for people ages 18 years and up (full criteria)
at La Jolla, California and other locations
study started
estimated completion:



The purpose of this study is to assess progression‑free survival (PFS) from treatment with ibrutinib plus venetoclax (I+VEN) compared with obinutuzumab plus chlorambucil (G-Clb) as assessed by an Independent Review Committee (IRC).

Official Title

A Randomized, Open-label, Phase 3 Study of the Combination of Ibrutinib Plus Venetoclax Versus Chlorambucil Plus Obinutuzumab for the First-line Treatment of Subjects With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL).


The hypothesis is treatment with combination of I+VEN will result in longer PFS compared with G-Clb in participants with previously untreated chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL) who meet International Workshop on CLL (iwCLL) treatment criteria. The study includes screening (30 days), treatment (from randomization until treatment discontinuation) and follow-up phase (from treatment discontinuation until death, lost to follow up, consent withdrawal, or study end, whichever occurs first). Participants without progression will continue disease evaluations until disease progression or death. Study duration is approximately 6 years. Safety includes review of adverse events and laboratory tests performed over time.


Leukemia, Lymphocytic, Chronic, B-Cell Leukemia Leukemia, Lymphoid Obinutuzumab Venetoclax Chlorambucil Ibrutinib


You can join if…

Open to people ages 18 years and up

  • Adult participants who are: (a) greater than or equal to (>=) 65 years old or, (b) 18 to 64 years old and have at least 1 of the following:
  • Cumulative Illness Rating Scale (CIRS) score > 6
  • Creatinine clearance (CrCl) estimated less than (<) 70 milliliter per minute(mL/min) using Cockcroft-Gault equation
  • Diagnosis of chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL)that meets International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria
  • Measurable nodal disease (by computed tomography [CT]), defined as at least one lymph node > 1.5 centimeter (cm) in longest diameter
  • Eastern Cooperative Oncology Group (ECOG) Performance Status Grade less than or equal to (<=) 2
  • Active CLL/SLL requiring treatment per the iwCLL criteria

You CAN'T join if...

  • Prior anti-leukemic therapy for CLL or SLL
  • Presence of deletion of the short arm of chromosome 17 (del17p) or known TP53 mutation detected at a threshold of >10 percent (%) variable allele frequency (VAF)
  • Major surgery within 4 weeks of first dose of study treatment
  • Known bleeding disorders (example, von Willebrand's disease or hemophilia)
  • Central nervous system (CNS) involvement or suspected Richter's syndrome


  • University of California San Diego Medical Center not yet accepting patients
    La Jolla California 92093 United States
  • Swedish Cancer Institute withdrawn
    Seattle Washington 98104 United States


accepting new patients
Start Date
Completion Date
Janssen Research & Development, LLC
To learn how to participate in this trial please click here.
Phase 3
Study Type
Last Updated