CBP: Hb: 18.3 g/dL; WBC: normal; platelets: 1,30000/cu.mm; repeat CBP on 3rd DOL: Hb: 13.2 g/dL; platelets: 142000/ cu.mm; WBC: normal; CRP: normal; APTT - 51.8 sec; PT: 20.9 sec; INR: 1.3; D-dimer: 778 ng/mL; 2DEcho: normal study; CT: subdural hemorrhage; chest x-ray: normal. Here, GSTM1 is linked to Subdural hemorrhage.