BCL2 and neoplasm: The results showed that over‐expressed let‐7a‐1, let‐7d, or let‐7f‐1 resulted in elevated protein expression of c‐Caspase‐3/t‐Caspase‐3 and LC3II/I, while decreased Bcl‐2 and P62 protein expression, with the most significant changes observed in the tumor tissues treated with cluster mimic (P < .01).