NCT00003934 2013-06-05Tretinoin, Cytarabine, and Daunorubicin Hydrochloride With or Without Arsenic Trioxide Followed by Tretinoin With or Without Mercaptopurine and Methotrexate in Treating Patients With Acute Promyelocytic LeukemiaNational Cancer Institute (NCI)Phase 3 Completed420 enrolled