FOLR2 and breast carcinoma: Numerous studies have shown that FRα is markedly overexpressed in ovarian, kidney, lung, brain, endometrial, colorectal, pancreatic, gastric, prostate, testicular, bladder, head and neck, breast cancers, and non‐small‐cell lung cancer.19, 20, 21, 22, 23, 24, 25, 26 However, there are few reports about FR‐beta expression in variant cancers, including gastric cancer.