NCT06832865 · Massachusetts General Hospital
ELISA in Relapsed/Refractory MM
What this study is about
This is an where both patients and doctors know the treatment given phase 2 study of elranatamab in combination with isatuximab administered injected under the skin in patients with relapsed and refractory multiple myeloma (RRMM) who have received at least two prior lines of therapy and who have had previous treatment with both immunomodulatory drugs (IMiDs) and a proteasome inhibitor (PI).
View original scientific description
This is an open-label phase 2 study of elranatamab in combination with isatuximab administered subcutaneously in patients with relapsed and refractory multiple myeloma (RRMM) who have received at least two prior lines of therapy and who have had previous treatment with both immunomodulatory drugs (IMiDs) and a proteasome inhibitor (PI). The subcutaneous injection method of isatuximab administration, including the device used to administer isatuximab, is investigational.
Interventions
DRUG
elranatamab
Subcutaneously injected study drug, usually into the abdomen or lower stomach. Each vial of elranatamab contains a sufficient amount of product to ensure an extractable volume of 1.9 mL at a concentration of 40 mg/mL. The dosing is as follows: * Cycle 1 Day 1: 12 mg/0.3 mL * Cycle 1 Day 4: 32 mg/0.8 mL * Cycle 1 Day 8, 15, 22: 76 mg/1.9 mL * Cycles 2-6, Day 1 and 15: 76 mg/1.9 mL * Cycles 7+, Day 1: 76 mg/1.9 mL
DRUG
Isatuximab SC
Isatuximab (SAR650984) is an IgG1 derived monoclonal antibody binding selectively the human CD38 membrane protein. Subcutaneously (SC) injected study drug with each vial containing 140 mg/mL (1400 mg/10mL) isatuximab. Isatuximab SC will be injected using the investigational OBDS and in the following doses: * Cycles 2-6, Day 1 and 15: 1400 mg/10 mL * Cycles 7+ Day 1: 1400 mg/10 mL
DEVICE
Isatuximab SC-OBDS
The On Body Delivery System (OBDS) also called Isatuximab SC Wearable Injection System, is a sterile, single-use, disposable, elastomeric, user-filled investigational medical device. The OBDD has a reservoir for the drug product (isatuximab). A self-contained, integrated needle (with manual insertion and automatic retraction mechanism) is provided within the OBDS. The OBDS will be used to inject isatuximab each time the participant receives isatuximab in this study. Study drug administration will be done by trained medical professionals in the clinic. The OBDS device will be prepared by the medical professional, placed on the abdomen using the adhesive (sticky) pads that are on the device, the study drug (isatuximab) will be injected, and then the device will be removed.
Primary outcome measures
Objective response rate (ORR)
Time frame: Day 1 to 2 years post-treatment.
Objective Response will be classified using the International Myeloma Working Group (IMWG) Uniform Response criteria. The rate (ORR) will be calculated using a Simon's two-stage design to test the null hypothesis that the ORR ≤ 0.40 versus the alternative that ORR ≥ 0.60. All patients who receive at least one complete cycle of treatment will be included in a response evaluation. Participants who do not complete cycle 1 (i.e., due to disease progression or who die prior to the end of cycle 1) will not be considered evaluable for response; these participants may be replaced. In the first stage, 22 patients will be accrued. If there are 10 or fewer responses in these 22 patients, the study will be stopped. Otherwise, study will continue to enroll to a total of 30. The null hypothesis will be rejected if 16 or more responses are observed in 30 patients.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 1\. This study will enroll patients with relapsed and refractory multiple myeloma who have had at least 2 prior lines of therapy including patients who have had previous treatment with both immunomodulatory drugs (IMiDs) and a proteasome inhibitor (PI). Prior therapy with anti-CD38 and anti-B cell maturation antigen (BCMA) target will be permitted except an anti-BCMA T cell engager. Patients cannot be refractory to an anti-CD38 antibody.
- 2\. Measurable disease of multiple myeloma as defined by at least one of the following:
- a. Serum monoclonal protein ≥ 0.5 g/dL. Patients with IgD disease and lower amounts of monoclonal protein may be permitted to enroll with PI approval
- b. ≥ 200 mg of monoclonal protein in the urine on 24-hour electrophoresis
- c. Serum free light chain ≥ 100 mg/L (10 mg/dL) and abnormal serum free kappa to serum free lambda light chain (FLC) ratio (\<0.26 or \>1.65)
- 3\. Age ≥18 years. --a. The effects of elranatamab and isatux
Where
- Boston, Massachusetts
Collaborators
Pfizer, Sanofi
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 12, 2026 · Source of record for eligibility and locations