Overview
The purpose of this study is to define the safety of Ciltacabtagene Autoleucel (Cilta-cel) and Talquetamab in participants with high-risk multiple myeloma (MM).
Principal investigator
Eligibility criteria
Inclusion Criteria:
* Documented diagnosis of MM according to the IMWG diagnostic criteria and is defined as a measurable disease at screening
* Cohorts 1 and 3: Received at least 3 prior lines of antimyeloma therapy and have undergone greater than or equal to (\>=) 1 complete cycle of the therapy. Cohort 2: Be newly diagnosed MM and considered ineligible for high-dose chemotherapy with autologous stem cell transplant (ASCT)
* Cohorts 1 and 3: Documented evidence of progression of disease (PD) or failure to achieve a response to the last line of therapy
* Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
* Participant of childbearing potential (POCBP) must have a negative pregnancy test using a highly sensitive β-human chorionic gonadotropin (hCG) serum pregnancy test at screening
Exclusion Criteria:
* Cohorts 1 and 3: Prior treatment with chimeric antigen receptor T cell (CAR-T) therapy directed at any target or any prior B cell maturation antigen (BCMA)-directed therapy/prior G protein-coupled receptor family C Group 5 member D (GPRC5D)-directed therapy. Cohort 2: Received any prior therapy for MM or smoldering myeloma other than a short course of corticosteroids
* Cohorts 1 and 3: Received either of the following: An allogenic stem cell transplant within 6 months before apheresis/first dose of study drug and no immunosuppressive medications administered before the start of study treatment. And secondly, received an autologous stem cell transplant less than (\<)12 weeks before apheresis/first dose of study treatment
* Cohort 2: Received a strong cytochrome P450 (CYP450) inducer within 5 half-lives prior to daratumumab, lenalidomide and dexamethasone (DRd) induction therapy
* Receive live, attenuated vaccine within 4 weeks of enrollment
* Toxicity from previous anticancer therapy not resolved to baseline levels or to Grade 1 or less except for alopecia or peripheral neuropathy
* Documented diagnosis of MM according to the IMWG diagnostic criteria and is defined as a measurable disease at screening
* Cohorts 1 and 3: Received at least 3 prior lines of antimyeloma therapy and have undergone greater than or equal to (\>=) 1 complete cycle of the therapy. Cohort 2: Be newly diagnosed MM and considered ineligible for high-dose chemotherapy with autologous stem cell transplant (ASCT)
* Cohorts 1 and 3: Documented evidence of progression of disease (PD) or failure to achieve a response to the last line of therapy
* Eastern Cooperative Oncology Group (ECOG) performance status score of 0 or 1
* Participant of childbearing potential (POCBP) must have a negative pregnancy test using a highly sensitive β-human chorionic gonadotropin (hCG) serum pregnancy test at screening
Exclusion Criteria:
* Cohorts 1 and 3: Prior treatment with chimeric antigen receptor T cell (CAR-T) therapy directed at any target or any prior B cell maturation antigen (BCMA)-directed therapy/prior G protein-coupled receptor family C Group 5 member D (GPRC5D)-directed therapy. Cohort 2: Received any prior therapy for MM or smoldering myeloma other than a short course of corticosteroids
* Cohorts 1 and 3: Received either of the following: An allogenic stem cell transplant within 6 months before apheresis/first dose of study drug and no immunosuppressive medications administered before the start of study treatment. And secondly, received an autologous stem cell transplant less than (\<)12 weeks before apheresis/first dose of study treatment
* Cohort 2: Received a strong cytochrome P450 (CYP450) inducer within 5 half-lives prior to daratumumab, lenalidomide and dexamethasone (DRd) induction therapy
* Receive live, attenuated vaccine within 4 weeks of enrollment
* Toxicity from previous anticancer therapy not resolved to baseline levels or to Grade 1 or less except for alopecia or peripheral neuropathy
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