A Study of Venetoclax in Combination With Isatuximab and Dexamethasone for Relapsed/Refractory Multiple Myeloma

Participant has a history of intolerability to any of the study drugs

Participant has any of the following conditions: amyloidosis, POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes), known human immunodeficiency viral (HIV) infection, active hepatitis B or C infection based on blood screen tests, significant cardiovascular disease, including uncontrolled angina, severe or uncontrolled arrhythmia, recent myocardial infarction within 6 months of screening, or congestive heart failure New York Heart Association (NYHA) Class greater than or equal to 3, Major surgery within 4 weeks prior to screening, acute infections requiring parenteral therapy (antibiotic, antifungal, or antiviral) within 14 days prior to screening, uncontrolled diabetes or uncontrolled hypertension within 14 days prior to screening, any other medical condition that, in the opinion of the Investigator, would adversely affect the participant's participation in the study

Participant has a history of other active malignancies, including myelodysplastic syndrome (MDS), within the past 3 years prior to study entry, with the following exceptions: previous malignancy with no evidence of disease confined and surgically resected (or treated with other modalities) with curative intent and unlikely to impact survival during the duration of the study

If participant had prior allogeneic stem cell transplant (SCT), participant has evidence of ongoing graft-versus-host disease (GvHD)