Phase 3 Study Comparing Nemtabrutinib Plus Venetoclax to Venetoclax Plus Rituximab in Adults with Relapsed or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma After Prior Treatment

What this Trial Is About

Researchers are evaluating the safety, tolerability, and dosing of nemtabrutinib combined with venetoclax compared to venetoclax plus rituximab in participants with relapsed or refractory chronic lymphocytic leukemia CLL or small lymphocytic lymphoma SLL. The study aims to determine if the combination of nemtabrutinib and venetoclax improves progression-free survival based on established criteria assessed by blinded independent review. Participants in one group will take daily oral nemtabrutinib tablets starting from the first treatment cycle and begin venetoclax tablets from the second cycle, continuing up to two years or until disease progression or discontinuation. The other group will receive daily venetoclax tablets from the first cycle and intravenous rituximab infusions once per 28-day cycle for six cycles, also continuing up to two years or until disease progression or discontinuation. A treatment cycle lasts four weeks. Throughout the study, participants will undergo assessments of dose-limiting toxicities, adverse events, and treatment discontinuations due to side effects, with monitoring periods ranging from approximately 12 weeks to over five years depending on the outcome measured. Researchers will also evaluate progression-free survival, minimal residual disease, overall survival, response rates, and duration of response. Participants need to meet specific health criteria and will be monitored carefully during and after treatment to track safety and effectiveness measures.

A Study of Nemtabrutinib Plus Venetoclax vs Venetoclax + Rituximab (VR) in Second-line (2L) + Relapsed/Refractory (R/R) Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL) (MK-1026-010/BELLWAVE-010).