We showed that 3 of them, rs1695 in GSTP1, the absence of GSTT1, and rs1799793 in XPD/ERCC2 were significantly associated with hearing impairment, whereas rs4880, rs2228001, rs4788863, rs1799735, and presence of GSTM1 were not. This evidence concerns the gene ERCC2 and Hearing impairment.