The following criteria is provided for health care professionals.

Inclusion Criteria:

• Patients with multiple myeloma who demonstrate evidence of serologic relapse/progression while on lenalidomide maintenance given as part of first line therapy (including upfront high-dose chemotherapy followed by autologous hematopoietic cell transplantation (HCT)) without symptomatic relapse/progression. Lenalidomide maintenance is defined as single agent lenalidomide therapy of any doses up to 10 mg PO daily for up to 28 days (28-day cycle).
• Male or female patients aged ≥ 18 years old
• Ability to provide written informed consent obtained prior to participation in the study and any related procedures being performed
• Measurable disease as outlined in protocol guidelines
• Participants must meet laboratory criteria as outlined in protocol guidelines

Exclusion Criteria:

• Prior elotuzumab
• Patients with clinical relapse/progression as per the International Myeloma Working Group (IMWG) Uniform Response Criteria for Multiple Myeloma defined as one or more of the following criteria:
  • Development of new soft tissue plasmacytomas or bone lesions (osteoporotic fractures do not constitute progression)
  • Definite increase in the size of existing plasmacytomas or bone lesions. A definite increase is defined as a 50% (and ≥1 cm) increase as measured serially of the measurable lesion
  • Hypercalcaemia (>11 mg/dL);
  • Decrease in hemoglobin of ≥2 g/dL not related to therapy or other non-myeloma-related conditions;
  • Rise in serum creatinine by 2 mg/dL or more from the start of the therapy and attributable to myeloma
  • Hyperviscosity related to serum paraprotein
• Women who are pregnant or breast feeding or women of childbearing potential (WOCBP) not using an effective method of birth control. Women of childbearing potential must have a negative serum pregnancy testing within 7 days prior to the administration of drug.
• Male patients whose sexual partners are WOCBP not using effective birth control
• Patients with a prior malignancy with in the last 5 years (except for basal or squamous cell carcinoma, or in situ cancer of the cervix)
• Patients with known positivity for human immunodeficiency virus (HIV)) or hepatitis C; baseline testing for HIV and hepatitis C is not required
• Patients with a diagnosis of POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes) or plasma cell leukemia (> 2.0 × 10^9/L circulating plasma cells by standard differential)