UCN2 and colorectal carcinoma: Meanwhile, YY1 might be a transcriptional repressor of Fas in CRC to suppress Fas/FasL‐mediated apoptosis, and the miR‐7/YY1/Fas cascade is mediated by corticotropin‐releasing hormone receptor 2 (CRHR2)/urocortin 2 (Ucn2) signaling.32