Prednisone Withdrawn Phase 2 Trials for B-cell Adult Acute Lymphoblastic Leukemia / Untreated Adult Acute Lymphoblastic Leukemia / Blastic Phase Chronic Myelogenous Leukemia / Philadelphia Chromosome Positive Adult Precursor Acute Lymphoblastic Leukemia / Chronic Myelogenous Leukemia, BCR-ABL1 Positive Treatment