Tioguanine Active Not Recruiting Phase 3 Trials for Childhood B Lymphoblastic Lymphoma / Childhood B Acute Lymphoblastic Leukemia With t(9;22)(q34.1;q11.2); BCR-ABL1 / B-cell Childhood Acute Lymphoblastic Leukemia / Acute Lymphoblastic Leukemia (ALL) / Philadelphia Chromosome Positive (Ph+) / Hypodiploid B Acute Lymphoblastic Leukemia / Ann Arbor Stage II B Lymphoblastic Lymphoma / Ann Arbor Stage I B Lymphoblastic Lymphoma / Down Syndrome (DS) / Adult B Lymphoblastic Lymphoma Treatment