PTBP1 and cancer: In summary, based on the critical function of PTBP1 in cancer and the difficulties and challenges in its study, future research should focus on the following aspects: an in‐depth analysis of the structure–function relationship of PTBP1: resolving the structure of PTBP1 in complex with RNA and other proteins by techniques such as X‐ray crystallography or cryo‐electron microscopy will help to understand its specific functional mechanism.