del. Expression of this FGFR2 EID in NIH3T3 cells resulted in constitutive FGFR2 activation, oncogenic transformation, and sensitivity to FGFR inhibitors. Three patients with FGFR2 EIDs were treated with Debio 1347, an oral FGFR-1/2/3 inhibitor, and all showed partial responses. One patient developed an acquired L618F FGFR2 kinase domain mutation at disease progression and experienced a further partial response for 17 months to an irreversible FGFR2 inhibitor, futibatinib. Together, these findings reveal FGFR2 EIDs as an alternative mechanism of FGFR2 activation in IHCC that predict sensitivity to FGFR inhibitors in the clinic.
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Affiliation(s)
- James M Cleary
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | | | | | - Yvonne Y Li
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | - Liam F Spurr
- Dana-Farber Cancer Institute, Harvard Medical School
| | - Hersh V Gupta
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | | | | | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School
| | | | | | - Lipika Goyal
- Internal Medicine, Massachusetts General Hospital Cancer Center, Harvard Medical School
| | - Lei Shi
- Center for Cancer Research, Massachusetts General Hospital Cancer Center, Harvard Medical School
| | - Lauren K Brais
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | | | - Atul B Shinagare
- Department of Radiology, Brigham and Women's Hospital/ Dana-Farber Cancer Institute
| | | | | | - Jiping Wang
- Department of Surgery, Brigham and Women's Hospital
| | - Anuj K Patel
- Department of Gastrointestinal Oncology, Dana-Farber Cancer Institute
| | | | | | - Ryan J Sullivan
- Center for Melanoma, Massachusetts General Hospital Cancer Center
| | | | | | - Emma R Hill
- Dana-Farber/Brigham and Women's Cancer Center
| | | | | | | | - Kimmie Ng
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | | | - Pasi A Janne
- Lowe Center for Thoracic Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute
| | - William C Hahn
- Department of Medical Oncology, Dana-Farber Cancer Institute
| | - Andrew D Cherniack
- Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School
| | | | | | | | | | | | - Brian M Wolpin
- Department of Medical Oncology, Dana-Farber/Harvard Cancer Center
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21
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Aloisio A, Nisticò N, Mimmi S, Maisano D, Vecchio E, Fiume G, Iaccino E, Quinto I. Phage-Displayed Peptides for Targeting Tyrosine Kinase Membrane Receptors in Cancer Therapy. Viruses 2021; 13:649. [PMID: 33918836 PMCID: PMC8070105 DOI: 10.3390/v13040649] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/04/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023] Open
Abstract
Receptor tyrosine kinases (RTKs) regulate critical physiological processes, such as cell growth, survival, motility, and metabolism. Abnormal activation of RTKs and relative downstream signaling is implicated in cancer pathogenesis. Phage display allows the rapid selection of peptide ligands of membrane receptors. These peptides can target in vitro and in vivo tumor cells and represent a novel therapeutic approach for cancer therapy. Further, they are more convenient compared to antibodies, being less expensive and non-immunogenic. In this review, we describe the state-of-the-art of phage display for development of peptide ligands of tyrosine kinase membrane receptors and discuss their potential applications for tumor-targeted therapy.
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Affiliation(s)
| | | | | | | | | | | | | | - Ileana Quinto
- Correspondence: (A.A.); (I.Q.): Tel.: +39-0961-3694057 (I.Q.)
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22
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Yan Q, He J, Gao Z, Qiu D, Zheng L, Zhang X, Wang G. Evaluation of fronto-orbital reconstruction surgery for the treatment of metopic synostosis in Chinese population. Childs Nerv Syst 2021; 37:1167-1174. [PMID: 33404707 DOI: 10.1007/s00381-020-04977-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 11/17/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE To evaluate the efficacy of fronto-orbit reconstruction surgery on pediatric metopic synostosis via an image-based 3D reconstruction in Chinese population. METHODS Thirty pediatric metopic synostosis patients who received fronto-orbital reconstruction surgery in the Children's Hospital of Nanjing Medical University, Department of Neurosurgery, from January 2007 to December 2018 were analyzed in the study. Here we use the Mimics 20.0 software to reconstruct patients' cranial thin-section CT scan images from pre- and post-operation and control groups. Then the data of intracranial volume, frontal volume, orbital hypertelorism, ECA, ZF, and ORA were analyzed using the paired t-test or Wilcoxon matched-pairs signed-ranks test. RESULTS The age of these patients was 15.83 ± 16.12 months. After surgery, the mean frontal volume was enlarged from 92.75 ± 26.97 to 138.62 ± 47.97 cm3 (P < 0.0001), and the intracranial volume was enhanced from 976.87 ± 230.83 to 1059.44 ± 217.98 cm3 (P < 0.0001). In the meantime, the ECA was changed from 108.02 ± 8.17 to 134 ± 5.59° (P < 0.0001). In line with the alteration of the parameters mentioned above, the head shapes in all patients were also significantly improved after the surgery with no obvious complications. CONCLUSION Fronto-orbit reconstruction surgery is a safe and effective treatment for pediatric metopic synostosis. Computer-aided 3D reconstruction could serve as a quantitative strategy to evaluate the efficacy of craniofacial surgery.
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Affiliation(s)
- Qing Yan
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Junping He
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Zhe Gao
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Dezhi Qiu
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Lei Zheng
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Xianli Zhang
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Gang Wang
- Department of Neurosurgery, Children's Hospital of Nanjing Medical University, Nanjing, China.
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23
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Lee BJ, Lee K, Chung SA, Lim HT. Ocular biometric features of pediatric patients with fibroblast growth factor receptor-related syndromic craniosynostosis. Sci Rep 2021; 11:6172. [PMID: 33731768 PMCID: PMC7969619 DOI: 10.1038/s41598-021-85620-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 03/03/2021] [Indexed: 11/09/2022] Open
Abstract
Ametropia is reported as a common ophthalmic manifestation in craniosynostosis. We retrospectively compared childhood refractive error and ocular biometric features of fibroblast growth factor receptor (FGFR)-related syndromic craniosynostosis patients with those of non-syndromic craniosynostosis and control subjects. Thirty-six eyes (18 patients) with FGFR-related syndromic craniosynostosis, 76 eyes (38 patients) with non-syndromic craniosynostosis, and 114 eyes (57 patients) of intermittent exotropes were included in the analysis. Mean age at examination was 7.82 ± 2.51 (range, 4–16) years and mean spherical equivalent was -0.09 ± 1.46 Diopter. Mean age and refractive error were not different between groups, but syndromic craniosynostosis patients had significantly longer axial length, lower corneal power, and lower lens power than other groups (p < 0.01, p < 0.01, and p < 0.01, respectively). Axial length was positively correlated and keratometry and lens power were negatively correlated with age in non-syndromic craniosynostosis and controls, while these correlations between age and ocular biometric parameters were not present in the FGFR-related syndromic craniosynostosis. In conclusion, ocular biometric parameters in FGFR-related syndromic craniosynostosis differed from those of non-syndromic craniosynostosis and age-matched controls, and did not show the relations with age, suggesting this cohort may have abnormal refractive growth.
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Affiliation(s)
- Byung Joo Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea
| | - Kihwang Lee
- Department of Ophthalmology, Ajou University School of Medicine, 164 World Cup‑ro, Yeongtong‑gu, Suwon, 16499, South Korea
| | - Seung Ah Chung
- Department of Ophthalmology, Ajou University School of Medicine, 164 World Cup‑ro, Yeongtong‑gu, Suwon, 16499, South Korea.
| | - Hyun Taek Lim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Korea.
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24
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Shi H, Yang J, Guo Q, Zhang M. Clinical assessment and FGFR2 mutation analysis in a Chinese family with Crouzon syndrome: A case report. Medicine (Baltimore) 2021; 100:e24991. [PMID: 33725872 PMCID: PMC7969214 DOI: 10.1097/md.0000000000024991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 02/11/2021] [Indexed: 01/05/2023] Open
Abstract
RATIONALE Crouzon syndrome is an autosomal dominant genetic disorder caused by mutations in fibroblast growth factor receptor 2 (FGFR2) and one of the most common types of craniosynostosis. Here we report the detection of FGFR2 mutation and its related clinical findings in 2 patients with Crouzon syndrome from a Chinese family. PATIENT CONCERNS We report a case of a 28-year-old male patient presented with the chief complaint of gradually blurring of his eyes over the last 6 months before visiting our clinics. History revealed low visual acuity in his right eye since childhood. Physical examination showed that both the patient and his mother have the appearance of craniofacial dysostosis, mandibular prognathism, ocular proptosis, short superior lip, scoliosis, and thoracic deformity. DIAGNOSIS Auxiliary examinations lead to the diagnosis of Crouzon syndrome with binocular optic atrophy, myelinated retina nerve fibers, and ametropia in both eyes, and amblyopia in the right eye of the male patient. The molecular genetic analysis confirmed the diagnosis by detecting a heterozygous pathogenic mutation c.1026C > G (C342W) in exon 10 of FGFR2 in both the patient and his mother, but not in any of the unaffected family members. INTERVENTIONS AND OUTCOMES None. LESSONS Our study confirms the presence of optic nerve atrophy in patients with Crouzon syndrome carrying FGFR2 C342W mutations and indicates that MRI and funduscopy should be performed to examine the optic nerve changes for patients with Crouzon syndrome.
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Torii D, Kobayashi T, Horie T, Tsutsui TW. Characterization of dental pulp stem cells isolated from a patient diagnosed with Crouzon syndrome. J Cell Physiol 2021; 236:5317-5324. [PMID: 33386632 PMCID: PMC8048801 DOI: 10.1002/jcp.30241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 11/26/2020] [Accepted: 12/09/2020] [Indexed: 01/09/2023]
Abstract
Stem cells isolated from patients with rare diseases are important to elucidate their pathogeny and mechanisms to enable regenerative therapy. However, the mechanisms underlying tissue regeneration using patient‐derived dental pulp stem cells (DPSCs) are unclear. In this study, we investigated the levels of mRNA and protein expression related to cellular differentiation of Crouzon syndrome patient‐derived DPSCs (CS‐DPSCs) with a Gly338Arg fibroblast growth factor receptor 2 mutation. Multipotency‐related gene expression levels were equivalent in both healthy donor DPSCs and CS‐DPSCs. CS‐DPSCs showed higher osteocalcin (OCN) expression than healthy donor DPSCs. CS‐DPSCs showed a lower increase in the rate of OCN expression among phorbol 12‐myristate 13‐acetate (PMA)‐treated cells than healthy donor DPSCs compared with untreated control cells. CS‐DPSCs showed a lower phosphorylation rate of p38 and p44/42 in PMA‐treated cells than healthy donor DPSCs compared with untreated control cells. These results demonstrate that CS‐DPSCs have higher OCN expression and lower PMA stimulation‐responsiveness than healthy donor DPSCs.
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Affiliation(s)
- Daisuke Torii
- Department of Pharmacology, The Nippon Dental University School of Life Dentistry, Tokyo, Japan
| | - Tomoko Kobayashi
- Research Center for Odontology, The Nippon Dental University School of Life Dentistry, Tokyo, Japan.,Department of Developmental and Regenerative Dentistry, The Nippon Dental University School of Life Dentistry, Tokyo, Japan
| | - Tetsuro Horie
- Research Center for Odontology, The Nippon Dental University School of Life Dentistry, Tokyo, Japan.,Department of Oral Health, The Nippon Dental University School of Life Dentistry, Tokyo, Japan
| | - Takeo W Tsutsui
- Department of Pharmacology, The Nippon Dental University School of Life Dentistry, Tokyo, Japan
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Wu Y, Peng M, Chen J, Suo J, Zou S, Xu Y, Wilkie AOM, Zou W, Mu X, Wang S. A custom-designed panel sequencing study in 201 Chinese patients with craniosynostosis revealed novel variants and distinct mutation spectra. J Genet Genomics 2020; 48:167-171. [PMID: 33547006 DOI: 10.1016/j.jgg.2020.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/05/2020] [Accepted: 11/13/2020] [Indexed: 01/18/2023]
Affiliation(s)
- Yingzhi Wu
- Department of Plastic Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Meifang Peng
- State Key Laboratory of Genetic Engineering at School of Life Sciences, Fudan University, Shanghai 200011, China; CAS Key Laboratory of Computational Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jieyi Chen
- State Key Laboratory of Genetic Engineering at School of Life Sciences, Fudan University, Shanghai 200011, China; CAS Key Laboratory of Computational Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Jinlong Suo
- The State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Sihai Zou
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Chongqing Medical University, Chongqing 401147, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China
| | - Yanqing Xu
- Forest Ridge School of the Sacred Heart, Bellevue, WA 98006, USA
| | - Andrew O M Wilkie
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Weiguo Zou
- The State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiongzheng Mu
- Department of Plastic Surgery, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - Sijia Wang
- CAS Key Laboratory of Computational Biology, CAS-MPG Partner Institute for Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China; Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.
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27
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Role of the fibroblast growth factor 19 in the skeletal system. Life Sci 2020; 265:118804. [PMID: 33245964 DOI: 10.1016/j.lfs.2020.118804] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/10/2020] [Accepted: 11/18/2020] [Indexed: 02/05/2023]
Abstract
Fibroblast growth factor family (FGFs) is a kind of cytokine that plays an important role in growth, development, metabolism and disease. During bone development, multiple FGFs and fibroblast growth factor receptors (FGFRs) play important roles. Previous reports have elucidated the great importance of FGF1, 2, 4, 6, 7, 8, 9, 10, and 18 in bone development, and FGF21 and 23 in bone homeostasis and bone regulation. FGF19 was initially found in the human foetal brain, and its gene location is related to osteoporosis pseudoglioma syndrome. Presently, gene chip detection has repeatedly found that FGF19 shows spatiotemporal specificity of gene expression in bone development and bone-related diseases, as well as differences in the protein level, indicating that FGF19 affects the skeletal system. Considering the current insufficient understanding of FGF19 and its potential function in the skeletal system, this review aims to introduce the background of FGF19 in bone, summarise the research progress of FGF19 in the skeletal system, and discuss the role and therapeutic potential of FGF19 in bone development and bone-related diseases.
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Zhu DL, Tuo XM, Rong Y, Zhang K, Guo Y. Fibroblast growth factor receptor signaling as therapeutic targets in female reproductive system cancers. J Cancer 2020; 11:7264-7275. [PMID: 33193890 PMCID: PMC7646179 DOI: 10.7150/jca.44727] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 07/25/2020] [Indexed: 02/06/2023] Open
Abstract
Ovarian cancer, cervical cancer and endometrial cancer are three relatively common malignant cancers of the female reproductive system. Despite improvements in female genital tract cancer detection and development of new therapeutic approaches, there are still poor prognoses and some do not respond to therapeutic patterns, displaying low survival and high frequency of recurrence. In an era of personalized medicine, novel therapeutic approaches with greater efficacy for these cancers represent an unmet need. One of the actionable signaling pathways is the fibroblast growth factor receptor (FGFR) signaling pathway. Several mutations and alterations in FGF/FGFR family members have been reported in human cancers. FGF/FGFR signaling pathway has become a new target for cancer therapy. This review will summarize the role of FGFR pathway and the genetic alterations of the FGF/FGFR related to female reproductive system cancer. We will describe the available inhibitors of FGFR pathway for potential treatment of female reproductive system cancer. Furthermore, we will discuss FGFR-targeted therapies under clinical development for treatment of female reproductive system cancer.
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Affiliation(s)
- Dong-Li Zhu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Trauma Surgery, Honghui Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China.,Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China, 710054.,Research institute of Xi'an Jiaotong University, Hangzhou, Zhejiang, P. R. China, 311215
| | - Xiao-Mei Tuo
- Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China, 710054
| | - Yu Rong
- Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China, 710054
| | - Kun Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Trauma Surgery, Honghui Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China
| | - Yan Guo
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Trauma Surgery, Honghui Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China.,Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China, 710054
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29
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Feeding, Communication, Hydrocephalus, and Intracranial Hypertension in Patients With Severe FGFR2-Associated Pfeiffer Syndrome. J Craniofac Surg 2020; 32:134-140. [DOI: 10.1097/scs.0000000000007153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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30
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Beare-Stevenson Syndrome With Blepharoptosis as a Complication of Front-Orbital Advancement and Remodeling. J Craniofac Surg 2020; 31:1780-1781. [PMID: 32604297 DOI: 10.1097/scs.0000000000006638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Beare-Stevenson syndrome (BSS) is an extremely rare genetic disorder characterized by a broad range of congenital malformations including craniosynostosis, cutis gyrata, facial deformities, and abnormal genitalia. The authors report a case of a 7 month old female who developed a mechanical ptosis secondary to dermatochalasis as a complication of fronto-orbital advancement and remodeling (FOAR) surgery which subsequently required multiple lid surgeries to reverse ptosis. This is the first report of blepharoptosis correction in a child with BSS as a complication of FOAR.
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Patient-specific and hyper-realistic phantom for an intubation simulator with a replaceable difficult airway of a toddler using 3D printing. Sci Rep 2020; 10:10631. [PMID: 32606342 PMCID: PMC7326915 DOI: 10.1038/s41598-020-67575-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/09/2020] [Indexed: 12/29/2022] Open
Abstract
Difficult tracheal intubation is the third most common respiratory-related adverse co-morbid episode and can lead to death or brain damage. Since difficult tracheal intubation is less frequent, trainees have fewer opportunities to perform difficult tracheal intubation; this leads to the need to practice with a hyper-realistic intubation simulator. However, conventional simulators are expensive, relatively stiffer than the human airway, and have a lack of diversity in terms of disease variations and anatomic reproducibility. Therefore, we proposed the development of a patient-specific and hyper-realistic difficult tracheal intubation simulator using three-dimensional printing technology and silicone moulding and to test the feasibility of patient-specific and hyper-realistic difficult intubation simulation using 3D phantom for the trainee. This difficult tracheal intubation phantom can provide a realistic simulation experience of managing various difficult tracheal intubation cases to trainees, which could minimise unexpected tissue damage before anaesthesia. To achieve a more realistic simulation, a patient-specific phantom was fabricated to mimic human tissue with realistic mouth opening and accurate difficult airway shape. This has great potential for the medical education and training field.
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32
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Ibarra-Arce A, Almaraz-Salinas M, Martínez-Rosas V, Ortiz de Zárate-Alarcón G, Flores-Peña L, Romero-Valdovinos M, Olivo-Díaz A. Clinical study and some molecular features of Mexican patients with syndromic craniosynostosis. Mol Genet Genomic Med 2020; 8:e1266. [PMID: 32510873 PMCID: PMC7434736 DOI: 10.1002/mgg3.1266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 11/21/2019] [Accepted: 03/24/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Craniosynostosis is one of the major genetic disorders affecting 1 in 2,100-2,500 live newborn children. Environmental and genetic factors are involved in the manifestation of this disease. The suggested genetic causes of craniosynostosis are pathogenic variants in FGFR1, FGFR2, FGFR3, and TWIST1 genes. METHODS In order to describe their major clinical characteristics and the presence of pathogenic variants, a sample of 36 Mexican patients with craniosynostosis diagnosed as: Crouzon (OMIM 123,500), Pfeiffer (OMIM 101,600), Apert (OMIM 101,200), Saethre-Chotzen (OMIM 101,400), and Muenke (OMIM 602,849) was analyzed. RESULTS In addition to craniosynostosis, most of the patients presented hypertelorism, midface hypoplasia, and abnormalities in hands and feet. To detect the pathogenic variants p.Pro252Arg FGFR1 (OMIM 136,350), p.Ser252Trp, p.Pro253Arg FGFR2 (OMIM 176,943), p.Pro250Arg, FGFR3 (OMIM 134,934), and p.Gln119Pro TWIST1 (OMIM 601,622), PCR amplification and restriction enzyme digestion were performed. Four and two patients with Apert presented the pathogenic variants p.Ser252Trp and p.Pro253Arg in FGFR2, respectively (with a frequency of 11.1% and 5.5%). The p.Pro250Arg pathogenic variant of FGFR3 was found in a patient with Muenke (with a frequency of 2.8%). The above percentages were calculated with the total number of patients. CONCLUSION The contribution of this work is discreet, since only 4 genes were analyzed and sample size is small. However, this strategy could be improved by sequencing the FGFR1, FGFR2, FGFR3, and TWIST1 genes, to determine different pathogenic variants. On the other hand, it would be important to include other genes, such as TCF12 (OMIM 600,480), MSX2 (OMIM 123,101), RAB23 (OMIM 606,144), and EFNB1 (OMIM 300,035), to determine their participation in craniosynostosis in the Mexican population.
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Affiliation(s)
- Aurora Ibarra-Arce
- Departamento de Biología Molecular e Histocompatibilidad, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
| | - Manuel Almaraz-Salinas
- División de Genética, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
| | - Víctor Martínez-Rosas
- División de Genética, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
| | | | - Laura Flores-Peña
- División de Genética, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
| | - Mirza Romero-Valdovinos
- Departamento de Biología Molecular e Histocompatibilidad, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
| | - Angélica Olivo-Díaz
- Departamento de Biología Molecular e Histocompatibilidad, Hospital General "Dr. Manuel Gea González", Ciudad de México, México
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Khonsari RH, Haber S, Paternoster G, Fauroux B, Morisseau-Durand MP, Cormier-Daire V, Legeai-Mallet L, James S, Hennocq Q, Arnaud E. The influence of fronto-facial monobloc advancement on obstructive sleep apnea: An assessment of 109 syndromic craniosynostoses cases. J Craniomaxillofac Surg 2020; 48:536-547. [DOI: 10.1016/j.jcms.2020.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/29/2020] [Accepted: 04/06/2020] [Indexed: 12/19/2022] Open
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Adapting SureSelect enrichment protocol to the Ion Torrent S5 platform in molecular diagnostics of craniosynostosis. Sci Rep 2020; 10:4159. [PMID: 32139749 PMCID: PMC7058001 DOI: 10.1038/s41598-020-61048-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 02/18/2020] [Indexed: 12/12/2022] Open
Abstract
Obtaining reliable and high fidelity next-generation sequencing (NGS) data requires to choose a suitable sequencing platform and a library preparation approach, which both have their inherent assay-specific limitations. Here, we present the results of successful adaptation of SureSelect hybridisation-based target enrichment protocol for the sequencing on the Ion Torrent S5 platform, which is designed to work preferably with amplicon-based panels. In our study, we applied a custom NGS panel to screen a cohort of 16 unrelated patients affected by premature fusion of the cranial sutures, i.e. craniosynostosis (CS). CS occurs either as an isolated malformation or in a syndromic form, representing a genetically heterogeneous and clinically variable group of disorders. The approach presented here allowed us to achieve high quality NGS data and confirmed molecular diagnosis in 19% of cases, reaching the diagnostic yield similar to some of the published research reports. In conclusion, we demonstrated that an alternative enrichment strategy for library preparations can be successfully applied prior to sequencing on the Ion Torrent S5 platform. Also, we proved that the custom NGS panel designed by us represents a useful and effective tool in the molecular diagnostics of patients with CS.
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35
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Chen L, Marsiglia WM, Chen H, Katigbak J, Erdjument-Bromage H, Kemble DJ, Fu L, Ma J, Sun G, Zhang Y, Liang G, Neubert TA, Li X, Traaseth NJ, Mohammadi M. Molecular basis for receptor tyrosine kinase A-loop tyrosine transphosphorylation. Nat Chem Biol 2020; 16:267-277. [PMID: 31959966 PMCID: PMC7040854 DOI: 10.1038/s41589-019-0455-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 12/05/2019] [Accepted: 12/13/2019] [Indexed: 12/11/2022]
Abstract
A long-standing mystery shrouds the mechanism by which catalytically repressed receptor tyrosine kinase domains accomplish transphosphorylation of activation loop (A-loop) tyrosines. Here we show that this reaction proceeds via an asymmetric complex that is thermodynamically disadvantaged because of an electrostatic repulsion between enzyme and substrate kinases. Under physiological conditions, the energetic gain resulting from ligand-induced dimerization of extracellular domains overcomes this opposing clash, stabilizing the A-loop-transphosphorylating dimer. A unique pathogenic fibroblast growth factor receptor gain-of-function mutation promotes formation of the complex responsible for phosphorylation of A-loop tyrosines by eliminating this repulsive force. We show that asymmetric complex formation induces a more phosphorylatable A-loop conformation in the substrate kinase, which in turn promotes the active state of the enzyme kinase. This explains how quantitative differences in the stability of ligand-induced extracellular dimerization promotes formation of the intracellular A-loop-transphosphorylating asymmetric complex to varying extents, thereby modulating intracellular kinase activity and signaling intensity.
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MESH Headings
- AAA Domain/genetics
- AAA Domain/physiology
- Catalytic Domain
- Dimerization
- Enzyme Activation
- Humans
- Ligands
- Phosphorylation
- Protein Binding
- Protein Conformation
- Protein-Tyrosine Kinases/metabolism
- Protein-Tyrosine Kinases/physiology
- Receptor Protein-Tyrosine Kinases/genetics
- Receptor Protein-Tyrosine Kinases/metabolism
- Receptor Protein-Tyrosine Kinases/physiology
- Receptor, Fibroblast Growth Factor, Type 1/genetics
- Receptor, Fibroblast Growth Factor, Type 1/metabolism
- Receptor, Fibroblast Growth Factor, Type 2/genetics
- Receptor, Fibroblast Growth Factor, Type 2/metabolism
- Receptor, Fibroblast Growth Factor, Type 3/genetics
- Receptor, Fibroblast Growth Factor, Type 3/metabolism
- Signal Transduction
- Structure-Activity Relationship
- Tyrosine/chemistry
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Affiliation(s)
- Lingfeng Chen
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | | | - Huaibin Chen
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Joseph Katigbak
- Department of Chemistry, New York University, New York, NY, USA
| | - Hediye Erdjument-Bromage
- Department of Cell Biology and Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, NY, USA
| | - David J Kemble
- Department of Cell and Molecular Biology, University of Rhode Island, Kingston, RI, USA
| | - Lili Fu
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jinghong Ma
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA
| | - Gongqin Sun
- Department of Cell and Molecular Biology, University of Rhode Island, Kingston, RI, USA
| | - Yingkai Zhang
- Department of Chemistry, New York University, New York, NY, USA
| | - Guang Liang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Thomas A Neubert
- Department of Cell Biology and Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, NY, USA
| | - Xiaokun Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | | | - Moosa Mohammadi
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY, USA.
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Yang J, Tao T, Liu H, Hu ZL. Inherited FGFR2 mutation in a Chinese patient with Crouzon syndrome and luxation of bulbus oculi provoked by trauma: a case report. BMC Ophthalmol 2019; 19:209. [PMID: 31640617 PMCID: PMC6805391 DOI: 10.1186/s12886-019-1217-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/01/2019] [Indexed: 12/18/2022] Open
Abstract
Background Crouzon syndrome (CS), which results from fibroblast growth factor receptor 2 mutations, is associated with craniosynostosis, exophthalmos, and other symptoms. Herein, we report the genetic abnormalities detected in a Chinese family with autosomal dominant CS, combined with luxation of the eyeball. This luxation was a consequence of the trauma to the shallow orbits. Case presentation The proband was a 4-year-old boy. He accidentally fell, following which luxation of the bulbus oculi occurred immediately. Computed tomography and magnetic resonance imaging clearly revealed ocular proptosis. Upon physical examination, the proband, his father, and grandfather had ocular proptosis, shallow orbits, and mid-face hypoplasia. However, their hands and feet were clinically normal. Genomic DNA was extracted from the peripheral blood through a polymerase chain reaction performed for the target sequence. Genetic assessments revealed a heterozygous missense mutation (c.1012G > C, p.G338R) in exon 10 of the human FGFR2, cosegregated with the disease phenotype in this family. These findings confirmed the diagnosis of CS. Discussion CS is usually caused by FGFR2 mutations. While there are a few reports of luxation of the bulbus oculi in Chinese families with CS, the ocular proptosis, shallow orbits, combined with luxation of eyeball after trauma observed in this patient were particularly interesting. Our findings enhance the current knowledge of traumatic luxation concomitant with CS.
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Affiliation(s)
- Ji Yang
- Department of Ophthalmology, Second people's hospital of Yunnan province, Kunming, 650000, China. .,The eye disease clinical medical research center of Yunnan province, Kunming, 650000, China. .,The eye disease clinical medical center of Yunnan province, Kunming, 650000, China.
| | - Tao Tao
- Department of Ophthalmology, Second people's hospital of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical research center of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical center of Yunnan province, Kunming, 650000, China
| | - Hai Liu
- Department of Ophthalmology, Second people's hospital of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical research center of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical center of Yunnan province, Kunming, 650000, China
| | - Zhu-Lin Hu
- Department of Ophthalmology, Second people's hospital of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical research center of Yunnan province, Kunming, 650000, China.,The eye disease clinical medical center of Yunnan province, Kunming, 650000, China
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37
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Yilmaz E, Mihci E, Nur B, Alper ÖM, Taçoy Ş. Recent Advances in Craniosynostosis. Pediatr Neurol 2019; 99:7-15. [PMID: 31421914 DOI: 10.1016/j.pediatrneurol.2019.01.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 12/25/2018] [Accepted: 01/24/2019] [Indexed: 12/27/2022]
Abstract
Craniosynostosis is a pathologic craniofacial disorder and is defined as the premature fusion of one or more cranial (calvarial) sutures. Cranial sutures are fibrous joints consisting of nonossified mesenchymal cells that play an important role in the development of healthy craniofacial skeletons. Early fusion of these sutures results in incomplete brain development that may lead to complications of several severe medical conditions including seizures, brain damage, mental delay, complex deformities, strabismus, and visual and breathing problems. As a congenital disease, craniosynostosis has a heterogeneous origin that can be affected by genetic and epigenetic alterations, teratogens, and environmental factors and make the syndrome highly complex. To date, approximately 200 syndromes have been linked to craniosynostosis. In addition to being part of a syndrome, craniosynostosis can be nonsyndromic, formed without any additional anomalies. More than 50 nuclear genes that relate to craniosynostosis have been identified. Besides genetic factors, epigenetic factors like microRNAs and mechanical forces also play important roles in suture fusion. As craniosynostosis is a multifactorial disorder, evaluating the craniosynostosis syndrome requires and depends on all the information obtained from clinical findings, genetic analysis, epigenetic or environmental factors, or gene modulators. In this review, we will focus on embryologic and genetic studies, as well as epigenetic and environmental studies. We will discuss published studies and correlate the findings with unknown aspects of craniofacial disorders.
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Affiliation(s)
- Elanur Yilmaz
- Department of Medical Biology and Genetics, Akdeniz University Medical School, Antalya, Turkey
| | - Ercan Mihci
- Department of Pediatric Genetics, Akdeniz University Medical School, Antalya, Turkey
| | - Banu Nur
- Department of Pediatric Genetics, Akdeniz University Medical School, Antalya, Turkey
| | - Özgül M Alper
- Department of Medical Biology and Genetics, Akdeniz University Medical School, Antalya, Turkey.
| | - Şükran Taçoy
- Department of Pediatric Genetics, Akdeniz University Medical School, Antalya, Turkey
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Wang J, Liu S, Li J, Yi Z. The role of the fibroblast growth factor family in bone-related diseases. Chem Biol Drug Des 2019; 94:1740-1749. [PMID: 31260189 DOI: 10.1111/cbdd.13588] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/25/2019] [Accepted: 06/17/2019] [Indexed: 12/16/2022]
Abstract
Fibroblast growth factor (FGF) family members are important regulators of cell growth, proliferation, differentiation, and regeneration. The abnormal expression of certain FGF family members can cause skeletal diseases, including achondroplasia, craniosynostosis syndrome, osteoarthritis, and Kashin-Beck disease. Accumulating evidence shows that FGFs play a crucial role in the growth and proliferation of bone and in the pathogenesis of certain bone-related diseases. Here, we review the involvement of FGFs in bone-related processes and diseases; FGF1 in the differentiation of human bone marrow mesenchymal stem cells and fracture repair; FGF2, FGF9, and FGF18 in osteoarthritis; FGF6 in bone and muscle injury; FGF8 in osteoarthritis and Kashin-Beck disease; and FGF21 and FGF23 on bone regulation. These findings indicate that FGFs are targets for novel therapeutic interventions for bone-related diseases.
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Affiliation(s)
- Jicheng Wang
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, Xi'an, China.,Xi'an Medical University, Xi'an, China
| | - Shizhang Liu
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Jingyuan Li
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Zhi Yi
- Department of Orthopaedics, Shaanxi Provincial People's Hospital, Xi'an, China
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Luong ALT, Ho TT, Hoang H, Nguyen TQ, Ho TC, Tran PD, Hoang TT, Nguyen NT, Chu HH. Detection of G338R FGFR2 mutation in a Vietnamese patient with Crouzon syndrome. Biomed Rep 2019; 10:107-112. [PMID: 30719288 PMCID: PMC6350211 DOI: 10.3892/br.2019.1181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/31/2018] [Indexed: 12/18/2022] Open
Abstract
Crouzon syndrome is a rare autosomal dominant genetic disorder, which causes the premature fusion of the cranial suture. Fibroblast growth factor receptor 2 (FGFR2) mutations are well-known causatives of Crouzon syndrome. The current study aimed to assess the FGFR2 gene associated with Crouzon syndrome in a Vietnamese family of three generations and to characterize their associated clinical features. The family included in the present study underwent complete clinical examination. A patient was clinically examined and presented with typical features of Crouzon syndrome including craniosynostosis, shallow orbits, ocular proptosis and midface hypoplasia. However the patient had normal hands and feet, a normal hearing ability and normal intelligence. Genomic DNA collected from all family members (except from a 16 week-old-foetus) and 200 unrelated control subjects from the same population was extracted from leukocytes obtained from peripheral blood samples. Genomic DNA was extracted from the 16-week-old foetus via the amniotic fluid of the mother. All coding sequences of FGFR2 were amplified via polymerase chain reaction and directly sequenced. A heterozygous FGFR2 missense mutation (c.1012G>C, p.G338R) in exon 10 was identified in the patient with Crouzon but not in other family members, the 16 week-old-foetus or the controls. This mutation was therefore determined to be the causative agent of Crouzon syndrome. In addition, a novel heterozygous silent mutation (c.1164C>T, p.I388I) in exon 11 of the FGFR2 gene was identified in the patient with Crouzon, his mother and the 16-week-old fetus, but not in other family members. The mutation in exon 10 of FGRF2 was confirmed via restriction-enzyme digestion. The gain of the BsoBI site confirmed the FGFR2 mutation in exon 10 of the patient with Crouzon. This molecular finding may provide useful information to aid clinicians in the diagnosis of Crouzon syndrome and may also aid early prenatal diagnoses.
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Affiliation(s)
- Anh Lan Thi Luong
- Hanoi Medical University, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam.,Hanoi Medical University Hospital, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam
| | - Thuong Thi Ho
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Cau Giay, Ha Noi 10000, Vietnam
| | - Ha Hoang
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Cau Giay, Ha Noi 10000, Vietnam
| | - Trung Quang Nguyen
- Hanoi Medical University, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam.,Hanoi Medical University Hospital, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam
| | - Tu Cam Ho
- Hanoi Medical University, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam
| | - Phan Duc Tran
- Hanoi Medical University, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam.,Hanoi Medical University Hospital, Kim Lien, Đong Đa, Ha Noi 10000, Vietnam
| | - Thuy Thi Hoang
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Cau Giay, Ha Noi 10000, Vietnam
| | - Nam Trung Nguyen
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Cau Giay, Ha Noi 10000, Vietnam.,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi 10000, Vietnam
| | - Hoang Ha Chu
- National Key Laboratory of Gene Technology, Institute of Biotechnology, Cau Giay, Ha Noi 10000, Vietnam.,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Cau Giay, Ha Noi 10000, Vietnam
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Cioppi F, Casamonti E, Krausz C. Age-Dependent De Novo Mutations During Spermatogenesis and Their Consequences. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1166:29-46. [DOI: 10.1007/978-3-030-21664-1_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Abstract
In 1993, Jabs et al. were the first to describe a genetic origin of craniosynostosis. Since this discovery, the genetic causes of the most common syndromes have been described. In 2015, a total of 57 human genes were reported for which there had been evidence that mutations were causally related to craniosynostosis. Facilitated by rapid technological developments, many others have been identified since then. Reviewing the literature, we characterize the most common craniosynostosis syndromes followed by a description of the novel causes that were identified between January 2015 and December 2017.
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Affiliation(s)
- Jacqueline A C Goos
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Irene M J Mathijssen
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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Fan J, Li Y, Jia R, Fan X. An inherited FGFR2 mutation increased osteogenesis gene expression and result in Crouzon syndrome. BMC MEDICAL GENETICS 2018; 19:91. [PMID: 29848297 PMCID: PMC5975660 DOI: 10.1186/s12881-018-0607-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/18/2018] [Indexed: 11/19/2022]
Abstract
Background FGFR2 encodes a fibroblast growth factor receptor whose mutations are responsible for the Crouzon syndrome, involving craniosynostosis and facial dysostosis with shallow orbits. However, few reports are available quantifying the orbital volume of Crouzon syndrome and there was little direct evidence to show FGFR2 mutation actually influencing orbital morphology. Methods Ten Crouzon syndrome patients underwent a standard ophthalmologic assessment. Morphology study was carried out based on 3-dimensional computed tomography scan to calculate orbital volume. Genomic DNA was extracted from peripheral blood leukocytes of the patients and genomic screening of FGFR2. A three-dimensional computer model was used to analyse the structural positioning of the mutation site that was predicted possible impact on functional of FGFR2 protein. Real-time PCR was performed to analyse the expression of bone maker gene. Results We describe a FGFR2 mutation (p.G338R, c.1012G > C) in a Chinese family with Crouzon syndrome. Computational analysis showed the mutate protein obviously changes in the local spatial structure compared with wild-type FGFR2. The expression of osteocalcin and alkaline phosphatase two osteoblast specific genes significantly increased in orbital bone directly from patient compared to normal individual, which may lead to facial dysostosis. This is compatible with the shallow and round orbits in our Crouzon syndrome patient. Conclusions Our study further identified G338R FGFR2 mutation (c1012G > C) lead to inherited Crouzon syndrome. Thus, early intervention, both medically and surgically, as well as disciplined by a multiple interdisciplinary teams are crucial to the management of this disorder.
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Affiliation(s)
- Jiayan Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Yinwei Li
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Renbing Jia
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, People's Republic of China. .,Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China.
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Chinese patients with p.Ala172Phe-related Pfeiffer syndrome: a case and literature review. Clin Dysmorphol 2018; 27:84-87. [PMID: 29782338 DOI: 10.1097/mcd.0000000000000225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Apostolopoulou D, Kaxira OS, Hatzaki A, Panagopoulos KP, Alexandrou K, Stratoudakis A, Kollia P, Aleporou V. Genetic Analysis of Syndromic and Nonsyndromic Patients With Craniosynostosis Identifies Novel Mutations in the TWIST1 and EFNB1 Genes. Cleft Palate Craniofac J 2018; 55:1092-1102. [PMID: 29561715 DOI: 10.1177/1055665618760412] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Craniosynostosis, the premature fusion of cranial sutures, is usually divided into 2 major categories: syndromic and nonsyndromic. Mutations in the FGFR1, FGFR2, FGFR3, TWIST1, and EFNB1 genes cause the common craniosynostosis syndromes Muenke, Crouzon and Crouzon with acanthosis nigricans, Apert, Pfeiffer, Saethre-Chotzen, and Craniofrontonasal. Overlapping features among craniosynostosis syndromes, phenotypic heterogeneity even within the same syndrome, especially in the case of Muenke syndrome, and inadequate clinical evaluation can lead to misdiagnosis, which molecular testing can help clarify. OBJECTIVE The aim of this study is to investigate the underlying genetic cause in 46 patients with syndromic or nonsyndromic craniosynostosis by direct sequencing and/or microdeletion/microduplication analysis of the FGFR1-3, TWIST1, and EFNB1 genes. RESULTS Genetic analysis identified 3 novel mutations, c.413T>C - p.(Leu138Pro) [p.(L138P)] in TWIST1, the previously reported c.373G>A - p.(Glu125Lys) [p.(E125K)], and c.717dupA - p.(Leu240IlefsTer79) [p.(L240fs)] mutation in EFNB1 gene as well as 6 previously known mutations and a heterozygous TWIST1 gene deletion. The 2 novel mutations within EFNB1 gene arose de novo, but the novel mutation p.(L138P) within TWIST1 gene was inherited from the patient's father, who was found to be mosaic for the mutation. To our knowledge, this is the first case of mosaicism described for TWIST1 gene. CONCLUSIONS The contribution of molecular genetic analysis to the diagnosis of patients with syndromic craniosynostosis was useful because some were originally misdiagnosed. Conversely, thorough clinical evaluation can guide molecular testing and result in a correct diagnosis.
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Affiliation(s)
- Despina Apostolopoulou
- Department of Genetics and Biotechnology, School of Physical Sciences, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece.,AlfaLAB Molecular Biology and Cytogenetics Centre, Hygeia Group of Hospitals, Athens, Greece.,Hellenic Craniofacial Center, Athens, Greece
| | - Olga S Kaxira
- "MITERA" General, Maternity and Children Hospital, Athens, Greece
| | - Angeliki Hatzaki
- AlfaLAB Molecular Biology and Cytogenetics Centre, Hygeia Group of Hospitals, Athens, Greece
| | | | | | | | - Panagoula Kollia
- Department of Genetics and Biotechnology, School of Physical Sciences, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Vassiliki Aleporou
- Department of Genetics and Biotechnology, School of Physical Sciences, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
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Barik M, Bajpai M, Malhotra A, Samantaray JC, Dwivedi S, Das S. Genome-Wide Association Study in Craniosynostosis Condition Using Innovative Systematic Bioinformatic Analysis Tools and Techniques: Future Prospective and Clinical Practice. J Pediatr Neurosci 2018; 13:170-175. [PMID: 30090130 PMCID: PMC6057197 DOI: 10.4103/jpn.jpn_71_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background: Craniosynostosis (CS) conditions are included with the premature fusion of one or more multiple cranial sutures. As the second leading and most common craniofacial anomaly and orofacial clefts globally. Syndromic and nonsyndromic CS (NSCS) occur as a part of a genetic syndrome unlike Apert, Crouzon, Pfeiffer, Muenke, and Saethre–Chotzen syndromes. Approximately, 90% of the cases of CS arises from NSCS group and it is now a great challenge for the researcher and neurosurgeon for Indian-origin children, a great burden worldwide. Material and Methods: Study design: Prospective study of analysis sequence pattern on CS and NSCS from January 2007 to 2018 was carried out. Inclusion criteria: Diagnosed cases in syndromic and NSCS patients between 3 months and 14 years of age either preoperative or postoperative were included in the study of both groups (syndromic and NSCS). Exclusion criteria: Patients with primary microcephaly (secondary CS), postural plagiocephaly, incomplete data, no visual perception, and who were lost to follow-up, and who had no interest to participate the study were excluded from the study. Bioinformatic analysis: We have performed systematic bioinformatic analysis for all responsible genes by combining with using through the GeneDecks, Gene Runner, DAVID, and STRING databases. Genes testing: FGF family genes, MSX genes, such as Irf6, TP63, Dlx2, Dlx5, Pax3, Pax9, Bmp4, Tgf-beta2, and Tgf-beta3 were found to be involved in Cleft lip and cleft palate (CL/P), and Fgfr2, Fgfr1, Fgfr3, and TWIST, MSX, MSX1, 2 were found to be involved in both the groups of CS (SCS + NSCS). Results: FGFR, MSX, Irf6, TP63, Dlx2, Dlx5, Pax3, Pax9, Bmp4, Tgf-beta2, and Tgf-beta3 demonstrated and find out that in CL/P, and Fgfr2, Fgfr1, Fgfr3, and Twist1 had accurate sequence data with more than accuracy of 95% reported with proper order with additional anomalies CS through newly developed tools. Conclusion: Newly developed techniques of GeneDecks, Gene Runner, DAVID, and STRING databases gave better picture to analyze the larger population, patients (SCS + NSCS) with complex genetic, maternal, parental age, environmental, and stochastic factors contributing to NSCS networking, signaling, and pathways involvement. This bioinformatic tools analyzed better prediction of CS and NSCS sequences guiding us the newer invention modalities of pattern of screening and further development of recent future application.
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Affiliation(s)
- Mayadhar Barik
- Department of Paediatric Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Minu Bajpai
- Department of Paediatric Surgery, All India Institute of Medical Sciences, New Delhi, India
| | - Arun Malhotra
- Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Jyotish C Samantaray
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sadananda Dwivedi
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Sambhunath Das
- Department of Cardiac Anaesthesia, All India Institute of Medical Sciences, New Delhi, India
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Freitas ECLBD, Nascimento SRD, de Mello MP, Gil-da-Silva-Lopes VL. Q289P Mutation in FGFR2 Gene Causes Saethre-Chotzen Syndrome: Some Considerations About Familial Heterogeneity. Cleft Palate Craniofac J 2017; 43:142-7. [PMID: 16526917 DOI: 10.1597/04-155.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
ObjectiveTo describe the first report on a three-generation family presenting typical features of Saethre-Chotzen syndrome, in which the Q289P mutation in the FGFR2 gene was detected.DesignDysmorphological evaluation was performed by a clinical geneticist. Direct sequencing of the polymerase chain reaction-amplified coding region of TWIST and screening for the P250R mutation in the FGFR3 gene were performed. Exons IIIa and IIIc of FGFR2 were sequenced also. The mutation was confirmed by both restriction-enzyme digestion and allelic-specific polymerase chain reaction.ResultsNeither TWIST gene analysis nor analysis of the P250R mutation on gene FGFR3 showed mutation within the coding sequence. A nucleotide change from CAG to CCG in exon IIIa of the FGFR2 gene that caused a Q289P mutation was detected, although exon IIIc in the propositus was normal. These same results were detected in his mother, but no other members of the kindred presented clinical features consistent with Saethre-Chotzen syndrome.ConclusionsThis mutation was previously reported in individuals with Crouzon and Jackson-Weiss syndromes. The FGFR2 mutation in the family with Saethre-Chotzen syndrome herein reported reinforces the idea of an interaction among TWIST and FGFR genes during development. Absence of the Q289P mutation in some affected individuals in this family is discussed.
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Azoury SC, Reddy S, Shukla V, Deng CX. Fibroblast Growth Factor Receptor 2 ( FGFR2) Mutation Related Syndromic Craniosynostosis. Int J Biol Sci 2017; 13:1479-1488. [PMID: 29230096 PMCID: PMC5723914 DOI: 10.7150/ijbs.22373] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 10/01/2017] [Indexed: 12/30/2022] Open
Abstract
Craniosynostosis results from the premature fusion of cranial sutures, with an incidence of 1 in 2,100-2,500 live births. The majority of cases are non-syndromic and involve single suture fusion, whereas syndromic cases often involve complex multiple suture fusion. The fibroblast growth factor receptor 2 (FGFR2) gene is perhaps the most extensively studied gene that is mutated in various craniosynostotic syndromes including Crouzon, Apert, Pfeiffer, Antley-Bixler, Beare-Stevenson cutis gyrata, Jackson-Weiss, Bent Bone Dysplasia, and Seathre-Chotzen-like syndromes. The majority of these mutations are missense mutations that result in constitutive activation of the receptor and downstream molecular pathways. Treatment involves a multidisciplinary approach with ultimate surgical fixation of the cranial deformity to prevent further sequelae. Understanding the molecular mechanisms has allowed for the investigation of different therapeutic agents that can potentially be used to prevent the disorders. Further research efforts are need to better understand screening and effective methods of early intervention and prevention. Herein, the authors provide a comprehensive update on FGFR2-related syndromic craniosynostosis.
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Affiliation(s)
- Saïd C. Azoury
- Department of Surgery, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Sashank Reddy
- Department of Plastic and Reconstructive Surgery, The Johns Hopkins Hospital, Baltimore, MD, USA
| | - Vivek Shukla
- TGIB, NCI, National Institutes of Health, Bethesda, MD, USA
| | - Chu-Xia Deng
- Faculty of Health Sciences, University of Macau, Macau SAR, China
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Lin Y, Gao H, Ai S, Eswarakumar JV, Chen C, Zhu Y, Li T, Liu B, Liu X, Luo L, Jiang H, Li Y, Liang X, Jin C, Huang X, Lu L. C278F mutation in FGFR2 gene causes two different types of syndromic craniosynostosis in two Chinese patients. Mol Med Rep 2017; 16:5333-5337. [PMID: 28849010 PMCID: PMC5647065 DOI: 10.3892/mmr.2017.7248] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Accepted: 05/24/2017] [Indexed: 12/30/2022] Open
Abstract
The current study was performed with aim to investigate the fibroblast growth factor receptor 2 (FGFR2) gene in two Chinese families with two different forms of syndromic craniosynostosis, and to characterize their associated clinical features. Two families underwent complete ophthalmic examinations, and two patients from each family were diagnosed with craniosynostosis. Genomic DNA was extracted from leukocytes of peripheral blood collected from these two families and from 200 unrelated subjects within the same population as controls. Exons 8 and 10 of the FGFR2 gene were amplified by polymerase chain reaction and directly sequenced. Ophthalmic examinations of the two patients revealed shallow orbits and ocular proptosis, accompanied by midface hypoplasia and craniosynostosis. Case 1 had retinal detachment, abnormal limbs and hands, while case 2 exhibited normal hands and feet upon clinical examination. A heterozygous FGFR2 missense mutation c.833G>T (C278F) in exon 8 was identified in these two patients, but not in unaffected family members or the normal controls. Although FGFR2 gene mutations and polymorphisms have been studied in various ethnic groups, we report a mutation of FGFR2 in two different Chinese patients with two different types of syndromic craniosynostosis.
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Affiliation(s)
- Ying Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Hongbin Gao
- Guangdong Laboratory Animals Monitoring Institute, Key Provincial Laboratory of Guangdong Laboratory Animals, Guangzhou, Guangdong 510663, P.R. China
- Department of Toxicology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Siming Ai
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Jacob V.P. Eswarakumar
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Chuan Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Yi Zhu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Tao Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Bingqian Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xialin Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Lixia Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Hongye Jiang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510000, P.R. China
| | - Yonghao Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xiaoling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Chenjin Jin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Xinhua Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Lin Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
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Machado RA, Ferreira SB, Martins L, Ribeiro MM, Martelli DRB, Coletta RD, Aguiar MJB, Martelli-Júnior H. A novel heterozygous mutation in FGFR2 gene causing Pfeiffer syndrome. Am J Med Genet A 2017; 173:2838-2843. [PMID: 28815901 DOI: 10.1002/ajmg.a.38389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/25/2017] [Accepted: 07/14/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Renato A Machado
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Shirlene B Ferreira
- Health Science Program, State University of Montes Claros, Unimontes, Minas Gerais State, Brazil
| | - Luciane Martins
- Division of Periodontics, Department of Prosthodontics and Periodontics, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Mariana M Ribeiro
- Department of Morphology, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Daniella R B Martelli
- Stomatology Clinic, Dental School, State University of Montes Claros, Montes Claros, Minas Gerais, Brazil
| | - Ricardo D Coletta
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Marcos J B Aguiar
- Special Genetics Service, Hospital of the Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Hercílio Martelli-Júnior
- Stomatology Clinic, Dental School, State University of Montes Claros, Montes Claros, Minas Gerais, Brazil.,Center for Rehabilitation of Craniofacial Anomalies, Dental School, University of José Rosário Vellano, Belo Horizonte, Minas Gerais, Brazil
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Agerholm JS, McEvoy FJ, Heegaard S, Charlier C, Jagannathan V, Drögemüller C. A de novo missense mutation of FGFR2 causes facial dysplasia syndrome in Holstein cattle. BMC Genet 2017; 18:74. [PMID: 28768473 PMCID: PMC5541750 DOI: 10.1186/s12863-017-0541-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/27/2017] [Indexed: 01/17/2023] Open
Abstract
Background Surveillance for bovine genetic diseases in Denmark identified a hitherto unreported congenital syndrome occurring among progeny of a Holstein sire used for artificial breeding. A genetic aetiology due to a dominant inheritance with incomplete penetrance or a mosaic germline mutation was suspected as all recorded cases were progeny of the same sire. Detailed investigations were performed to characterize the syndrome and to reveal its cause. Results Seven malformed calves were submitted examination. All cases shared a common morphology with the most striking lesions being severe facial dysplasia and complete prolapse of the eyes. Consequently the syndrome was named facial dysplasia syndrome (FDS). Furthermore, extensive brain malformations, including microencephaly, hydrocephalus, lobation of the cerebral hemispheres and compression of the brain were present. Subsequent data analysis of progeny of the sire revealed that around 0.5% of his offspring suffered from FDS. High density single nucleotide polymorphism (SNP) genotyping data of the seven cases and their parents were used to map the defect in the bovine genome. Significant genetic linkage was obtained for three regions, including chromosome 26 where whole genome sequencing of a case-parent trio revealed two de novo variants perfectly associated with the disease: an intronic SNP in the DMBT1 gene and a single non-synonymous variant in the FGFR2 gene. This FGFR2 missense variant (c.927G>T) affects a gene encoding a member of the fibroblast growth factor receptor family, where amino acid sequence is highly conserved between members and across species. It is predicted to change an evolutionary conserved tryptophan into a cysteine residue (p.Trp309Cys). Both variant alleles were proven to result from de novo mutation events in the germline of the sire. Conclusions FDS is a novel genetic disorder of Holstein cattle. Mutations in the human FGFR2 gene are associated with various dominant inherited craniofacial dysostosis syndromes. Given the phenotypic similarities in FDS affected calves, the genetic mapping and absence of further high impact variants in the critical genome regions, it is highly likely that the missense mutation in the FGFR2 gene caused the FDS phenotype in a dominant mode of inheritance. Electronic supplementary material The online version of this article (doi:10.1186/s12863-017-0541-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jørgen S Agerholm
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlægevej 16, 1870, Frederiksberg C, DK, Denmark.
| | - Fintan J McEvoy
- Department of Clinical Veterinary Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlægevej 16, 1870, Frederiksberg C, DK, Denmark
| | - Steffen Heegaard
- Department of Pathology, Rigshospitalet, University of Copenhagen, Frederik V's Vej 11, 2100, Copenhagen Ø, DK, Denmark.,Department of Ophthalmology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, 2100, Copenhagen Ø, DK, Denmark
| | - Carole Charlier
- Unit of Animal Genomics, GIGA-R & Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
| | - Vidhya Jagannathan
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland
| | - Cord Drögemüller
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, 3001, Bern, Switzerland
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