GSTM1 and anemia (phenotype): ABT can cause infectious disease transmission, systemic and local immune modulation, cardiac overload, lung injury, and matching errors.[10] Furthermore, fluid overload is a common complication after ABT in patients undergoing hip surgery and ABT-associated circulatory overload is the second leading cause of ABT-related death.[34] Therefore, physicians should attempt to administer anemia-correcting agents instead of ABT to correct low preoperative Hb level and should perform cautious fluid management.