A Study to Examine the Effects of Novel Therapy Linvoseltamab in Combination With Other Cancer Treatments for Adult Patients With Multiple Myeloma That is Resistant to Current Standard of Care Treatments

Exclusion Criteria37

• Diagnosis of plasma cell leukemia, primary light-chain amyloidosis (excluding myeloma associated amyloidosis), Waldenström macroglobulinemia (lymphoplasmacytic lymphoma), or POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes)
• Participants with known MM brain lesions or meningeal involvement
• Treatment with any systemic anti-myeloma therapy within 5 half-lives or within 21 days prior to first administration of study drug regimen, whichever is shorter
• History of allogeneic and autologous stem cell transplantation, as described in the protocol
• Unless stated otherwise in a specific sub-protocol, prior treatment with a T cell-based immunotherapy directed against BCMA bispecific antibodies and bispecific T-cell engagers (BiTEs), and BCMA chimeric antigen receptor (CAR) T cells (Note: BCMA antibody-drug conjugates are not excluded)
• History of progressive multifocal leukoencephalopathy, neurodegenerative condition or central nervous system (CNS) movement disorder or participants with a history of seizure within 12 months prior to study enrollment are excluded
• Live or attenuated vaccination within 28 days prior to first study drug regimen administration with a vector that has replicative potential
• Cardiac ejection fraction \<40% by echocardiogram (Echo) or multigated acquisition (MUGA) scan.
• Cohort 2:
• \. Dose expansion: Prior treatment with a B-cell maturation antigen (BCMA) -directed CAR T-cell therapy will not be exclusionary if completed at least 12 weeks prior to first study treatment
• Cohort 3:
• \. Known malabsorption syndrome or pre-existing gastrointestinal (GI) condition that may impair absorption of lenalidomide; delivery of lenalidomide via nasogastric tube or gastrostomy tube is not allowed.
• Cohort 4:
• \. Peripheral neuropathy grade ≥2
• Cohort 5:
• \. Known malabsorption syndrome or pre-existing GI conditions that may impair absorption of pomalidomide; delivery of pomalidomide via nasogastric tube or gastrostomy tube is not allowed.
• Cohort 7:
• Prior treatment with anti-lymphocyte activation gene 3 (LAG-3) agents. Prior exposure to vaccine therapies or other immune checkpoint modulating therapies such as anti-programmed cell death protein 1 (PD-1) antibodies is permitted, as described in the protocol.
• Ongoing or recent (within 2 years) evidence of an autoimmune disease that has required systemic treatment with immunosuppressive agents, as described in the protocol.
• Prior solid organ transplant.
• History of grade ≥3 immune-mediated adverse events (with the exclusion of endocrinopathies that are fully controlled by hormone replacement) from prior checkpoint inhibitor therapies.
• Cohort 8:
• Prior treatment with anti-PD-1 or anti-PD-L1 agents. Prior exposure to vaccine therapies or other immune checkpoint modulating therapies such as anti-cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) antibodies is permitted, as described in the protocol.
• Encephalitis or meningitis in the year prior to enrollment.
• History of interstitial lung disease (eg, idiopathic pulmonary fibrosis or organizing pneumonia), of active, noninfectious pneumonitis that required immune-suppressive doses of glucocorticoids to assist with management, or of pneumonitis within the last 5 years. A history of radiation pneumonitis in the radiation field is permitted as long as pneumonitis resolved ≥6 months prior to enrollment.
• Ongoing or recent (within 2 years) evidence of an autoimmune disease that has required systemic treatment with immunosuppressive agents, as described in the protocol.
• Prior solid organ transplant.
• History of grade ≥3 immune-mediated adverse events (with the exclusion of endocrinopathies that are fully controlled by hormone replacement) from prior checkpoint inhibitor therapies.
• Cohort 9:
• Abnormal QT interval corrected by Fridericia's formula (QTcF), as described in the protocol
• Use of concomitant medications that are known to prolong the QT/QTcF interval including Class Ia and Class III antiarrhythmics at the time of informed consent
• Ongoing use or anticipated use of food or drugs that are known strong/moderate cytochrome P450 (CYP)3A4 inhibitors, or strong CYP3A inducers within 14 days prior to first dose of nirogacestat
• Known malabsorption syndrome or existing gastrointestinal GI condition that may impair absorption of nirogacestat; delivery of nirogacestat via nasogastric tube or gastrostomy tube is not allowed.
• Cohort 10:
• Known or suspected active Epstein-Barr virus (EBV) infection.
• Known history of Hemophagocytic lymphohistiocytosis/Macrophage activation syndrome (HLH/MAS).
• Prior treatment with cevostamab or another agent with the same target \[Fragment crystallizable receptor-like 5 (FcRH5)\].