The purpose of this study is to test the safety of a new combination of three oral drugs in Ph+ ALL. These drugs are dexamethasone, dasatinib, and ruxolitinib. All three drugs have been studied before in humans. This is a phase I study in which ruxolitinib dose will start low for the first patient together with dexamethasone plus dasatinib. If this dose does not cause a bad side effect, the ruxolitinib dose will slowly be made higher as new patients take part in the study. This will help the investigators find the right dose of ruxolitinib to give together with dexamethasone and dasatinib that will be used in future studies

NCT02494882

Conditions

1. Acute Lymphoblastic Leukemia

Interventions

1. Drug: Ruxolitinib
2. Drug: Dasatinib
3. Drug: Dexamethasone

MeSH:Leukemia Precursor Cell Lymphoblastic Leukemia-Lymphoma Leukemia, Lymphoid Philadelphia Chromosome

HPO:Leukemia Lymphoid leukemia

L248R, L248V, Q252H, E255K, V299L, T315A, T315I, F317C, F317L, F317S, F317V) - Relapsed or refractory Ph-like ALL without prior exposure to dasatibin and with mutations or rearrangements of genes conferring sensitivity to dasatibin (ABL, CSF1R, PDGFRB) or ruxolitinib (CRLF2, JAK3, EPOR, TSLP) - Newly diagnosed or relapsed CML in lymphoid blast crisis - Confirmation of Philadelphia chromosome positivity by cytogenetics (karyotype/FISH) and/or molecular tests (BCR-ABL1 transcripts) - Acceptable end-organ function, except for documented exclusions for organ function compromise due to ALL itself - ECOG performance status ≤ 2 - Men and women of childbearing potential must be willing to practice an effective method of birth control during treatment and for at least 4 months following treatment on study Exclusion Criteria: - Ph-negative ALL - Patients with dominant leukemic clone bearing documented bcr-abl mutations enabling bcr-abl TKI resistance at diagnosis - Mature B-cell (Burkitt's) ALL - Serum creatinine > 1.5x ULN and calculated creatinine clearance, based on a 24-hour urine collection, < 30 mL/min--unless related to ALL/tumor lysis syndrome and able to be corrected - Direct Bilirubin > 2x ULN; AST/ALT > 10x ULN, unless related to ALL liver infiltration. --- L248R --- --- L248V --- --- Q252H --- --- E255K --- --- V299L --- --- T315A --- --- T315I --- --- F317C --- --- F317L --- --- F317S ---