TRATTAMENTO

Teclistamab is a full-size, immunoglobin G4 proline, alanine, alanine (IgG4-PAA) bispecific antibody that targets the cluster of differentiation 3 (CD3) receptor expressed on the surface of T cells and B cell maturation antigen (BCMA). Talquetamab is a full-size, humanized IgG4-PAA bispecific antibody designed to target the CD3 receptor complex on T cells and G protein-coupled receptor class C group 5 member D (GPRC5D), which is a 7-transmembrane receptor protein that is classified as a type C G protein-coupled receptor. DRd is an approved regimen for the treatment of participants with newly diagnosed, transplant-ineligible multiple myeloma. The primary hypothesis of this study is that Tec-DR and Tal-DR will significantly improve progression free survival (PFS) or the rate of sustained minimal residual disease (MRD)-negative complete response (CR) (greater than [>]12 months) compared with DRd in participants with newly diagnosed multiple myeloma who are ineligible or not intended for autologous stem cell transplant (ASCT) as initial therapy. The study will be conducted in 3 phases: Screening, Treatment, and Follow-up. Safety Assessment includes adverse events (AEs), laboratory test results, vital sign measurements, physical examination findings, assessment of Eastern Cooperative Oncology Group (ECOG) performance status grade, and immune effector cell associated encephalopathy (ICE) score (Tec-DR and Tal-DR).