**Relapsed and Refractory Multiple Myeloma (RRMM)** is a type of blood cancer that comes back or doesn't respond to treatment. This study is testing a new pill, called **KTX-1001**, to see if it's safe and works well for people with RRMM. The pill blocks a protein called MMSET, which helps cancer grow. The study has two parts. In Part A, researchers check for side effects and find the best dose. In Part B, they test this dose on patients with certain genetic changes to see how safe and effective it is.
- Study Length: Cycle 1 lasts 28 days for dose finding.
- Visits: Regular check-ups needed to monitor safety and effectiveness.
- Eligibility: Must be 18+, have RRMM, and meet specific health criteria.
People can't join if they've had recent treatments, certain health conditions, or other active cancers. This study helps understand if KTX-1001 can be a new option for patients with this challenging condition.