NCT02336048 2021-04-08A Study Evaluating the Safety of Tocilizumab in Addition to Standard of Care Premedication Given Before Obinutuzumab + Chlorambucil in Participants With Untreated B-Cell Chronic Lymphocytic Leukemia (B-CLL) and ComorbiditiesHoffmann-La RochePhase 1 Terminated38 enrolled