Ph I Study in Adult Patients With Relapsed or Refractory Multiple Myeloma

All patients will receive NMS-03597812 administered orally once daily on Days 1-21 in repeated 4-week cycles.

All patients will receive NMS-03597812 administered orally once daily on Days 1-21 and Dexamethasone administered orally once a week on Days 1, 8, 15 and 22 in repeated 4-week cycles.