['chronic lymphocytic leukemia']
['idelalisib', 'bendamustine', 'rituximab', 'placebo']

        Key Inclusion Criteria:

          -  Documented diagnosis of B-cell CLL, with diagnosis established according to
             International Workshop on Chronic Lymphocytic Leukemia (IWCLL)

          -  No prior therapy for CLL other than corticosteroids for disease complications

          -  CLL that warrants treatment

          -  Presence of measurable lymphadenopathy

          -  Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2

        Key Exclusion Criteria:

          -  Known histological transformation from CLL to an aggressive lymphoma (ie, Richter
             transformation)

          -  Known presence of myelodysplastic syndrome

          -  Evidence of ongoing systemic bacterial, fungal, or viral infection at the time of
             randomization

          -  Ongoing liver injury

          -  History of non-infectious pneumonitis

          -  Ongoing inflammatory bowel disease

          -  History of prior allogeneic bone marrow progenitor cell or solid organ transplantation

          -  Ongoing immunosuppressive therapy other than corticosteroids

          -  Received last dose of study drug on another therapeutic clinical trial within 30 days
             prior to randomization

        Note: Other protocol defined Inclusion/Exclusion criteria may apply.
      