Ross et al. (2009) demonstrated that rs12201199 of TPMT (OR = 17.0, 95% CI 2.3, 125.9) and rs9332377 of COMT (OR = 5.5, 95% CI 1.9, 15.9) are associated with cisplatin-induced hearing loss in children. Here, TPMT is linked to hearing loss disorder.