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Context

Congenital cataracts are one of the common eye disorders leading to visual impairment or blindness in children worldwide. We found a Chinese family with autosomal dominant pulverulent cataract.

Aims

To identify the pathogenic gene mutation in a Chinese family with autosomal dominant inherited pulverulent cataract.

Subjects and methods

After obtained informed consent, detailed ophthalmic examinations were carried out; genomic DNAs were obtained from seven family members in a three-generation Chinese family with three affected. All exons of candidate genes were amplified by polymerase chain reaction and were sequenced performed by bidirectional sequencing.

Results

By sequencing the encoding regions of the candidate genes, a missense mutation (c. 176C>T) was detected in gap junction protein alpha 3 genes (GJA3), which resulted in the substitution of highly conserved proline by leucine at codon 59 (p.P59L). The mutation co-segregated with all patients and was absent in 100 normal Chinese controls.

Conclusions

The study identified a missense mutation (c. 176C>T) in GJA3 gene associated with autosomal dominant congenital pulverulent cataract in a Chinese family. It gave further evidence of phenotype heterogeneity for P59L mutation in GJA3 associated with congenital cataract."xsd:string
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http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/author"Chen Y."xsd:string
http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/author"Sun X."xsd:string
http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/author"Wang L."xsd:string
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http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/name"Indian J Ophthalmol"xsd:string
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http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/title"Further evidence for P59L mutation in GJA3 associated with autosomal dominant congenital cataract."xsd:string
http://purl.uniprot.org/citations/27609163http://purl.uniprot.org/core/volume"64"xsd:string
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