NCT06832865

ELISA in Relapsed/Refractory MM

A Phase 2 Study of Elranatamab in Combination With Isatuximab (ELISA) in Relapsed and Refractory Multiple Myeloma

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Massachusetts General Hospital · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

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.

Detailed description

This phase 2, single center, open-label study will enroll 30 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). Participants with prior therapy with anti-CD38 and anti-B cell maturation antigen (BCMA) target except an anti-BCMA T cell engager (TCE) may be eligible. This research is being done to see if the study drugs, elranatamab and isatuximab-irfc, reduce the risk of worsening disease and to evaluate the possible risks of the study drugs. Elranatamab is an FDA approved treatment for RRMM. Isatuximab is FDA approved as a treatment option for RRMM when administered intravenously (IV), however isatuximab will be administered as a subcutaneous (SC) infusion (injected under the skin) in this study which is not FDA approved and is investigational. Isatuximab will be administered subcutaneously using an investigational device called the on-body delivery system. The first six patients who complete Cycles 1 and 2 will be assessed for safety and adverse events prior to enrolling all other patients. The research involves screening for eligibility, study treatment and study visits, and follow-up visits. In the beginning (Day 1) of Cycle 1, there may be a 2-8 day inpatient visit so participants can be monitored during their first dose of isatuximab + elranatamab. Participants will receive study treatment until disease progression, unacceptable toxicity, or withdrawal, and will be followed every 3 months for 5 years after their final dose.

Conditions

• Relapsed Refractory Multiple Myeloma (RRMM)
• Relapsed Refractory Multiple Myeloma

Interventions

Type	Name	Description
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.

Timeline

• Start date: 2025-08-14
• Primary completion: 2026-12-01
• Completion: 2028-12-01
• First posted: 2025-02-18
• Last updated: 2026-03-12

Locations

3 sites across 1 country: United States

Regulatory

• FDA-regulated drug study
• FDA-regulated device study