A Study of Obinutuzumab, Rituximab, Polatuzumab Vedotin, and Venetoclax in Relapsed or Refractory Follicular Lymphoma (FL) or Diffuse Large B-Cell Lymphoma (DLBCL)

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

• Ages 18 years and older
• All sexes
• No healthy volunteers
• Adult, Older adult

Trial locations and contacts

23 sites in 3 countries.

About this study

Official title: A Phase Ib/II Study Evaluating the Safety and Efficacy of Obinutuzumab in Combination With Polatuzumab Vedotin and Venetoclax in Patients With Relapsed or Refractory Follicular Lymphoma and Rituximab in Combination With Polatuzumab Vedotin and Venetoclax in Patients With Relapsed or Refractory Diffuse Large B-Cell Lymphoma

Conditions

Non-Hodgkin's Lymphoma

Being tested

Obinutuzumab, Rituximab, Polatuzumab Vedotin, Venetoclax

Medical subject headings

Lymphoma, Non-Hodgkin

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

• ObinutuzumabDrug

  Participants will receive a fixed dose of obinutuzumab, 1000 milligrams (mg) via intravenous (IV) infusion to be given on Days 1, 8 and 15 of Cycle 1 and on Day 1 of Cycles 2 to 6. Cycle length will be 21 days. For eligible participants, post-induction treatment may be given at a dose of 1000 mg via IV infusion on Day 1 of every other month (starting from Month 2) for up to 24 months, until disease progression or unacceptable toxicity.

• RituximabDrug

  Participants will receive a fixed dose of rituximab, 375 milligrams per square meter (mg/m^2) via IV infusion to be given on Day 1 of Cycles 1 to 6. Cycle length will be 21 days. For eligible participants, post-induction treatment may be given at a dose of 375 mg/m^2 via IV infusion on Day 1 of every other month (starting from Month 2) for up to 8 months, until disease progression or unacceptable toxicity.

• Polatuzumab VedotinDrug

  Participants will receive polatuzumab vedotin via IV infusion at doses of 1.4 or 1.8 milligrams per kilogram (mg/kg) (for FL), and 1.8 mg/kg (for DLBCL) on Day 1 of each 21-day cycle for up to 18 weeks during induction treatment. Polatuzumab vedotin will not be given during the post-induction period.

• VenetoclaxDrug

  Participants will receive venetoclax film-coated tablets at doses of 200, 400, 600, or 800 mg (for FL), and 400, 600, or 800 mg (for DLBCL) on Days 1 to 21 of each 21-day cycle. Post-induction venetoclax may continue for up to 8 months, until disease progression or unacceptable toxicity.

What is being measured

The primary outcome is the main question the study is designed to answer.

1. Percentage of Participants With CR at EOI Determined by an Independent Review Committee (IRC) on the Basis of Positron Emission Tomography (PET) and Computed Tomography (CT) Scans

   CR at EOI was assessed by the IRC according to modified Lugano Response Criteria (MLRC) for Malignant Lymphoma 2014 using PET-CT scan. Per MLRC, CR was defined as complete metabolic response (MR) in lymph nodes and extra lymphatic sites (ELS) with a score of 1, 2, or 3, with or without a residual mass on PET 5-point scale (5-PS), where 1=no uptake above background; 2= uptake ≤mediastinum; 3= uptake > mediastinum but ≤ liver; 4=uptake moderately > liver; 5=uptake markedly higher than liver and/or new lesions. No new lesions; no evidence of fluorodeoxyglucose (FDG)-avid disease in bone marrow. 90% confidence interval (CI) for percentage of responders was calculated using Clopper-Pearson method. Percentages have been rounded off to the first decimal point.

   Measured: 6 to 8 weeks after Day 1 of Cycle 6 (up to approximately 23 weeks) (1 cycle=21 days)

2. FL Cohorts: Percentage of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

   An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Any new disease or worsening of an existing disease were also considered as AEs. An SAE was defined as any AE that was fatal, life threatening, requires prolonged inpatient hospitalization, resulted in significant disability or resulted in a congenital anomaly to a mother exposed to study treatment. AEs and SAEs were reported based on the National Cancer Institute Common Terminology Criteria for AEs, version 4.0 (NCI-CTCAE, v4.0). Percentages have been rounded off to the first decimal point.

   Measured: From study start to 24 months after last dose of study drug (approximately 56 months)

3. DLBCL Cohorts: Percentage of Participants With AEs and SAEs

   An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE could therefore be any unfavorable and unintended sign, symptom, or disease temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. Any new disease or worsening of an existing disease were also considered as AEs. An SAE was defined as any AE that was fatal, life threatening, requires prolonged inpatient hospitalization, resulted in significant disability or resulted in a congenital anomaly to a mother exposed to study treatment. AEs and SAEs were reported based on the NCI-CTCAE, v4.0. Percentages have been rounded off to the first decimal point.

   Measured: From study start to 3 months after last dose of study drug (approximately 21 months)

4. Number of Participants With Dose-Limiting Toxicities (DLTs)

   DLT=any one of the events that occurred in first treatment cycle \& per the investigator was related to study treatment. Any AE that lead to a delay of > 14 days in start of next treatment cycle; Any Grade 3/4 non-hematologic AE with few exceptions; Any increase in hepatic transaminase >3×baseline(BL) \& increase in direct bilirubin >2×upper limit of normal (ULN), without any findings of cholestasis/jaundice/signs of hepatic dysfunction \& in absence of other contributory factors; Grade1 alanine transaminase (ALT)/aspartate transaminase (AST) elevation at BL as result of liver metastases, only a Grade ≥3 elevation, also ≥3×BL lasting >7 days; Hematologic AE meeting protocol specified criteria. Events were graded per NCI CTCAE v4.0. Grade 1:Mild; asymptomatic/mild symptoms; Grade 2:Moderate;minimal,local/non-invasive intervention indicated; Grade 3:Severe/medically significant, but not immediately life-threatening; Grade 4:Life-threatening consequences/urgent intervention indicated.

   Measured: Day 1 of Cycle 1 to Day 1 of Cycle 2 (1 cycle=21 days) in dose-escalation phase

5. RP2D of Polatuzumab Vedotin

   RP2D was defined as the highest dose with acceptable toxicity as determined from dose-escalation phase. The RP2D of polatuzumab vedotin when given in combination with fixed dose of obinutuzumab in participants with FL was determined.

   Measured: Day 1 of Cycle 1 to Day 1 of Cycle 2 (1 cycle=21 days) in dose-escalation phase

6. RP2D of Venetoclax

   RP2D was defined as the highest dose with acceptable toxicity as determined from dose-escalation phase. The RP2D of venetoclax when given in combination with fixed dose of polatuzumab vedotin in participants with FL and DLBCL was determined.

   Measured: Day 1 of Cycle 1 to Day 1 of Cycle 2 (1 cycle=21 days) in dose-escalation phase

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

1. First posted20 Nov 2015 (estimated)
2. Study start9 Mar 2016
3. Primary completion4 Aug 2022
4. Study completion4 Aug 2022

Resources

• Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
• Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
• Other trials for Non-Hodgkin's LymphomaStudies of the same condition, open and under way.
• More trials run by Hoffmann-La RocheThe sponsor's other registered studies.
• What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.