Permuth‐Wey et al found that rs11247946 and rs12728900 of LIN28A predispose to epithelial ovarian cancer susceptibility in European ancestry.12 In a study conducted in China, Zhang et al explored association between six genetic variants in let‐7/Lin28 and oral cavity cancer risk with 384 cases and 731 controls, and they detected a protective effect of LIN28B rs221636 on oral cavity cancer. This evidence concerns the gene LIN28A and oral cavity cancer.