PTBP1 and colorectal carcinoma: Liu et al demonstrated that underexpressed miR‐124 could regulate inhibitor of apoptosis‐stimulating protein of p53 (iASPP) in CRC patients and was related to the proliferation of CRC cells via influencing the iASPP/NF‐kB pathway.60 In addition, miR‐124 inhibited the target gene polypyrimidine tract‐binding protein 1 (PTB1) in the DLD‐1 CRC cell line.