A Study of PCI-32765 (Ibrutinib) in Combination With Either Bendamustine and Rituximab or Rituximab, Cyclophosphamide, Doxorubicin, Vincristine, and Prednisone in Participants With Previously Treated Indolent Non-Hodgkin Lymphoma

Inclusion Criteria:

Histologically confirmed diagnosis of B-cell indolent Non-Hodgkin lymphoma with histological subtype limited to follicular lymphoma or marginal zone lymphoma, at initial diagnosis and without evidence of pathological transformation or clinical signs suggesting transformation
At least 1 prior treatment with a CD20 antibody combination chemo-immunotherapy regimen
Disease that has relapsed or was refractory after prior chemo-immunotherapy
At least 1 measurable site of disease according to Revised Response Criteria for Malignant Lymphoma 2007
Eastern Cooperative Oncology Group performance status grade 0 or 1
Laboratory values within protocol-defined parameters
Agrees to protocol-defined use of effective contraception
Men must agree not to donate sperm during and after the study for 6 months after the last dose of bendamustine, 12 months after the last dose of rituximab, or 3 months after the last dose of study medication, whichever is later
Women of childbearing potential must have a negative serum or urine pregnancy test at Screening

Exclusion Criteria:

Prior treatment according to protocol-defined criteria
Unable to receive background chemotherapy based on prior treatment history and cardiac function
Known central nervous system lymphoma
Diagnosed or treated for malignancy other than indolent Non-Hodgkin lymphoma
History of stroke or intracranial hemorrhage within 6 months prior to randomization
Requires anticoagulation with warfarin or equivalent Vitamin K antagonists
Requires treatment with strong CYP3A inhibitors
Clinically significant cardiovascular disease
Known history of human immunodeficiency virus or active hepatitis C virus (HCV; ribonucleic acid [RNA] polymerase chain reaction [PCR]-positive) or active hepatitis B virus (HBV; DNA PCR-positive) infection or any uncontrolled active systemic infection requiring intravenous antibiotics
Any life-threatening illness, medical condition, or organ system dysfunction which, in the Investigator's opinion, could compromise the participant's safety, interfere with the absorption or metabolism of ibrutinib capsules, or put the study outcomes at undue risk
Women who are pregnant or breastfeeding