作者: Girish V Putcha , Bassem A Bejjani , Stacey Bleoo , Jessica K Booker , John C Carey
DOI: 10.1097/GIM.0B013E3180A03276
关键词: Etiology 、 Sensorineural hearing loss 、 Mutation 、 GJB6 、 Cohort 、 Genetics 、 Allele frequency 、 Compound heterozygosity 、 Hearing loss 、 Biology
摘要: Purpose: The aim of the study was to determine actual GJB2 and GJB6 mutation frequencies in North America after several years generalized testing for autosomal recessive nonsyndromic sensorineural hearing loss help guide diagnostic algorithms, especially light molecular follow-up universal newborn screening. Methods: Mutation types, frequencies, ethnic distributions, genotype-phenotype correlations were assessed a very large American cohort. Results: variants identified 1796 (24.3%) 7401 individuals examined, with 399 (5.4%) homozygous 429 (5.8%) compound heterozygous. deletion performed 12.0% (888/7401) all cases. >300-kb only nine (1.0%), whom heterozygous mutations GJB6. Among total 139 identified, 53 (38.1%) previously unreported, presumably representing novel pathogenic or benign variants. Conclusions: frequency distribution sequence changes differ from those reported, suggesting considerable role loci other than etiology loss, minimal prevalence deletion.