Nevertheless, it is important to note that studies have shown that allogeneic transfusions may increase long-term mortality and cardiovascular events in postoperative hip fracture patients.[56] Therefore, experts suggest carefully weighing the pros and cons before deciding to proceed with a blood transfusion.[57] Based on our findings, when patients have a preoperative Hb level below 10 g/dL, proactive measures should be taken to improve Hb levels. Here, GSTM1 is linked to hip fracture.