Inclusion criteria :

          -  Participant must be at least 18 years of age or of the country's legal age of majority
             if the legal age is >18 years old, at the time of signing the informed consent.

          -  Participant has given voluntary written informed consent.

          -  Participant has been previousy diagnosed with multiple myeloma based on standard
             criteria.

          -  Part A: (1) participant has received at least 3 prior lines of therapy for multiple
             myeloma, or at least 2 prior lines of therapy if at least 1 of those lines consisted
             of 2 or more multi-agent regimens (eg, multi-agent induction regimen with autologous
             stem cell transplantation, followed by maintenance regimen). (2) Prior therapy for
             multiple myeloma has included at least 1 proteasome inhibitor (bortezomib,
             carfilzomib, ixazomib), at least 1 immunomodulatory agent (lenalidomide, thalidomide,
             pomalidomide), at least 1 anti-CD38 monoclonal antibody and at least 1 steroid.
             Applicable countries in EU and Asia can enroll anti-CD38 naive RRMM patients from DL4
             and onwards. (3) Participant had at least a minimal response (MR) to the anti-CD38
             antibody containing regimen and had last dose of anti-CD38 monoclonal antibody at
             least 9 months prior to study entry. Applicable countries in EU and Asia can enroll
             anti-CD38 naive RRMM patients from DL4 and onwards.

          -  Part B and the last cohort(s) of Part A: (1) participant has received at least 3 prior
             lines of therapy for multiple myeloma, or at least 2 prior line of therapy if at least
             1 of those lines consisted of 2 or more multi-agent regimens (eg, multi-agent
             induction regimen with autologous stem cell transplantation, followed by maintenance
             regimen). (2) Prior therapy for multiple myeloma has included at least 1 proteasome
             inhibitor (bortezomib, carfilzomib, ixazomib), at least 1 immunomodulatory agent
             (lenalidomide, thalidomide, pomalidomide) and at least 1 steroid. (3) Prior therapy
             has not included an anti-CD38 monoclonal antibody.

          -  Participant has myeloma disease progression on or after last therapy.

          -  Participant must have measurable disease as defined as at least one of the following:

               -  Serum M protein ≥0.5 g/dL (≥5 g/L)

               -  Urine M protein ≥200 mg/24 hours

               -  Serum FLC assay: Involved FLC assay ≥10 mg/dL (≥100 mg/L) and an abnormal serum

               -  FLC ratio (<0.26 or >1.65).

          -  A male participant must agree to use contraception during the intervention period and
             for at least 150 days after the last dose of study drug and refrain from donating
             sperm during this period.

          -  A female participant is eligible to participate if she is not pregnant, not
             breastfeeding, and at least one of the following conditions applies:

               -  Not a woman of childbearing potential (WOCBP)

               -  A WOCBP who agrees to follow the contraceptive guidance during the intervention
                  period and for at least 150 days after the last dose of study intervention.

        Exclusion criteria:

          -  Participant is diagnosed or treated for another malignancy within 3 years prior to
             enrollment, with the exception of basal cell carcinoma or squamous cell carcinoma of
             the skin, an in situ malignancy, superficial bladder carcinoma or low risk prostate
             cancer.

          -  Participant has an Eastern Cooperative Oncology Group (ECOG) performance status score
             >2.

          -  Participant has a history of Chronic obstructive pulmonary disease (COPD) or asthma.

          -  Participant has not recovered from adverse reactions to prior myeloma treatment or
             procedures (chemotherapy, immunotherapy, radiation therapy) to NCI CTCAE Grade ≤1 or
             baseline (exception: alopecia).

          -  Participant has congestive heart failure (New York Heart Association) Grade ≥II;
             cardiac myopathy, active ischemia, or any other uncontrolled cardiac condition such as
             angina pectoris, clinically significant arrhythmia requiring therapy including
             anticoagulants, or clinically significant uncontrolled hypertension, QT interval
             corrected by the Fridericia method >480 msec (Grade ≥2).

          -  Participant has had acute myocardial infarction within 6 months before first dose of
             study medication.

          -  Participant has ongoing sensory or motor neuropathy of National Cancer Institute
             Common Terminology Criteria for Adverse Events (NCI CTCAE) Grade ≥3.

          -  Participant has active autoimmune disease including autoimmune hemolytic anemia,
             idiopathic thrombocytopenic purpura, inflammatory bowel syndrome, pneumonitis or any
             chronic condition requiring a higher corticosteroid systemic equivalent than
             prednisone 10 mg daily.

          -  Known acquired immunodeficiency syndrome (AIDS) or related illnesses or human
             immunodeficiency virus (HIV) disease requiring antiretroviral treatment, or to have
             active hepatitis A, B (defined as a known positive hepatitis B surface antigen (HBsAg)
             result or positive HepB DNA), or C (defined as a known quantitative hepatitis C [HCV]
             ribonucleic acid RNA results greater than the lower limits of detection of the assay
             or positive HCV antigen) infection.

          -  Participant has positive Coombs test at baseline.

        The above information is not intended to contain all considerations relevant to a patient's
        potential participation in a clinical trial.