The expression of the miR-106b-25 cluster is upregulated in gastric cancer, which inhibits the TGF-β pathway, induces the downregulation of the expression of cyclin-dependent kinase inhibitor 1A (CDKN1A) and BCL2-like 11 apoptosis facilitator (BCL2L11), and promotes the development and progression of gastric cancer [43]. Here, CDKN1A is linked to gastric cancer.