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PLoS By Category | Recent PLoS Articles
Non-Clinical Medicine - Otolaryngology - Pediatrics and Child Health - Public Health and Epidemiology

The p.V37I Exclusive Genotype Of GJB2: A Genetic Risk-Indicator of Postnatal Permanent Childhood Hearing Impairment
Published: Friday, May 04, 2012
Author: Lei Li et al.

by Lei Li, Jingrong Lu, Zheng Tao, Qi Huang, Yongchuan Chai, Xiaohua Li, Zhiwu Huang, Yun Li, Mingliang Xiang, Jun Yang, Guoyin Yao, Yu Wang, Tao Yang, Hao Wu

Postnatal permanent childhood hearing impairment (PCHI) is frequent (0.25%–0.99%) and difficult to detect in the early stage, which may impede the speech, language and cognitive development of affected children. Genetic tests of common variants associated with postnatal PCHI in newborns may provide an efficient way to identify those at risk. In this study, we detected a strong association of the p.V37I exclusive genotype of GJB2 with postnatal PCHI in Chinese Hans (P?=?1.4×10-10; OR 62.92, 95% CI 21.27–186.12). This common genotype in Eastern Asians was present in a substantial percentage (20%) of postnatal PCHI subjects, and its prevalence was significantly increased in normal-hearing newborns who failed at least one newborn hearing screen. Our results indicated that the p.V37I exclusive genotype of GJB2 may cause subclinical hearing impairment at birth and increases risk for postnatal PCHI. Genetic testing of GJB2 in East Asian newborns will facilitate prompt detection and intervention of postnatal PCHI.
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