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Mutation Analysis of Families with Autosomal Dominant Congenital Cataract: A Recurrent Mutation in the CRYBA1/A3 Gene Causing Congenital Nuclear Cataract

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机构: [1]Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University,Beijing Ophthalmology & Visual Sciences Key Lab, Beijing, China [2]Department of Ophthalmology, the Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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关键词: Congenital cataract hot spot mutation CRYBA1/A3 haplotype

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Purpose: To identify the CRYBA1/A3 mutation spectrum and analyze the genotype-phenotype correlations in Chinese families with congenital cataract. Methods: Family history and clinical data of 47 unrelated families with autosomal dominant congenital cataract (ADCC) were recorded. CRYBA1/A3 gene sequencing was applied to identify the causative mutation. Haplotypes were constructed using closely linked microsatellite markers and intragenic single-nucleotide polymorphisms (SNPs) to compare the affected haplotype in three families. Results: Nuclear cataract was the most common type of ADCC in Chinese families, accounting for 42.6% (20/47). A recurrent CRYBA1/A3 deletion mutation (Delta G91) was identified in three families (6.4%) with nonprogressive nuclear congenital cataract. Different haplotypes segregated with the mutation in each family. Conclusions: A recurrent Delta G91CRYBA1/A3 mutation occurs independently in 6.4% of the Chinese families with autosomal dominant nuclear cataracts and most likely represents a mutational hot spot, which underscores the relations between nonprogressive nuclear cataract and CRYBA1/A3.

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出版当年[2017]版:
大类 | 4 区 医学
小类 | 3 区 眼科学
最新[2025]版:
大类 | 4 区 医学
小类 | 4 区 眼科学
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出版当年[2016]版:
Q2 OPHTHALMOLOGY
最新[2023]版:
Q3 OPHTHALMOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2016版] 出版当年五年平均 出版前一年[2015版] 出版后一年[2017版]

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第一作者机构: [1]Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University,Beijing Ophthalmology & Visual Sciences Key Lab, Beijing, China
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通讯机构: [1]Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University,Beijing Ophthalmology & Visual Sciences Key Lab, Beijing, China [*1]Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, 1 Dong Jiao Min Xiang, Beijng 100730, China.
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