The primary purpose of this study for Part 1 (Dose Escalation) is to identify the safe effective dose (recommended Phase 2 doses \[RP2Ds\]) and schedule for JNJ-79635322 treatment regimen in combination with daratumumab with or without lenalidomide or with pomalidomide; and for Part 2 (Dose Expansion) is to further characterize the safety and tolerability of JNJ-79635322 combination treatment regimens at selected RP2D(s).
Have documented initial diagnosis of multiple myeloma according to IMWG diagnostic criteria
Meet treatment regimen-specific requirements as follows: Treatment regimen A (JNJ-79635322+daratumumab):Treatment regimens A1 and A3: Have been treated with 1 to 3 prior lines of therapy, including a proteasome inhibitor (PI) and an inhibitor, immunomodulatory drug (IMiD) therapy for the treatment of multiple myeloma (MM); Treatment regimens A2 and A4: Newly diagnosed MM naïve to multiple myeloma (or other related plasma cell neoplasm)-directed treatments; Treatment regimen B (JNJ-79635322+pomalidomide): Have received greater than or equal to (>=) 1 prior line of therapy, including a PI and lenalidomide, and are lenalidomide refractory OR >=2 prior lines of therapy, including a PI and lenalidomide; Treatment Regimens C, D, and E: Newly diagnosed MM naïve to multiple myeloma (or other related plasma cell neoplasm)-directed treatments
Have a weight >=40 kilograms
Must have an Eastern Cooperative Oncology Group status of 0 or 2
Any serious underlying medical conditions, such as: a) Evidence of active viral, bacterial, or systemic fungal infection requiring ongoing antiviral, antibacterial, or antifungal treatment. b) Active autoimmune disease requiring systemic immunosuppressive therapy within 6 months before start of study treatment. c) Cardiac conditions (myocardial infarction, unstable angina, or coronary artery bypass graft <=6 months prior to enrollment; New York heart association stage III or IV congestive heart failure et cetera)
Prior antitumor therapy as follows, in the specified time frame prior to the first dose of study treatment: a) Targeted therapy, epigenetic therapy, monoclonal antibody (mAb) treatment, or treatment with an investigational drug or an invasive investigational medical device within 21 days or 5 half-lives, whichever is less. b) Gene-modified adoptive cell therapy (example, chimeric antigen receptor [CAR] modified T cells, natural killer cells) within 90 days. c) Prior anti-CD38 directed therapy within 90 days (for treatment regimens A, C, D and E only; within 21 days for treatment regimen B). d) Conventional chemotherapy within 21 days. e) PI therapy within 14 days. f) Immunomodulatory agent therapy within 7 days. g) Radiotherapy within 14 days
Stem cell transplantation: a) Allogeneic stem cell transplant within 6 months before the first dose of study treatment. b) Received an autologous stem cell transplant less than or equal to (<=)12 weeks before the first dose of study treatment
Nonhematologic toxicity from prior anticancer therapy that has not resolved to baseline level or to grade <=1 (except alopecia, tissue post-RT fibrosis [any grade] or peripheral neuropathy grade <=3)