Journal of genetics | |
GJB2 and GJB6 gene mutations found in Indian probands with congenital hearing impairment | |
P. V. Ramchander1  U. V. Nandur2  T. Padma13  G. Padma3  | |
[1] Institute of Life Sciences, Nalco Square, Bhubaneswar 751 023, India$$;Government Ear, Nose and Throat Hospital, Koti, Hyderabad 500 195, India$$;Department of Genetics, Osmania University, Tarnaka, Hyderabad 500 007, India$$ | |
关键词: deafness; GJB2; GJB6; p.W24X mutation; del(GJB6-D13S1830); connexin; human genetics.; | |
DOI : | |
学科分类:生物科学(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Genetically caused deafness is a common trait affecting one in 1000 children and is predominantly inherited in an autosomal-recessive fashion. Several mutations in the GJB2 gene and a deletion of 342 kb in GJB6 gene (delGJB6-D13S1830) have been identified worldwide in patients with hearing impairment. In the present study, 303 nonsyndromic hearing-impaired patients (140 familial; 163 sporadic) were examined clinically and screened for mutations in GJB2 and GJB6 genes. Mutations in GJB2 gene were found in 33 (10.9%) patients of whom six (18.2%) were carriers for the mutant allele. The most frequent mutation was p.W24X accounting for 87% of the mutant alleles. In addition, six other sequence variations were identified in the GJB2 gene viz., c.IVS1+1G>A, c.167delT, c.235delC, p.W77X, p.R127H (polymorphism), p.M163V. None of the samples showed del(GJB6-D13S1830) or any point mutations in GJB6 gene.
【 授权许可】
Unknown
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