A Study of Venetoclax in Combination With Obinutuzumab in Participants With Chronic Lymphocytic Leukemia
Phase 1
Completed
- Conditions
- Lymphocytic Leukemia, Chronic
- Interventions
- Registration Number
- NCT01685892
- Lead Sponsor
- Genentech, Inc.
- Brief Summary
This multi-center, open-label, dose-finding study will evaluate the safety and pharmacokinetics as well as the preliminary efficacy of venetoclax (GDC-0199; ABT-199) administered in combination with obinutuzumab to participants with relapsed/refractory or previously untreated chronic lymphocytic leukemia (CLL). The study is comprised of two stages for each participant population: a dose-finding stage and a safety-expansion stage. The dose-finding stage will explore multiple doses of venetoclax to be used in combination with a fixed dose of obinutuzumab. The dose-finding stage will also explore two schedules for drug administration, Schedule A (venetoclax introduced before obinutuzumab) and Schedule B (venetoclax introduced after obinutuzumab).
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 82
Inclusion Criteria
- Diagnosis of relapsing/refractory or previously untreated chronic lymphocytic leukemia
- Eastern Cooperative Oncology Group (ECOG) performance score of less than or equal to (</=) 1
- Adequate bone marrow function
- Adequate coagulation, renal and hepatic function
- For all participants, agreement to remain abstinent or use contraceptive methods that result in a failure rate of less than (<) 1% per year during the treatment period and for at least 90 days (30 days for women) after the last dose of venetoclax or 18 months after the last dose of obinutuzumab, whichever is longer
Exclusion Criteria
- Participants who have undergone allogenic stem cell transplant are ineligible unless they meet the following criteria, a) participants who are off all immunosuppressive therapy, b) participants who have no signs and/or symptoms of acute or chronic graft versus host disease, or c) participants must have appropriate hematology counts
- Infection with human immunodeficiency virus (HIV), hepatitis B, or hepatitis C
- Uncontrolled autoimmune hemolytic anemia or thrombocytopenia
- Investigational or anti-cancer therapy within 5 half-lives prior to the first dose of study drug
- History of significant renal, neurologic, psychiatric, endocrinologic, metabolic, immunologic, cardiovascular, or hepatic disease
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SEQUENTIAL
- Arm && Interventions
Group Intervention Description Dose-Finding: Schedule A: Relapsed/Refractory CLL Obinutuzumab All 4 cohorts will begin venetoclax administration after the ramp-up period of 5 weeks. In 4 cohorts of participants with relapsed/refractory CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule A, venetoclax will be introduced before obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule A: Relapsed/Refractory CLL Venetoclax All 4 cohorts will begin venetoclax administration after the ramp-up period of 5 weeks. In 4 cohorts of participants with relapsed/refractory CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule A, venetoclax will be introduced before obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule B: Relapsed/Refractory CLL Venetoclax In 4 cohorts of participants with relapsed/refractory CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule B, venetoclax will be introduced after obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule B: Relapsed/Refractory CLL Obinutuzumab In 4 cohorts of participants with relapsed/refractory CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule B, venetoclax will be introduced after obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule A: Previously Untreated CLL Obinutuzumab All 4 cohorts will begin venetoclax administration after the ramp-up period of 5 weeks. In 4 cohorts of participants with previously untreated CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule A, venetoclax will be introduced before obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule A: Previously Untreated CLL Venetoclax All 4 cohorts will begin venetoclax administration after the ramp-up period of 5 weeks. In 4 cohorts of participants with previously untreated CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule A, venetoclax will be introduced before obinutuzumab. Schedule A will be explored prior to Schedule B. Safety Expansion: Previously Untreated CLL Obinutuzumab In participants with previously untreated CLL a recommended dose of venetoclax will be administered in combination with obinutuzumab in the safety expansion stage. Schedule A or B will be used for the expansion cohort after a review of available safety data from the dose finding stage. Safety Expansion: Relapsed/Refractory CLL Obinutuzumab In participants with relapsed/refractory CLL a recommended dose of venetoclax will be administered in combination with obinutuzumab in the safety expansion stage. Schedule A or B will be used for the expansion cohort after a review of available safety data from the dose finding stage. Dose-Finding: Schedule B: Previously Untreated CLL Obinutuzumab In 4 cohorts of participants with previously untreated CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule B, venetoclax will be introduced after obinutuzumab. Schedule A will be explored prior to Schedule B. Dose-Finding: Schedule B: Previously Untreated CLL Venetoclax In 4 cohorts of participants with previously untreated CLL escalating doses of venetoclax will be administered in combination with fixed dose obinutuzumab in the dose-finding stage. In Schedule B, venetoclax will be introduced after obinutuzumab. Schedule A will be explored prior to Schedule B. Safety Expansion: Relapsed/Refractory CLL Venetoclax In participants with relapsed/refractory CLL a recommended dose of venetoclax will be administered in combination with obinutuzumab in the safety expansion stage. Schedule A or B will be used for the expansion cohort after a review of available safety data from the dose finding stage. Safety Expansion: Previously Untreated CLL Venetoclax In participants with previously untreated CLL a recommended dose of venetoclax will be administered in combination with obinutuzumab in the safety expansion stage. Schedule A or B will be used for the expansion cohort after a review of available safety data from the dose finding stage.
- Primary Outcome Measures
Name Time Method Percentage of Participants With Dose Limiting Toxicities (DLTs) Schedule (Sch) A (Cycle 1 Day 1 to Day 21), Sch B (Cycle 1 Day 22 to Cycle 2 Day 28) (1 Cycle=28 days) Maximum Tolerated Dose (MTD) of Venetoclax in Combination with Obinutuzumab Sch A (Cycle 1 Day 1 to Day 21), Sch B (Cycle 1 Day 22 to Cycle 2 Day 28) (1 Cycle=28 days)
- Secondary Outcome Measures
Name Time Method Percentage of Participants with Adverse Events Baseline up to end of study (up to approximately 5 years and 5 months) Minimum Plasma Concentration (Cmin) of Venetoclax Baseline up to Cycle 6 (1 Cycle=28 days) Percentage of Participants with Anti-Therapeutic Antibodies (ATAs) to Obinutuzumab Baseline up to Cycle 6 (1 Cycle=28 days) Area Under the Concentration-Time Curve (AUC) of Venetoclax Baseline up to Cycle 6 (1 Cycle=28 days) Time to Maximum Observed Plasma Concentration (Tmax) of Venetoclax Baseline up to Cycle 6 (1 Cycle=28 days) Cmax of Obinutuzumab Baseline up to Cycle 6 (1 Cycle=28 days) Percentage of Participants with Confirmed Complete Response (CR) as Determined by Standard CLL Response Criteria Baseline up to end of study (up to approximately 5 years and 5 months) Percentage of Participants with Objective Response (Partial Response [PR] or CR [Including Cytopenic CR] as Determined by Standard CLL Response Criteria Baseline up to end of study (up to approximately 5 years and 5 months) Duration of Objective Response as Determined by Standard CLL Response Criteria Baseline up to end of study (up to approximately 5 years and 5 months) Change from Baseline in Number of B-Cells Baseline up to end of study (up to approximately 5 years and 5 months) Change from Baseline in Number of T-Cells Baseline up to end of study (up to approximately 5 years and 5 months) Change from Baseline in Number of Natural Killer (NK) Cells Baseline up to end of study (up to approximately 5 years and 5 months) Cmin of Obinutuzumab Baseline up to Cycle 6 (1 Cycle=28 days) Maximal Plasma Concentration (Cmax) of Venetoclax Baseline up to Cycle 6 (1 Cycle=28 days) Change from Baseline in Serum Immunoglobulin Level Baseline up to end of study (up to approximately 5 years and 5 months) Overall Survival Baseline up to death or end of study (up to approximately 5 years and 5 months) Progression-Free Survival as Determined by Standard CLL Response Criteria Baseline up to end of study (up to approximately 5 years and 5 months)
Trial Locations
- Locations (10)
UCSD Moores Cancer Center
🇺🇸La Jolla, California, United States
Colorado Blood Cancer Institute (CBCI) at Presbyterian/ St. Luke's Medical Center
🇺🇸Denver, Colorado, United States
Weill Cornell Medical College-New York Presbyterian Hospital
🇺🇸New York, New York, United States
Ohio State University Comprehensive Cancer Center
🇺🇸Columbus, Ohio, United States
Oncology Associates of Oregon
🇺🇸Springfield, Oregon, United States
The Methodist Hospital Research Institute; Academic Office of Clinical Trials
🇺🇸Houston, Texas, United States
St James University Hospital
🇬🇧Leeds, United Kingdom
Barts and The London School of Medicine and Dentistry; Queen Mary, University of London
🇬🇧London, United Kingdom
Leicester Royal Infirmary NHS Trust
🇬🇧Leicester, United Kingdom
SCRI-Tennessee Oncology
🇺🇸Nashville, Tennessee, United States