Abstract:
:Background: The present study aims to identify the underlying genetic defects in a Chinese family with autosomal dominant congenital cataracts (ADCC). Methods: Detailed family histories and clinical data were recorded. Targeted exome sequencing of 54 known cataract-associated genes combined with high-throughput next-generation sequencing was conducted followed by Sanger sequencing and bioinformatic analysis to identify the causative gene lesion for the family. Results: A four-generation Chinese family with posterior pole type cataract were enrolled. Enrichment of targeted genes revealed a new heterozygous p.X176Y mutation in the stop codon of αB-crystallin (CRYAB) gene, which resulted in the loss of the stop codon and prolongation of the mutant protein by 19 amino acid residues (p.X176Yfs19*). Sanger sequencing showed complete co-segregation with the disease. The elongated mutant protein was predicted to be pathogenic by forming new α-helix and random-coil in the secondary structure as well as producing an extended strand in the tertiary structure, potentially leading to increased hydrophobicity and reduced protein stability. Conclusions: Our report added a new mutation in the spectrum of congenital cataracts. The data suggested that X176 residue in the COOH-terminal is of crucial importance for the αB-crystallin protein function which was valuable for further study of the pathogenesis of congenital cataracts. Abbreviations:CRYAB: αB-crystallin; DNA: deoxyribonucleic acid; PCR: polymerase chain reaction; TES: targeted exome sequencing; ACD: αB-crystallin domain.
journal_name
Ophthalmic Genetjournal_title
Ophthalmic geneticsauthors
Yu Y,Xu J,Qiao Y,Li J,Yao Kdoi
10.1080/13816810.2020.1855665subject
Has Abstractpub_date
2020-12-04 00:00:00pages
1-5eissn
1381-6810issn
1744-5094pub_type
杂志文章abstract:PURPOSE:The associations between genetic variants located in CFH, CFB, ARMS2 and HTRA1 and the risk of age-related macular degeneration (AMD) in a northern Chinese population were investigated. METHODS:A case-control association study of 150 AMD patients and 145 ethnicity- and gender-matched controls were recruited. G...
journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816810.2014.921314
更新日期:2014-09-01 00:00:00
abstract:PURPOSE:to report phenotypic and genotypic features in a group of autosomal recessive retinitis pigmentosa (arRP) patients associated with EYS mutations. METHODS:we retrospectively reviewed the clinical records and the molecular genetic data of arRP patients carrying mutations in the EYS gene. All the patients underwe...
journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1080/13816810.2018.1509351
更新日期:2018-10-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1080/13816810.2020.1778736
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816810.2014.886270
更新日期:2015-01-01 00:00:00
abstract::Purpose: To report novel mutations in the FZD4 and LRP5 genes, associated with familial exudative vitreoretinopathy (FEVR), and to correlate with clinical features of 7 FEVR patients. Methods: In this retrospective case series, 7 patients who had undergone genetic panel testing and carried a diagnosis of FEVR were ide...
journal_title:Ophthalmic genetics
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doi:10.1080/13816810.2020.1855664
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abstract:PURPOSE:To perform genotype-phenotype correlations in a family with choroideremia. METHODS:A three-generation family with two affected males and five carriers was the subject of the study. Molecular genetic analysis using single-strand conformation polymorphism analysis (SSCP) was conducted in all subjects, while elec...
journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1076/opge.24.4.203.17232
更新日期:2003-12-01 00:00:00
abstract::Since the discovery of the ABCA4 gene as the cause of autosomal recessive Stargardt disease/fundus flavimaculatus much has been written of the phenotypic variability in ABCA4 retinopathy. In this review the authors discuss the findings seen on examination and the disease features detected using various clinical tests....
journal_title:Ophthalmic genetics
pub_type: 杂志文章,评审
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abstract:BACKGROUND:Microphthalmia, anophthalmia, coloboma (MAC) complex is a spectrum of ocular abnormalities that occur in isolation or as part of a syndrome. Genetic abnormalities have been shown to account for 80% of cases in bilateral anophthalmia or severe microphthalmia, where 25-30% were attributed to chromosomal defect...
journal_title:Ophthalmic genetics
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doi:10.1080/13816810.2020.1776338
更新日期:2020-08-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1080/13816810.2019.1666882
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
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更新日期:2019-10-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1076/opge.20.4.225.2269
更新日期:1999-12-01 00:00:00
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doi:10.3109/13816810.2015.1010735
更新日期:2015-06-01 00:00:00
abstract:PURPOSE:To characterize the underlying genetic defect in otherwise healthy Saudi newborns with buphthalmos, including those with iris abnormalities. METHODS:Prospective case series of affected Saudi Arabian probands who were referred for genetic counseling over a 4 year period. All had CYP1B1 sequencing. Selected pati...
journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816810.2010.544365
更新日期:2011-09-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816819709041434
更新日期:1997-12-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.1080/13816810.2018.1479430
更新日期:2018-08-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816810.2013.766218
更新日期:2014-03-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章,meta分析,评审
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更新日期:2017-07-01 00:00:00
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journal_title:Ophthalmic genetics
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journal_title:Ophthalmic genetics
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更新日期:2013-03-01 00:00:00
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doi:10.3109/13816810.2013.873941
更新日期:2015-01-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::Usher syndrome has classically been described as a combination of hearing loss and rod-cone dystrophy; vestibular dysfunction is present in many patients. Three distinct clinical subtypes were documented in the late 1970s. Genotyping efforts have led to the identification of several genes associated with the disease. ...
journal_title:Ophthalmic genetics
pub_type: 杂志文章
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更新日期:2020-10-01 00:00:00
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journal_title:Ophthalmic genetics
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doi:10.1080/13816810802452168
更新日期:2009-03-01 00:00:00
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journal_title:Ophthalmic genetics
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doi:10.1080/13816810802697473
更新日期:2009-06-01 00:00:00
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journal_title:Ophthalmic genetics
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更新日期:2006-03-01 00:00:00
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journal_title:Ophthalmic genetics
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更新日期:2017-01-01 00:00:00
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journal_title:Ophthalmic genetics
pub_type: 杂志文章
doi:10.3109/13816819409056908
更新日期:1994-03-01 00:00:00
abstract::Etiological investigation of a 15-year-old boy with left ophthalmic artery occlusion led us to a diagnosis of neurofibromatosis type I as there were numerous large cafe-au-lait spots, axillary freckling, and brain MRI changes consistent with a hamartoma. In light of the present case, ophthalmic artery occlusion may be...
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doi:10.1076/opge.19.2.87.2322
更新日期:1998-06-01 00:00:00