In prostate cancer, some scholars have found that knocking down STAT5A can increase the sensitivity of prostate cancer to radiotherapy and reduce radiation damage to adjacent tissues45; in colorectal cancer, inhibition of STAT5A promotes chemotherapy (such as cisplatin or 5‐FU)‐induced apoptosis of colorectal cancer cells.46 This evidence concerns the gene STAT5A and Familial prostate cancer.