Q. A 28-year-old man is admitted to the hospital with multiple petechiae and ecchymoses. He mentions that he recently had fatigue. The ecchymoses appeared with minor trauma last night. He had adenoid and tonsillectomy at the age of 8. His father died from a heart attack at the age of 59. His mother and only younger sister are alive and healthy. He has no fever, and his vital signs are stable. On physical examination, the only significant findings are numerous petechiae all over the body, several ecchymoses over the upper and lower limbs, and mild splenomegaly. The lab tests show a WBC count of 14,800 cells/microL with blasts containing Auer rod, platelet count 74,000/microL, serum D-Dimer 520 ng/mL, PT 24 sec, and aPTT 62 sec. Which medication is required to be included in the treatment for his underlying hematologic disease?