Ibrutinib and Combination Chemotherapy in Treating Patients With Relapsed or Refractory Diffuse Large B-cell Lymphoma

This phase I trial studies the side effects and best dose of ibrutinib when given together with rituximab, ifosfamide, carboplatin, and etoposide (combination chemotherapy) in treating patients with diffuse large B-cell lymphoma (DLBCL) that has returned after a period of improvement (relapsed) or has not responded to treatment (refractory). Ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as, rituximab, ifosfamide, carboplatin, and etoposide, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving ibrutinib together with combination chemotherapy may be a better treatment for patients with relapsed or refractory DLBCL.