This is a Phase I, multicenter, open-label, dose-escalation study of polatuzumab vedotin administered as a single agent by intravenous (IV) infusion to participants with relapsed or refractory hematologic malignancies. In Phase Ib, participants will receive polatuzumab vedotin in combination with rituximab.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
95
Participants will receive escalating intravenous dose of polatuzumab vedotin.
Rituximab will be administered by an IV infusion at 375 mg/m\^2 body surface area dose q3w.
Stanford Cancer Center
Stanford, California, United States
Stanford Cancer Institute Pharmacy
Stanford, California, United States
Florida Cancer Specialists; Sarasota
Sarasota, Florida, United States
Roswell Park Cancer Inst.
Buffalo, New York, United States
Sarah Cannon Cancer Center
Germantown, Tennessee, United States
M.D Anderson Cancer Center; Oncology
Houston, Texas, United States
Fred Hutchinson Cancer Research Center
Seattle, Washington, United States
Cross Cancer Institute ; Dept of Medical Oncology
Edmonton, Alberta, Canada
British Columbia Cancer Agency
Vancouver, British Columbia, Canada
McGill University; Sir Mortimer B Davis Jewish General Hospital; Oncology
Montreal, Quebec, Canada
...and 6 more locations
Percentage of Participants With Dose-Limiting Toxicities (DLTs)
Time frame: Cycle 1 (Days 1-21)
Maximum Tolerated Dose
Time frame: Cycle 1 (Days 1-21)
Proposed Phase II Dose of Polatuzumab Vedotin
Time frame: Cycle 1 (Days 1-21)
Percentage of Participants With Adverse Events (AEs)
Time frame: Baseline up to 646 Days
Percentage of Paticipants with Anti Therapeutic Antibodies (ATAs) Against Polatuzumab Vedotin
Time frame: Preinfusion (0 hour) on Day 1 of Cycles 1, 2, 4, and at the treatment completion/early termination visit (up to 646 days)
Progression Free Survival (PFS), as Assessed by Using Modified Response Criteria for Non-Hodgkin Lymphoma (NHL) or Chronic Lymphocytic Leukemia (CLL)
Time frame: Baseline up to disease progression or death (Every 3 months while on study treatment from the initiation of therapy and 30 days after last dose of study drug [up to 44.5 months])
Percentage of Participants With Objective Response [Complete Response (CR) or Partial Response (PR)], as Assessed by Using Modified Response Criteria for NHL or CLL
Time frame: Every 3 months while on study treatment from the initiation of therapy and 30 days after last dose of study drug (up to 44.5 months)
Duration of Response, as Assessed by Using Modified Response Criteria for NHL or CLL
Time frame: Baseline up to disease progression or death (Every 3 months while on study treatment from the initiation of therapy and 30 days after last dose of study drug [up to 44.5 months])
Percentage of Participants with Best Overall Response (BOR), as Assessed by Using Modified Response Criteria for NHL or CLL
Time frame: Baseline up to disease progression or death (Every 3 months while on study treatment from the initiation of therapy and 30 days after last dose of study drug [up to 44.5 months])
Area Under the Curve (AUC) from Time 0 to The Last Quantifiable Time Point (AUClast)-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
AUC Extrapolating to Time of Infinity (AUCinf)-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Percentage of AUCinf (AUCextrap)-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Maximum Plasma Concentration (Cmax)-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Clearance-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Volume of Distribution at Steady State-Polatuzumab Vedotin Monotherapy
Time frame: Pre infusion (0 hour) and 0.5, 4 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
AUClast - Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
AUCinf-Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
AUCextrap-Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Cmax-Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Clearance-Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
Volume of Distribution at Steady State-Polatuzumab Vedotin Combined with Rituximab
Time frame: Pre infusion (0 hour) and 0.5 hours post infusion (duration of infusion: 90 minutes for first infusion and 30 minutes for subsequent infusions) on Cycle 1 Day 1; Cycle 1 Days 2, 4, 8, 11 and 15 (cycle length: 21 days)
AUClast of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
AUCinf of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
AUCextrap of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
Cmax of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
Clearance of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
Volume of Distribution at Steady State-of Rituximab When Given in Combination With Polatuzumab Vedotin
Time frame: Pre rituximab (0 hour) dose and 30 minutes post rituximab dose on Cycle 1 Day 1; Cycle 1 Days 4, 8, 15 (cycle length: 21 days)
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