ALDH2 and colorectal cancer: 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).