XIAP and prostate carcinoma: A new study conducted by Niu Y et al on the prostate cancer cell lines (LNCaP, 22Rv1, and PC‐3) revealed that this circRNA executes its abnormal roles in the invasion and migration of the tumor cells via circCDR1as/miR‐641/XIAP regulatory axis, and during tumor phenotypes, the expressions of circCDR1AS and XIAP were upregulated, while the expression of miR‐641 was reduced in these cell lines compared with the normal prostate epithelial cell line (RWPE‐1).17