This clinical trial is focused on studying a condition known as Relapsed or Refractory Multiple Myeloma, a type of blood cancer that has returned or is not responding to treatment. The study is exploring the use of a new treatment called CC-92480 (also known by its code name BMS-986348) in combination with other medications. These medications include dexamethasone, a steroid that helps reduce inflammation, tazemetostat, a drug that targets specific proteins in cancer cells, BMS-986158, and trametinib, which is used to block certain pathways that cancer cells use to grow.
The purpose of this study is to determine how safe and tolerable these combinations are for patients with Relapsed or Refractory Multiple Myeloma. Participants will receive these medications in different combinations to find the best dose and schedule. The study will monitor the safety of these treatments by observing any side effects and how often they occur. The study will also look at how well the treatments work in controlling the disease.
Participants in the study will take the medications orally, meaning they will swallow them in the form of capsules or tablets. The study will continue until the researchers gather enough information to understand the safety and effectiveness of the treatment combinations. The goal is to find the most effective and safe way to use these medications together to help manage Relapsed or Refractory Multiple Myeloma.



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