ADH1B and cancer: Examination of the joint effects of the two genetic variants in men showed that the risks of IARC alcohol‐related cancers and of UADT cancers were highest for the combination of ALDH2‐rs671 AG with ADH1B‐rs1229984 GG genotypes, followed by the combination of GG/GG genotypes, and were lowest for the combinations of ALDH2‐rs671 AA with ADH1B‐rs1229984 AG or AA genotypes (Table S6).