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NCT07684144ClinicalTrials.gov

Extension Trial to Evaluate the Long-term Efficacy, Safety, and Tolerability of Maridebart Cafraglutide (MARITIME-2-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 With Type 2 Diabetes Mellitus

RecruitingTaking participants now, according to the registry record.
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In brief

The primary objective of this trial is to evaluate the long-term efficacy, safety, and tolerability of maridebart cafraglutide in participants with obesity and type 2 diabetes mellitus. Trial 20210182 is extension of trial 20210184 (NCT06858878).

Phase 3950 participants sought37 sites3 countries

Categories

Endocrine & metabolic100%

Registered in 1 registry

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Trial information is shown as published by the registry, in its original language.

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How this study is set up

The points below are drawn from the public registry record for this study. Each one cites the field or sentence it came from. A dash (—) means the record does not state something — not that it is missing or wrong. Many well-run studies, especially small ones, leave some of these blank.

  • Registered before enrolment beganFirst posted 2026-07-06; recorded start 2026-07-29
  • Has a defined primary outcomeA primary outcome measure is listed in the record
  • The primary outcome states a time frameThe primary outcome measure records a time frame
  • Participants are randomly assignedAllocation is recorded as randomised
  • Has a comparison groupThe record lists a placebo or comparator arm, or more than one study arm
  • Uses blinding (masking)A masking level is recorded in the record
  • An ethics committee is not stated in the registry recordThis registry's ingested record has no ethics-committee field
  • Regulatory oversight (such as an IND or IDE) is not stated in the registry recordThis registry's ingested record has no regulatory-authorisation field
  • A data monitoring committee is not stated in the registry recordThis registry's ingested record has no data-monitoring-committee fieldA data monitoring committee is not required for many smaller studies, and its absence here is not unusual.
  • No cost to participants is mentioned in the recordChecked the summary, description and eligibility text; no cost-to-participant phrase found
  • Sponsor has 303 other studies in this databaseCounted from the lead sponsor named in the record (Amgen)
  • Sponsor has posted results for at least one studyBased on the sponsor’s studies in this database
  • The record lists 3 conditions.
  • Lead sponsor type recorded as: industry.
  • Intervention regulatory context: investigational, within a phased regulatory pathway.

These are facts from the public registry record, not a judgement about the study. Discuss any trial with your own doctor before taking part.

What these facts mean, and what to ask · ruleset v1

Trial stature

Three independent measures of this study, described from its registry record — not a recommendation about it. A rigorous study by investigators nobody has heard of is better evidence than a weak study led by a famous one. How these are scored.

Methodological rigourSTRONG

A strong methodological design for a phase 3 study, judged from its ClinicalTrials.gov record.

How this score is built
  • Randomised allocation20/20

    Participants are randomly allocated between arms

  • Blinding13/20

    Double-blind

  • Control arm13/15

    Placebo / sham control arm

  • Primary-outcome specificity10/10

    Named primary outcome with a defined time frame

  • Endpoint type3/10

    Surrogate or intermediate endpoint (conservative default)

  • Multi-centre0/8

    Single site, or site count not stated

  • Data monitoring committee7/7

    A data monitoring committee is in place

  • Prospective registration5/5

    Registered before the study start date

  • Protocol / SAP posted0/5

    No protocol or SAP posted to the registry

ScaleMEDIUM

A medium-sized study, international in scope: 950 participants (target), run at 37 sites, across 3 countries.

How this score is built
  • Enrolment29/40

    950 participants (target)

  • Site count0/25

    Site count not stated in the record

  • Country count0/15

    Country count not stated in the record

  • Planned duration6/10

    Planned over about 20 months

  • Sponsor scale9/10

    Amgen has led 301 trials in our corpus

Investigator standingUNKNOWN

We have no verifiable track record for the investigator named on this trial. That is common for early-career investigators and for records held outside ClinicalTrials.gov — it is not a negative signal.

How this score is built
  • Investigator standing0/100

    No investigator recorded in the registry for this trial

These describe the registry record only, and today we hold ClinicalTrials.gov data. Absent fields lower a score, and absence often reflects registration practice rather than study quality. A high-stature trial is not necessarily safer or a better choice for you — enrolling in a large definitive trial can mean a higher chance of receiving placebo, while a small early-phase study may be the only route to a new therapy.

Summary

The primary objective of this trial is to evaluate the long-term efficacy, safety, and tolerability of maridebart cafraglutide in participants with obesity and type 2 diabetes mellitus. Trial 20210182 is extension of trial 20210184 (NCT06858878).

Conditions

  • Obesity
  • Overweight
  • Diabetes Mellitus, Type 2

Eligibility

SexAll
Ages18 Years – 99 Years
Healthy volunteersNo

Eligibility as written in the registry

Inclusion Criteria: * Signed informed consent form (ICF) indicating compliance with the requirements and restrictions listed in the ICF and this protocol. * Participants completing Study 20210184 must meet the following criteria: * Completed the Week 72 visit in Study 20210184. * Did not permanently discontinue the investigational product in the parent trial (20210184). * Randomized within 7 days of week 72 visit in the parent trial. * Participants must use protocol-specified contraception during treatment and for 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 (BMI) ≤ 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 the parent trial, except for the following treated with curative intent: * Nonmelanoma skin cancers * Breast ductal carcinoma in situ * Cervical carcinoma in situ * Prostate cancer in situ * Newly identified (during the parent trial) multiple endocrine neoplasia syndrome type 2, or family history (first-degree relative\[s\]) history of medullary thyroid carcinoma (MTC). * Patient Health Questionnaire-9 (PHQ-9) score ≥ 15 at the Week 72 visit from the parent trial (20210184) before randomization. * Any suicidal ideation (category 4 or 5) or any suicidal behavior on the Columbia-Suicide Severity Rating Scale (C-SSRS), Since Last Visit version, at the Week 72 visit from the 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, 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).

Eligibility in plain statements

This record's criteria have not been broken into separate statements yet. The registry text above is complete and is the authoritative version.

Study design

Study typeInterventional
PhasePhase 3
AllocationRandomised
Intervention modelPARALLEL
Primary purposeTREATMENT
MaskingDOUBLE (2)
Enrolment950 participants sought

Sponsor and collaborators

  • Amgen Sponsor

Arms and interventions

  • Maridebart Cafraglutide Low Dose Q4WEXPERIMENTAL

    Participants who received low dose of maridebart cafraglutide in the parent trial (20210184 \[NCT06858878\]) will continue to receive low dose of maridebart cafraglutide subcutaneously (SC) once in 4 weeks (Q4W).

  • Maridebart Cafraglutide Medium Dose Q4WEXPERIMENTAL

    Participants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive medium dose of maridebart cafraglutide SC Q4W.

  • Maridebart Cafraglutide Medium dose Q8WEXPERIMENTAL

    Participants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive medium dose of maridebart cafraglutide SC once in 8 weeks (Q8W).

  • Placebo Q4W (Received Medium Dose Maridebart Cafraglutide in Parent Trial)PLACEBO_COMPARATOR

    Participants who received medium dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive placebo SC Q4W.

  • Maridebart Cafraglutide High Dose Q4WEXPERIMENTAL

    Participants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive high dose of maridebart cafraglutide SC Q4W.

  • Maridebart Cafraglutide High Dose Q8WEXPERIMENTAL

    Participants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive high dose of maridebart cafraglutide SC Q8W.

  • Placebo Q4W (Received High Dose Maridebart Cafraglutide in Parent Trial)PLACEBO_COMPARATOR

    Participants who received high dose of maridebart cafraglutide in the parent trial will be re-randomized in this trial to receive placebo SC Q4W.

  • Maridebart Cafraglutide High Dose Q4W (Received Placebo in the Parent Trial)EXPERIMENTAL

    Participants who received placebo in the parent trial will receive high dose of maridebart cafraglutide SC Q4W. Prior to initiating the assigned high dose, participants will undergo a dose-escalation phase gradually increasing doses.

  • Maridebart Cafraglutide Low Dose Q4W(Received Very Low Dose Maridebart Cafraglutide in Parent Trial)EXPERIMENTAL

    Participants who permanently de-escalated to very low dose of maridebart cafraglutide in the parent trial will receive low dose of maridebart cafraglutide SC Q4W.

Interventions

  • Drug Maridebart Cafraglutide

    Administered subcutaneously.

  • Drug Placebo

    Administered subcutaneously.

Outcome measures

  1. Primary outcome

    Percent Change in Body Weight from Baseline of the Parent Trial (20210184)

    Time frame Baseline of parent trial (20210184) to Week 48 of current trial

  2. Primary outcome

    Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

    Time frame Baseline of current trial up to 60 weeks

  3. Secondary outcome

    Percentage of Participants Achieving ≥ 5% Reduction in Body Weight from Baseline of the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  4. Secondary outcome

    Percentage of Participants Achieving ≥ 10% Reduction in Body Weight from Baseline of the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  5. Secondary outcome

    Percentage of Participants Achieving ≥ 15% Reduction in Body Weight from Baseline of the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  6. Secondary outcome

    Percentage of Participants Achieving ≥ 20% Reduction in Body Weight from Baseline of the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  7. Secondary outcome

    Change from Baseline of the Parent Trial in Hemoglobin A1c

    Time frame Baseline of parent trial to Week 48 of current trial

  8. Secondary outcome

    Change from Baseline of the Parent Trial in Waist Circumference

    Time frame Baseline of parent trial to Week 48 of current trial

  9. Secondary outcome

    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 Score

    Time frame Baseline of parent trial to Week 48 of current trial

  10. Secondary outcome

    Percent Change from Baseline in Body Weight

    Time frame Baseline of current trial to Week 48

  11. Secondary outcome

    Percentage of Participants with No Body Weight Gain of >3% From Baseline

    Time frame Week 48 of current trial

  12. Secondary outcome

    Percentage of Participants with No Body Weight Gain of >5% From Baseline

    Time frame Week 48 of current trial

  13. Secondary outcome

    Percentage of Body Weight Reduction Maintained from the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  14. Secondary outcome

    Percentage of Participants Maintaining ≥ 80% of the Body Weight Reduction Achieved in the Parent Trial

    Time frame Baseline of parent trial to Week 48 of current trial

  15. Secondary outcome

    Change from Baseline in HbA1c

    Time frame Week 48 of current trial

Dates

Start dateJuly 29, 2026 (actual)
Primary completionDecember 26, 2027 (estimated)
CompletionMarch 19, 2028 (estimated)
First postedJuly 6, 2026 (actual)
Last updatedSeptember 3, 2026
Results postedNot stated in the registry record
Status last verifiedSeptember 2026

Actual means the event happened. Estimated means the sponsor expects it. The two mean different things.

Locations

37 sites are recruiting

Japan

FacilityCityState or regionStatus
Shiraiwa Medical ClinicKashiwara-shiOsakaRecruiting
Morizono Medical ClinicKitakyusyu-shiFukuokaRecruiting
Morinaga Ueno ClinicKumamotoKumamotoRecruiting
Mikannohana Clinic, Diabetes, Endocrinology and MetabolismMatsuyamaEhimeRecruiting
Medical Corporation Ouitsukai Kanno NaikaMitaka-shiTokyoRecruiting
Nakamoto Medical ClinicMitoIbarakiRecruiting
Nakakinen ClinicNakaIbarakiRecruiting
Suruga ClinicShizuokaShizuokaRecruiting
Ohishi Naika ClinicTsuchiura-shiIbarakiRecruiting

Puerto Rico

FacilityCityState or regionStatus
Latin Clinical Trial CenterSan JuanRecruiting

United States

FacilityCityState or regionStatus
Elligo Clinical Research CenterAustinTexasRecruiting
Johnson County Clinical Trials Juno BellaireBellaireTexasRecruiting
San Fernando Valley Health InstituteCanoga ParkCaliforniaRecruiting
Core Healthcare GroupCerritosCaliforniaRecruiting
Velocity Clinical Research Chula VistaChula VistaCaliforniaRecruiting
Velocity Clinical Research - CincinnatiCincinnatiOhioRecruiting
Velocity Clinical Research - SpringdaleCincinnatiOhioRecruiting
Osvaldo A Brusco MD PACorpus ChristiTexasRecruiting
Soma Clinical Trials, LLCDenisonTexasRecruiting
Velocity Clinical Research - ProvidenceEast GreenwichRhode IslandRecruiting
Gilbert Center for Family MedicineGilbertArizonaRecruiting
JCCT- Juno Northwest HoustonHoustonTexasRecruiting
Alliance for Multispecialty Research - Kansas CityKansas CityMissouriRecruiting
Palm Research Center IncLas VegasNevadaRecruiting
Manassas Clinical Research Center IncManassasVirginiaRecruiting
Optimus U CorporationMiamiFloridaRecruiting
Indago Research and Health CenterMiami LakesFloridaRecruiting
San Marcus Research Clinic IncMiami LakesFloridaRecruiting
West Clinical ResearchMorehead CityNorth CarolinaRecruiting
Alliance for Multispecialty Research NewtonNewtonKansasRecruiting
Florida Institute for Clinical ResearchOrlandoFloridaRecruiting
Empire Clinical ResearchPomonaCaliforniaRecruiting
Premier ResearchTrentonNew JerseyRecruiting
Iowa Diabetes ResearchWest Des MoinesIowaRecruiting
Encore Medical Research of Weston LLCWestonFloridaRecruiting
Alliance for Multispecialty Research LLCWichitaKansasRecruiting
Conquest Research - Winter ParkWinter ParkFloridaRecruiting

Study documents

No documents are linked in this registry record.

Changes over time

  1. August 27, 2026

    Site added

    13 sites added (37 total)

    2437

  2. August 24, 2026

    Status changed

    Status changed from Not yet recruiting to Recruiting

    NOT_YET_RECRUITINGRECRUITING

  3. August 24, 2026

    Recruitment opened

    Recruitment opened

    NOT_YET_RECRUITINGRECRUITING

  4. August 24, 2026

    Site added

    24 sites added (24 total)

    024

Registry: ClinicalTrials.gov · NCT########

https://xmedica.io/trials/ctgov/NCT07684144