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Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-1-EXTENSION)

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

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07684235
Enrollment
3200
Registered
2026-07-06
Start date
2026-07-29
Completion date
2028-03-19
Last updated
2026-07-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity, Overweight

Keywords

Overweight, BMI, Obesity, Maridebart cafraglutide, Chronic weight management, MariTide, Extension, Long-Term

Brief summary

The primary objective of this trial is to evaluate the long-term efficacy, safety, and tolerability of maridebart cafraglutide in participants with obesity or overweight. Trial 20250197 is an extension of trial 20210181 (NCT06858839).

Interventions

Administered subcutaneously

DRUGPlacebo

Administered subcutaneously.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

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).

Design outcomes

Primary

MeasureTime frame
Percent Change in Body Weight from Baseline of the Parent Trial (20210181)Baseline of parent trial (20210181) to Week 48 of current trial
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Baseline of current trial up to 60 weeks

Secondary

MeasureTime frame
Percentage of Participants Achieving ≥5% Reduction in Body Weight from Baseline of the Parent TrialBaseline of parent trial to Week 48 of current trial
Percentage of Participants Achieving ≥10% Reduction in Body Weight from Baseline of the Parent TrialBaseline of parent trial to Week 48 of current trial
Percentage of Participants Achieving ≥15% Reduction in Body Weight from Baseline of the Parent TrialBaseline of parent trial to Week 48 of current trial
Percentage of Participants Achieving ≥20% Reduction in Body Weight from Baseline of the Parent TrialBaseline of parent trial to Week 48 of current trial
Change from Baseline of the Parent Trial in Waist CircumferenceBaseline of parent trial to Week 48 of current trial
Change from Baseline of the Parent Trial in the Impact of Weight on Quality of Life-Lite Clinical Trials Version (IWQOL-Lite-CT) Physical Function Composite ScoreBaseline of parent trial to Week 48 of current trial
Percent Change from Baseline in Body WeightBaseline of current trial to Week 48
Percentage of Participants with No Body Weight Gain of >3% From BaselineWeek 48 of current trial
Percentage of Participants with No Body Weight Gain of >5% From BaselineWeek 48 of current trial
Percentage of Body Weight Reduction Maintained from the Parent TrialBaseline of parent trial to Week 48 of current trial
Percentage of Participants Maintaining ≥ 80% of the Body Weight Reduction Achieved in the Parent TrialBaseline of parent trial to Week 48 of current trial

Contacts

CONTACTAmgen Call Center
medinfo@amgen.com866-572-6436
STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 7, 2026