Clinical trial Recruiting at 12 sites Phase 1 Interventional Ages 18 and up

Cemsidomide plus elranatamab for relapsed or refractory multiple myeloma

Official title: A Phase 1B, Open-label, Multicenter Study to Evaluate the Safety and Preliminary Efficacy of Cemsidomide in Combination With Elranatamab in Relapsed/Refractory Multiple Myeloma Subjects

Run by C4 Therapeutics, Inc. · NCT07280013 · Data updated 2026-11-12

This will try giving cemsidomide pills together with elranatamab injections to see if the combination is safe and helps people with relapsed or refractory multiple myeloma.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment60 (estimated)
SponsorC4 Therapeutics, Inc.
Industry-sponsored
Drugs / interventionsCAR-T, elranatamab
Locations19 sites (Gilbert, Arizona and 18 other locations)
StatusRecruiting
StartedFebruary 6, 2026
Main results expectedDecember 2028
Study endsJune 2029
Registry record updatedOctober 30, 2026
Trial IDNCT07280013 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with measurable relapsed or refractory multiple myeloma, ECOG 0–2, and who have received the required prior lines of therapy (2–4 for escalation, 1–3 for expansion).

Probably not a fit

Patients who previously received BCMA-directed T-cell engagers or CAR-T therapy, have active uncontrolled infections, recent stem-cell transplant, or other excluded plasma cell disorders are unlikely to be eligible and thus may not benefit from this trial.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1 study tests escalating oral doses of cemsidomide given 14 days on/14 days off in combination with subcutaneous elranatamab administered twice monthly to determine safety and tolerability in patients with relapsed or refractory multiple myeloma. The trial begins with a dose-escalation portion exploring about three dose levels of cemsidomide, followed by an expansion cohort at a selected safe dose to further evaluate tolerability and early anti-myeloma activity. Dexamethasone is given weekly for up to four cycles until a confirmed response, and participants must have measurable disease and meet prior-therapy requirements. Key exclusion criteria include prior BCMA-directed T-cell engager or CAR-T therapy, recent transplant, active uncontrolled infections, and certain plasma cell disorders.

Why it matters

Potential benefit: If successful, the combination could offer a new treatment option that controls disease for some patients who have relapsed or become refractory to prior therapies.

How similar studies have gone: Other early-phase studies of BCMA-targeting bispecific antibodies and combinations with cereblon modulators have shown promising response signals, but combining cemsidomide with elranatamab is a relatively new approach still under study.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosis of multiple myeloma as defined by IMWG criteria
* Measurable disease based on IMWG criteria
* Received 2-4 prior lines of therapy (escalation part) and 1-3 prior lines of therapy (expansion part) for multiple myeloma, consisting of at least 1 immunomodulatory drug (i.e., IKZF 1/3 degrader)
* ECOG performance status 0-2

Exclusion Criteria:

* Active plasma cell leukemia, Smoldering multiple myeloma, POEMS Syndrome, systemic light chain amyloidosis, MDS
* Stem cell transplant within 12 weeks prior to enrollment or active graft vs host disease
* Participants with any active, uncontrolled bacterial, fungal, or viral infection
* Prior treatment with a BCMA-directed TCE or BCMA-directed CAR-T therapy
* Administration with an investigational product within 30 days preceding the first dose of study intervention
* Inability or difficulty swallowing tablets, malabsorption syndrome, or any disease or medical condition significantly affecting gastrointestinal function

Where it's running

  • Banner MD Anderson Cancer Center
    Gilbert, Arizona, United States
    Recruiting
  • UC Davis Comprehensive Cancer Center
    Sacramento, California, United States
    Recruiting
  • UCLA Health, Jonsson Comprehensive Cancer Center
    Santa Monica, California, United States
    Recruiting
  • Winship Cancer Institute, Emory University
    Atlanta, Georgia, United States
    Recruiting
  • Norton Cancer Institute St. Matthews
    Louisville, Kentucky, United States
    Recruiting
  • University of Maryland Greenbaum Comprehensive Cancer Center
    Baltimore, Maryland, United States
    Recruiting
Show 13 more locations
  • START Midwest
    Grand Rapids, Michigan, United States
    Recruiting
  • Dartmouth-Hitchcock Medical Center
    Lebanon, New Hampshire, United States
    Recruiting
  • Perlmutter Cancer Center at NYU Langone Hospital
    Brooklyn, New York, United States
    Recruiting
  • Memorial Sloan Kettering Cancer Center
    New York, New York, United States
    Recruiting
  • Duke Cancer Center
    Durham, North Carolina, United States
    Recruiting
  • Houston Methodist Hospital
    Houston, Texas, United States
    Recruiting
  • University of Miami
    Miami, Florida, United States
    Not yet recruiting
  • Loyola University Medical Center
    Maywood, Illinois, United States
    Not yet recruiting
  • Indiana University
    Indianapolis, Indiana, United States
    Not yet recruiting
  • University of Nebraska
    Omaha, Nebraska, United States
    Not yet recruiting
  • Ohio State University Comprehensive Cancer Center
    Columbus, Ohio, United States
    Not yet recruiting
  • Baylor University Medical Center
    Dallas, Texas, United States
    Not yet recruiting
  • Huntsman Cancer Institute, University of Utah
    Salt Lake City, Utah, United States
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Elranatamab given as outpatient in relapsed or refractory multiple myeloma

    This study tests a bispecific antibody called elranatamab, given in an outpatient setting to adults with relapsed or refractory multiple myeloma who have had prior therapies.

    Recruiting at 6 sites Phase 2 SCRI Development Innovations, LLC · Denver, Colorado and 5 other locations · NCT07637578

  • Cognitive changes after BCMA CAR-T in multiple myeloma

    This study tests whether cognitive function changes over time in adults with relapsed or refractory multiple myeloma who receive BCMA CAR-T therapy.

    Recruiting Wake Forest University Health Sciences · Charlotte, North Carolina · NCT07740317

  • GPRC5D-targeted PET/CT imaging in plasma cell disorders

    This study tests a new GPRC5D-targeted PET/CT imaging method in adults with plasma cell disorders to see if it detects disease better or differently than standard imaging.

    Recruiting Phase 1 Peking University First Hospital · Beijing, Beijing Municipality · NCT07660939

  • Gustabor: Tailored AI Nutrition for Taste Changes During Cancer Therapy

    This trial tests whether personalized, AI-assisted dietary advice helps people with taste changes from cancer treatment compare to general dietary guidance.

    Recruiting at 2 sites Wuerzburg University Hospital · Augsburg, Bavaria and 5 other locations · NCT07649681

  • Personalising Myeloma Treatment Based on Initial Response and Fitness

    This trial tests whether adjusting treatment after six months of the standard DRd therapy, based on a patient’s response and fitness, can improve outcomes for older, transplant-ineligible patients with myeloma.

    Recruiting Phase 3 University of Leeds · Bristol and 4 other locations · NCT07649525

  • Elranatamab consolidation for newly diagnosed plasmablastic lymphoma

    This study tests whether giving Elranatamab after initial chemotherapy can help patients with plasmablastic lymphoma, with or without HIV, stay in remission.

    Recruiting Phase 1 University of Illinois Chicago · Chicago, Illinois · NCT07647432

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.