Ibrutinib and Blinatumomab in Treating Patients With Relapsed or Refractory B Acute Lymphoblastic Leukemia

PRIMARY OBJECTIVES: I. To evaluate the efficacy of ibrutinib and blinatumomab in patients with relapsed or refractory B acute lymphoblastic leukemia (B-ALL) as measured by complete response (CR) rate. SECONDARY OBJECTIVES: I. To further examine the efficacy and safety of ibrutinib and blinatumomab in patients with relapsed or refractory B-ALL as measured by overall response rate (ORR, defined as CR plus CR with incomplete count recovery \[CRi\]), relapse free survival (RFS), overall survival (OS), minimal residual disease (MRD) response, proportion of patients bridged to allogeneic hematopoietic cell transplant (allo-HCT), and toxicity.