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Kitic N, Chapron T, Metge-Galatoire F, Chehaibou I, Caputo G, Abdelmassih Y. EARLY-ONSET OF FAMILIAL EXUDATIVE VITREORETINOPATHY: Clinical Characteristics, Management, and Outcomes. Retina 2024; 44:669-679. [PMID: 37973048 DOI: 10.1097/iae.0000000000004005] [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: 11/19/2023]
Abstract
PURPOSE To describe the clinical characteristics, management, and outcomes of toddlers (under the age of 3) diagnosed with familial exudative vitreoretinopathy. METHODS In this retrospective study, patients diagnosed with familial exudative vitreoretinopathy before the age of 3 were included. Presenting characteristics, genetic testing, management, and outcomes were collected. RESULTS A total of 54 patients (108 eyes) with a mean age at diagnosis of 10.9 ± 2.6 months were included. Poor visual behavior (33%) and strabismus (26%) were the most common presenting symptoms, whereas screening only represented 11%. About half of included patients had a severe disease (stages 4 and 5). Genetic testing was positive in 40.7% of patients with 24% having a family history of familial exudative vitreoretinopathy. LRP5 was the most prevalent mutation (54.5%).Surgery was performed in 44.4% of eyes and was successful in 69.8% of cases. Failure exclusively occurred in eyes with severe stages. Among eyes evaluated for visual acuity (72 eyes), most (76.4%) had a vision of hand motion or better. CONCLUSION Familial exudative vitreoretinopathy tended to be worse with earlier age at diagnosis, subsequently affecting the prognosis. Surgical intervention was common and primarily included lens-sparing vitrectomy and combined lensectomy and vitrectomy. Surgical success hinged on the stage of the disease.
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Affiliation(s)
- Nicolas Kitic
- Pediatric Ophthalmology Department, Rothschild Foundation Hospital, Paris, France; and
- Sorbonne Universités, Paris, France
| | - Thibaut Chapron
- Pediatric Ophthalmology Department, Rothschild Foundation Hospital, Paris, France; and
| | | | - Ismael Chehaibou
- Pediatric Ophthalmology Department, Rothschild Foundation Hospital, Paris, France; and
| | - Georges Caputo
- Pediatric Ophthalmology Department, Rothschild Foundation Hospital, Paris, France; and
| | - Youssef Abdelmassih
- Pediatric Ophthalmology Department, Rothschild Foundation Hospital, Paris, France; and
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Zhang S, Yong HM, Zou G, Ma MJ, Rui X, Yang SY, Sheng XL. De novel heterozygous copy number deletion on 7q31.31-7q31.32 involving TSPAN12 gene with familial exudative vitreoretinopathy in a Chinese family. Int J Ophthalmol 2023; 16:1952-1961. [PMID: 38111929 PMCID: PMC10700080 DOI: 10.18240/ijo.2023.12.06] [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: 07/28/2023] [Accepted: 10/30/2023] [Indexed: 12/20/2023] Open
Abstract
AIM To investigate the genetic and clinical characteristics of patients with a large heterozygous copy number deletion on 7q31.31-7q31.32. METHODS A family with familial exudative vitreoretinopathy (FEVR) phenotype was included in the study. Whole-exome sequencing (WES) was initially used to locate copy number variations (CNVs) on 7q31.31-31.32, but failed to detect the precise breakpoint. The long-read sequencing, Oxford Nanopore sequencing Technology (ONT) was used to get the accurate breakpoint which is verified by quantitative real-time polymerase chain reaction (QPCR) and Sanger Sequencing. RESULTS The proband, along with her father and younger brother, were found to have a heterozygous 4.5 Mb CNV deletion located on 7q31.31-31.32, which included the FEVR-related gene TSPAN12. The specific deletion was confirmed as del(7)(q31.31q31.32)chr7:g.119451239_123956818del. The proband exhibited a phase 2A FEVR phenotype, characterized by a falciform retinal fold, macular dragging, and peripheral neovascularization with leaking of fluorescence. These symptoms led to a significant decrease in visual acuity in both eyes. On the other hand, the affected father and younger brother showed a milder phenotype. CONCLUSION The heterozygous CNV deletion located on 7q31.31-7q31.32 is associated with the FEVR phenotype. The use of long-read sequencing techniques is essential for accurate molecular diagnosis of genetic disorders.
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Affiliation(s)
- Shuang Zhang
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Hai-Ming Yong
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Gang Zou
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Mei-Jiao Ma
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Xue Rui
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Shang-Ying Yang
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
| | - Xun-Lun Sheng
- People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Ningxia Eye Hospital, Ningxia Clinical Research Center on Diseases of Blindness in Eye, Yinchuan 750001, Ningxia Hui Autonomous Region, China
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Hu Y, Fan Z, Zhao X, Correa VSMC, Wu Z, Lu X, Zeng X, Chen L, Yu Z, Zheng L, He J, Zhang G. Refractive Status and Biometric Characteristics of Children With Familial Exudative Vitreoretinopathy. Invest Ophthalmol Vis Sci 2023; 64:27. [PMID: 37850946 PMCID: PMC10593135 DOI: 10.1167/iovs.64.13.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/06/2023] [Indexed: 10/19/2023] Open
Abstract
Purpose To compare biometric characteristics between patients with early-stage familial exudative vitreoretinopathy (FEVR) and healthy controls. Methods This case-control study included 50 FEVR eyes in stage 1-2 and 50 control eyes matched by age, gender and spherical equivalent (SE). Biometric parameters including axial length (AL), white-to-white diameter (WTW), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), pupil diameter, vitreous chamber depth, anterior and posterior corneal surface curvature radius (ACR and PCR), anterior lens surface curvature radius (ALR) and posterior lens surface curvature radius were measured using IOLMaster 700 and compared between cases and controls using paired t-test. Correlations between SE and biometric measures were assessed using Pearson correlation coefficient (r) in cases and controls. Results Both FEVR cases and matched controls had a mean age of 7.6 years, 48% female and mean SE of -5.3 D (80% myopia). Compared to controls, FEVR eyes had smaller AL (P = 0.009), WTW (P = 0.001), ACD (P < 0.001), and ALR (P = 0.03), but larger CCT (P = 0.02) and LT (P = 0.01). In FEVR eyes, SE was negatively correlated with AL (r = -0.79, P < 0.001), positively correlated with ACR (r = 0.29, P = 0.04) and PCR (r = 0.33, P = 0.02), whereas in controls, SE was negatively correlated with AL (r = -0.82, P < 0.001) and LT (r = -0.34, P = 0.02), positively correlated with ALR (r = 0.29, P = 0.04). Conclusions Patients at early stage of FEVR exhibited a unique eye morphology resembling ocular development arrest, which may help to develop screening and early detection tools for FEVR. In FEVR patients, myopia is very prevalent and significantly associated with corneal curvature increase.
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Affiliation(s)
- Yarou Hu
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Zixin Fan
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Xinyu Zhao
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Victor S. M. C. Correa
- Retina Service, Ines and Fred Yeatts Retina Research Laboratory, Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, United States
| | - Zhenquan Wu
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Xiaofeng Lu
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Xianlu Zeng
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Laijiao Chen
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Zhen Yu
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Lei Zheng
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Jicang He
- New England College of Optometry, Boston, Massachusetts, United States
| | - Guoming Zhang
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
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Mao J, Chen Y, Fang Y, Shao Y, Xiang Z, Li H, Zhao S, Chen Y, Shen L. Clinical characteristics and mutation spectrum in 33 Chinese families with familial exudative vitreoretinopathy. Ann Med 2022; 54:3286-3298. [PMID: 36411543 PMCID: PMC9704097 DOI: 10.1080/07853890.2022.2146744] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To explore the clinical manifestations and search for the variants of six related genes (LRP5, FZD4, TSPAN12, NDP, KIF11 and ZNF408) in Chinese patients with familial exudative vitreoretinopathy (FEVR), and investigate the correlation between the genetic variants and the clinical characteristics. PATIENTS AND METHODS Clinical data, including the retinal artery angle, acquired from wide-field fundus imaging, structural and microvascular features of the retina obtained from optical coherence tomography (OCT) and OCT angiography (OCTA) were collected from 33 pedigrees. Furthermore, mutation screening was performed. Variants filtering, bioinformatics analysis and Sanger sequencing were conducted to verify the variants. RESULTS Twenty-one variants were successfully detected in 16 of 33 families, of which 10 variants were newly identified. The proportion of variants in LRP5, FZD4, TSPAN12, NDP and KIF11 was 38.1% (8/21), 33.3% (7/21), 19.1% (4/21), 4.8% (1/21) and 4.8% (1/21), respectively. Three new variants were considered to be pathogenic or likely pathogenic. The FEVR group tended to exhibit a smaller retinal artery angle, higher incidence of foveal hypoplasia and lower vascular density compared to the control group. Patients who harboured variants of FZD4 exhibited greater severity of FEVR than those with LRP5 variants. However, those who harboured LRP5 variants tended to possess lower foveal vascular density. CONCLUSIONS Six known pathogenic genes were screened in 33 pedigrees with FEVR in our study, which revealed 10 novel variants. These findings enrich the clinical features and mutation spectrum in Chinese patients with FEVR, revealing the genotype-phenotype relationship, and contributing to the diagnosis and treatment of the disease.Key messagesWe identified 21 variants in 5 genes (LRP5, FZD4, TSPAN12, NDP and KIF11) associated with FEVR, 10 of which are novel (three were pathogenic or likely pathogenic).The proportion of variants was the highest for the LRP5 gene.FZD4 variants may be responsible for greater FEVR severity than LRP5 variants.
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Affiliation(s)
- Jianbo Mao
- Department of Ophthalmology, Center for Rehabilitation Medicine, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, PR China.,Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Yijing Chen
- Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Yuyan Fang
- Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Yirun Shao
- Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, PR China
| | - Ziyi Xiang
- Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Hanxiao Li
- Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Shixin Zhao
- Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Yiqi Chen
- Department of Ophthalmology, Center for Rehabilitation Medicine, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, PR China.,Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
| | - Lijun Shen
- Department of Ophthalmology, Center for Rehabilitation Medicine, Affiliated People's Hospital, Hangzhou Medical College, Hangzhou, PR China.,Department of Retina Center, Affiliated Eye Hospital of Wenzhou Medical University, Hangzhou, PR China
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