CCND1 and cholangiocarcinoma: Pan‐Cancer Co‐Expression Analysis for the miRNA‐target interactions across 32 types of cancers from starBase V3.014 revealed that miR‐551b‐3p level was significantly inversely correlated with the level of CCND1 mRNA in CCA samples (r = −0.367, P = 0.0275, Figure 5B).