Cevostamab in Combination With Pomalidomide and Dexamethasone Versus Standard of Care in Participants With Previously Treated Multiple Myeloma

Inclusion Criteria: * Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1 at screening and immediately prior to start of administration of study treatment. * Individuals with ECOG Performance Status of 2 solely due to local symptoms of myeloma (e.g., pain) are eligible * MM diagnosis according to the International Myeloma Working Group (IMWG) diagnostic criteria * Received one to three lines of prior therapy that included at least two consecutive cycles of either of the following: A regimen containing an anti-CD38 therapy, a regimen containing lenalidomide * Participants must have measurable disease during screening Exclusion Criteria: * Known history of amyloidosis (e.g., positive Congo Red stain or equivalent in tissue biopsy or documented within serum amyloid P component scan) * Plasma cell leukemia or circulating plasma cell count exceeding 500 cells/liter (L) or 5% of the peripheral blood white cells * GI disease that might significantly alter absorption of oral drugs * Participants must not have any ongoing CNS disease or non-secretory myeloma