To date, studies have found that Pycr1 is highly expressed in tumour tissues and that its expression is related to the occurrence and development of a variety of tumours, such as prostate cancer, lymphoma, and breast cancer, which has become a potential therapeutic target,9, 10, 11 but the role of Pycr1 in cardiovascular diseases, especially MI, has not been clear. The gene discussed is PYCR1; the disease is breast cancer.