Phase 2 Study of Linvoseltamab to Treat Adults With High-Risk Monoclonal Gammopathy of Undetermined Significance or Non-High-Risk Smoldering Multiple Myeloma

What this Trial Is About

Researchers are studying an investigational drug called linvoseltamab in adults who have a moderate risk of developing multiple myeloma. This group includes patients with precancerous conditions known as High-Risk Monoclonal Gammopathy of Undetermined Significance HR-MGUS and Non-High-Risk Smoldering Multiple Myeloma NHR-SMM. The main goal is to understand how well linvoseltamab can eliminate abnormal plasma cells and laboratory signs associated with these conditions. Participants will receive linvoseltamab following a step-up dosing regimen to assess safety and tolerability before moving to one of four full dosing regimens. The study is divided into a safety run-in phase and an expansion phase where participants are assigned to different dose groups without randomization. Linvoseltamab is given according to the study protocol, with dosing schedules designed to monitor effects and side effects. During the study, participants will be closely monitored through regular safety observations over 35 days and longer-term assessments up to 5.5 years. Researchers will track adverse events, treatment responses including complete response rates, laboratory results, and the presence of antibodies against the drug. Blood levels of linvoseltamab are measured up to 9 months. This comprehensive monitoring will help understand the drugs impact and safety over time.

A Proof-of-Concept Study to Learn Whether Linvoseltamab Can Eliminate Abnormal Plasma Cells That May Lead to Multiple Myeloma in Adult Patients With High-Risk Monoclonal Gammopathy of Undetermined Significance or Non-High-Risk Smoldering Multiple Myeloma