Clinical trial Recruiting at 92 sites Phase 3 Interventional Ages 18 to 99

Long-term test of maridebart cafraglutide in people who are overweight or have obesity

Official title: A Phase 3, Randomized, Double-Blind Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide in Participants With Obesity or Overweight

Run by Amgen · NCT07684235 · Data updated 2026-11-12

This trial tests maridebart cafraglutide versus placebo to see if long-term treatment helps people who are overweight or obese manage weight safely and tolerably.

More Obesity trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 99 Years
SexAll
Enrollment3200 (estimated)
SponsorAmgen
Industry-sponsored
Locations92 sites (Anniston, Alabama and 91 other locations)
StatusRecruiting
StartedJuly 23, 2026
Main results expectedDecember 26, 2027
Study endsMarch 19, 2028
Registry record updatedOctober 5, 2026
Trial IDNCT07684235 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with obesity or overweight who completed the parent trial and its 72-week visit, meet contraception requirements, and have not permanently discontinued the intervention.

Probably not a fit

Individuals who do not respond to the medication, cannot tolerate it, or do not fit the long-term safety criteria may not benefit.

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

What this trial studies

This is a Phase 3 extension study evaluating the long-term efficacy, safety, and tolerability of maridebart cafraglutide in adults with obesity or overweight who completed a prior trial. Participants will be randomized to receive maridebart cafraglutide or placebo with continued monitoring for extended outcomes beyond the original study period. The study includes adults who completed the parent trial, adhered to the protocol, and agree to contraception during treatment and for 16 weeks after the last dose. Exclusion criteria include planned obesity-related procedures, BMI ≤ 18.5, hypersensitivity to study components, history of ischemic optic neuropathy, or malignancies treated conservatively in the prior trial. Primary sponsor is Amgen, with multiple sites in Alabama recruiting eligible participants.

Why it matters

Potential benefit: If successful, participants could experience sustained weight loss and improved safety/tolerability with maridebart cafraglutide over the long term.

How similar studies have gone: Prior trials with similar long-term weight management therapies have shown potential benefits, though the extension nature of this study adds new long-duration data.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed informed consent form (ICF) which includes compliance with the requirements and restrictions listed in the ICF and in this protocol.
* Completed the parent trial (2010181)
* Completed week 72 visit in parent trial
* Did not permanently discontinue trial intervention in parent trial
* Randomized within 7 Days of week 72 visit in the parent trial
* Participants must use protocol-specified contraception during treatment, and for an additional 16 weeks after the last dose of trial intervention

Exclusion Criteria:

* Planned (during the trial) surgical, endoscopic, or device-based treatment for obesity
* Body mass index ≤ 18.5 kilograms per meter square (kg/m\^2)
* Participant has known sensitivity to any of the products or components to be administered during dosing
* History of ischemic optic neuropathy
* Any malignancy diagnosed during parent trial (20210181) except for the following treated with curative intent: nonmelanoma skin cancers, breast ductal carcinoma in situ, cervical carcinoma in situ, or prostate cancer in situ.
* Newly identified (i.e., identified during 20210181) multiple endocrine neoplasia syndrome type 2 or family (first-degree relative\[s\]) history of medullary thyroid cancer.
* Patient Health Questionnaire-9 (PHQ-9) score of ≥ 15 at week 72 visit from parent trial before randomization
* Any suicidal ideation of category 4 or 5 OR any suicidal behavior on the Columbia-Suicide Severity Rating Scale (C-SSRS) Since Last Visit version at week 72 visit from parent trial before randomization.
* Participant unlikely to be able to complete all protocol-required procedures, restrictions and requirements, in the judgment of the individual and investigator.
* History or evidence of any other clinically significant disorder, condition, or disease (including, but not limited to known drug or alcohol abuse, eating disorders, and conditions identified during the parent trial) that, in the opinion of the investigator, would pose a risk to participant safety.
* Currently pregnant (confirmed with positive pregnancy test) or breastfeeding or
* Planning to become pregnant or breastfeed while on trial until an additional 16 weeks after the last dose of trial intervention.
* Major surgical procedures planned during the trial.
* Participants with minor surgical procedures (not requiring general anesthesia or deep sedation) planned during the trial may be eligible at the discretion of the investigator.
* Investigative site personnel directly affiliated with the trial and/or their immediate family (ie, spouse, parent, child, or sibling, whether biological or legally adopted).

Where it's running

  • Pinnacle Research Group LLC
    Anniston, Alabama, United States
    Recruiting
  • Alliance For Multispecialty Research - Daphne
    Daphne, Alabama, United States
    Recruiting
  • Alliance for Multispecialty Research Mobile
    Mobile, Alabama, United States
    Recruiting
  • Ark Clinical Research- Tustin
    Fountain Valley, California, United States
    Recruiting
  • Long Beach Clinical Trials Services Inc
    Long Beach, California, United States
    Recruiting
  • Ark Clinical Research- Long Beach
    Long Beach, California, United States
    Recruiting
Show 44 more locations
  • Catalina Research Institute
    Montclair, California, United States
    Recruiting
  • Artemis Institute for Clinical Research
    Riverside, California, United States
    Recruiting
  • Artemis Institute for Clinical Research
    San Diego, California, United States
    Recruiting
  • Apex Clinical Research
    San Diego, California, United States
    Recruiting
  • Southern California Clinical Research
    Santa Ana, California, United States
    Recruiting
  • Diablo Clinical Research
    Walnut Creek, California, United States
    Recruiting
  • Chase Medical Research LLC
    Waterbury, Connecticut, United States
    Recruiting
  • Jacksonville Center for Clinical Research
    Jacksonville, Florida, United States
    Recruiting
  • Clinical Neuroscience Solutions - Jacksonville
    Jacksonville, Florida, United States
    Recruiting
  • South Florida Wellness and Clinical Research Institute
    Lauderhill, Florida, United States
    Recruiting
  • Optimus U Corporation
    Miami, Florida, United States
    Recruiting
  • Research Institute of South Florida
    Miami, Florida, United States
    Recruiting
  • Indago Research and Health Center
    Miami Lakes, Florida, United States
    Recruiting
  • Renstar Medical Research
    Ocala, Florida, United States
    Recruiting
  • Clinical Neuroscience Solutions - Orlando
    Orlando, Florida, United States
    Recruiting
  • Combined Research Orlando Phase I IV
    Orlando, Florida, United States
    Recruiting
  • Florida Institute for Clinical Research
    Orlando, Florida, United States
    Recruiting
  • Encore Medical Research of Weston LLC
    Weston, Florida, United States
    Recruiting
  • Center for Advanced Research and Education
    Gainesville, Georgia, United States
    Recruiting
  • Rophe Adult and Pediatric Medicine/Sky Clinical Research Network Group
    Union City, Georgia, United States
    Recruiting
  • East-West Medical Research
    Honolulu, Hawaii, United States
    Recruiting
  • Solaris Clinical Research
    Meridian, Idaho, United States
    Recruiting
  • Flourish Research - Great Lakes Clinical Trials
    Chicago, Illinois, United States
    Recruiting
  • Endeavor Health
    Skokie, Illinois, United States
    Recruiting
  • Evanston Premier Healthcare Research LLC
    Skokie, Illinois, United States
    Recruiting
  • JCCT- Juno Northwest Houston
    Lenexa, Kansas, United States
    Recruiting
  • Alliance for Multispecialty Research Newton
    Newton, Kansas, United States
    Recruiting
  • Louisville Metabolic and Atherosclerosis Research Center
    Louisville, Kentucky, United States
    Recruiting
  • Velocity Clinical Research - Baton Rouge
    Baton Rouge, Louisiana, United States
    Recruiting
  • Tandem Clinical Research - Marrero
    Marrero, Louisiana, United States
    Recruiting
  • Headlands Research - Detroit
    Southfield, Michigan, United States
    Recruiting
  • Prime Health and Wellness Sky Clinical Research Network Group
    Fayette, Mississippi, United States
    Recruiting
  • Alliance for Multispecialty Research - Kansas City
    Kansas City, Missouri, United States
    Recruiting
  • Vector Clinical Trials
    Las Vegas, Nevada, United States
    Recruiting
  • Palm Research Center Inc
    Las Vegas, Nevada, United States
    Recruiting
  • Velocity Clinical Research- Binghamton
    Binghamton, New York, United States
    Recruiting
  • Rochester Clinical Research
    Rochester, New York, United States
    Recruiting
  • Accellacare of Hickory
    Hickory, North Carolina, United States
    Recruiting
  • Carolina Research Center Inc
    Shelby, North Carolina, United States
    Recruiting
  • Clinical Trial Investigator Clinical Research Center
    Cincinnati, Ohio, United States
    Recruiting
  • Velocity Clinical Research - Cincinnati
    Cincinnati, Ohio, United States
    Recruiting
  • Alliance for Multispecialty Research - Norman
    Norman, Oklahoma, United States
    Recruiting
  • Capital Area Research LLC
    Newport, Pennsylvania, United States
    Recruiting
  • Velocity Clinical Research - Providence
    East Greenwich, Rhode Island, United States
    Recruiting

+42 more sites. See ClinicalTrials.gov for the full list.

Study contacts

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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.