Measurable disease confirmed by central lab at Screening, defined by at least of the following: Measurable disease defined by laboratory test results Measurable disease defined as any of the following: Measurable, secretory disease as defined by any of the following: Subjects must have measurable disease defined as at least of the following: Patients must have measurable disease defined by at least of the following measurements: Measurable disease defined as any of the following: Disease status as defined as. Measurable disease at Screening as defined by any of the following: Must have measurable disease defined by: Must have measurable disease defined by at least of the following measurements: Confirmed measurable MM based on the following: Have measurable disease by at least of the following measurements: Criteria Measurable disease with at least of the following assessed within days prior to randomization: Patient with measurable progressive disease defined by at least one of the following two measurements: Measurable disease at screening as defined per protocol. Measurable disease defined by or more of the following: Measurable disease of MM as defined by at least ONE of the following: Patients with measurable disease defined as at least one of the following: Measurable disease defined by at least ONE of the following: Patient has measurable disease defined as any of the following: Measurable disease defined as one or both of the following Measurable disease with at least of the following assessed within the days prior to randomization: Measurable disease as indicated by or more of the following: Must have had measurable disease, defined by at least of the following measurements: During the dose expansion part of the study patients must have measurable disease defined by at least of the following measurements: Must have measurable disease defined as: Patients with measurable disease defined as at least one of the following Measurable disease assessed by one of the following ? days prior to registration: For patients in the Phase II portion of the study, must have measurable disease defined by at least of the following measurements: Measurable disease, as defined by or more of the following (assessed within days prior to randomization): Measurable disease, as indicated by one or more of the following: Measurable disease defined as at least one of the following: Measurable disease defined as at least one of the following: Measurable disease defined as at least one of the following: Measurable disease, as defined by one or more of the following (assessed within days prior to randomization): Symptomatic, histologically confirmed MM, based on IMWG guidelines. Patients must have measurable disease as defined by at least one of the following: Measurable disease, including at least one of the following: Histologically confirmed MM with measurable disease per IMWG guidelines as defined by at least of the following: For Participants with MM, measurable disease defined as one of the following: