ADH1C and esophageal squamous cell carcinoma: A significantly increased ESCC risk associated with the ADH1C rs1614972 TC or CC genotype compared with the TT genotype was observed (OR = 1.35; 95% CI  = 1.06–1.73, P = 0.016; OR = 3.59; 95% CI  = 2.19–5.88, P<0.001).