A Study of Elotuzumab in Combination With Pomalidomide and Low Dose Dexamethasone and Elotuzumab in Combination With Nivolumab in Patients With Multiple Myeloma Relapsed or Refractory to Prior Treatment With Lenalidomide.

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Inclusion Criteria:

All subjects must have documented disease progression per IMWG criteria during or after their last anti-myeloma therapy.
ECOG Performance Status less than or equal to 2
Subject Re-enrollment: This study permits the re-enrollment of a subject that has discontinued the study as a pre-treatment failure (ie, has not been treated). If re-enrolled, the subject must be re-consented.

EPd Cohort:

must have received at least 1 but no greater than 2 prior lines of therapy (note: induction and stem cell transplants with or without maintenance therapy is considered 1 line of therapy)
Subjects must have received prior treatment with a lenalidomide-containing regimen for at least 2 consecutive cycles (full therapeutic dose) and must have been deemed as relapsed, refractory, or intolerant. Refractory is defined as progressing on-treatment or within 60 days of the last dose.

EN Cohort:

Subjects must have received at least 3 prior lines of therapy including a proteasome inhibitor (PI) and an immunomodulatory (IMID) agent OR were double-refractory to both an IMID and a PI. Refractory is defined as progressing on-treatment or within 60 days of the last dose.

Exclusion Criteria:

Subjects with solitary bone or extramedullary plasmacytoma as the only evidence of plasma cells dyscrasia
Subjects with monoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myeloma (SMM), primary amyloidosis, Waldenstrom's macroglobulinemia, or POEMS syndrome (plasma cell dyscrasia with poly neuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes)
Subjects with Central Nervous System involvement with multiple myeloma

Other protocol defined inclusion/exclusion criteria could apply.