A Study of JNJ-87562761 in Participants With Relapsed or Refractory Multiple Myeloma

Exclusion Criteria8

• Active plasma cell leukemia, Waldenström's macroglobulinemia, POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes), or immunoglobulin light chain amyloidosis
• Prior allogeneic transplant within 6 months before the start of study treatment administration or autologous transplant within 12 weeks before the start of study treatment administration
• Live, attenuated vaccine within 4 weeks before the first dose of study treatment
• Central Nervous System (CNS) involvement or clinical signs of meningeal involvement of multiple myeloma. If either is suspected, brain magnetic resonance imaging (MRI) and lumbar cytology are required
• Non-hematologic toxicity from prior anticancer therapy that has not resolved to baseline level or to less than or equal to (\<=) Grade 1 (except alopecia, tissue post-RT fibrosis, or Grade \< 3 peripheral neuropathy)
• Received a cumulative dose of corticosteroids equivalent to greater than or equal to (\>=) 140 mg of prednisone within the 14-day period before the start of study treatment administration
• Prior antitumor therapy in the specified time frame prior to the first dose of study treatment: (Targeted therapy, epigenetic therapy, monoclonal antibody treatment, or treatment with an investigational drug or an invasive investigational medical device or conventional chemotherapy within 21 days, gene-modified adoptive cell therapy or treatment with anti-CD38 directed therapies within 3 months, proteasome inhibitor \[PI\] therapy or radiotherapy within 14 days, or immunomodulatory drug (IMiD) agent therapy within 7 days)
• Following medical conditions: pulmonary compromise requiring supplemental oxygen use to maintain adequate oxygenation, human immunodeficiency (HIV) infection (participants with a detectable viral load or low CD4 count), active hepatitis B or C infection, active autoimmune disease requiring systemic immunosuppressive therapy within 6 months before start of study treatment, serious uncontrolled ongoing viral or bacterial or systemic fungal infection, cardiac conditions (myocardial infarction \<=6 months prior to enrollment, New York Heart Association stage III or IV congestive heart failure, et cetera \[etc.\])