There were no clear interactions between alcohol consumption and ALDH2‐rs671 for liver or colorectal cancers, but the dose‐response association between alcohol and stomach cancer appeared stronger in ALDH2‐rs671 AG drinkers than in GG drinkers (HR = 3.36 [1.73‐6.54] vs 1.02 [0.73‐1.41], per 280 g/wk; Pheterogeneity = .002; Figure S2). This evidence concerns the gene ALDH2 and gastric cancer.