Objective:To assess the association of c. 109G>A (p.V37I) variant of the
GJB2 gene and its types with the risk of deafness.
Methods:PubMed, Embase, Cochrane Library, CNKI, Wanfang, and VIP database were searched for cases with
GJB2 gene c. 109G>A (p.V37I) variant and its compounds with variants of other sites from case-control studies, cohort studies and cross-sectional studies. The search time was from the establishment of database to April 2021. Two researchers have independently screened the literature according to the inclusion and exclusion criteria, extracted the data, and evaluated ...