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Type 2 Diabetes MellitusPhase 1NCT07160257

A Study to Evaluate the Effect of Maridebart Cafraglutide on Insulin Sensitivity and β-cell Function in Participants With Type 2 Diabetes Mellitus

A Phase 1 study testing Maridebart cafraglutide in people with Type 2 Diabetes Mellitus, run by Amgen at 1 site in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The primary objective of this study is to determine the effect of maridebart cafraglutide relative to placebo on insulin sensitivity in participants with Type 2 Diabetes Mellitus (T2DM) treated with stable dose of metformin. Read more about this study

Who is it for?
Ages 18 to 70 years
Conditions the study is for
Type 2 Diabetes Mellitus
What is being tested?
Maridebart cafraglutide
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
56 participants
Where
1 siteUnited States
Study dates
5 Aug 2025to 4 Mar 2027
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Informed consent before initiation of any study-specific activities/procedures.
  • Male or female participants aged ≥ 18 and ≤ 70 years at the time of signing informed consent.
  • Body mass index ≥ 23.0 kg/m^2 (Asian participants only) or ≥ 25 and ≤ 45 kg/m^2 at screening.
  • Diagnosis of T2DM at least 6 months before screening based on the WHO classification.
  • Treatment of T2DM for at least 3 months prior to screening with diet and exercise and a stable dose of metformin (either immediate release or extended release), with or without a stable dose of 1 additional OAM other than metformin.

Who cannot join

  • Type 1 diabetes mellitus, history of ketoacidosis or hyperosmolar state/coma, or any other type of diabetes mellitus (except T2DM or history of gestational diabetes).
  • History of proliferative diabetic retinopathy or diabetic macular edema or nonproliferative diabetic retinopathy that requires acute treatment.
  • One or more episodes of severe hypoglycemia (Level 3 hypoglycemia as defined by the American Diabetes Association classification criteria) within 6 months before screening, as defined by the occurrence of neuroglycopenic symptoms requiring the assistance of another person for recovery.
  • Has modified diet or adopted any nutritional lifestyle modifications within 3 months prior to screening, as assessed by the investigator (or designee) based on participant self-report.
  • History of malignancy within the last 5 years before screening (except nonmelanoma skin cancers, cervical carcinoma in situ, or breast ductal carcinoma in situ).
  • Family (first-degree relative[s]) or personal history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2 (MEN-2).
Show all 27Show fewer
  • History or evidence of endocrine disorder (such as Cushing's syndrome) that can cause obesity.
  • History or evidence of autoimmune disease that can directly or indirectly affect insulin production, insulin action, or glucose metabolism.
  • History of any of the following within 90 days before screening: myocardial infarction, unstable angina, coronary artery bypass graft surgery or other major cardiovascular surgery, percutaneous coronary intervention (diagnostic angiograms are permitted), transient ischemic attack, cerebrovascular accident, or decompensated congestive heart failure, or currently have New York Heart Association Class III or IV heart failure.
  • History of chronic pancreatitis.
  • History of acute pancreatitis within 6 months before screening.
  • Positive human immunodeficiency virus test at screening.
  • Evidence of hepatitis B or C infection.
  • Estimated glomerular filtration rate < 60 mL/min/1.73 m^2 calculated by the 2021 Chronic Kidney Disease Epidemiology Collaboration creatinine-cystatin C equation at screening.
  • Hemoglobin value < 12 g/dL (males) or < 10 g/dL (females) at screening or check-in (Day -4).
  • Use within 90 days before randomization of medications, supplements, or alternative remedies for weight loss (eg, GLP-1RA, GIP agonists, phentermine/topiramate, naltrexone/bupropion, orlistat, and sympathomimetic drugs).
  • Use within 90 days before randomization of chronic (> 14 days) systemic glucocorticoid therapy (excluding topical, intraocular, intranasal, intraarticular, or inhaled preparations).
  • Use within 90 days before randomization of medications that may cause significant weight gain including, but not limited to, atypical antipsychotic and mood stabilizers.
  • Current or prior use of herbal supplements that affect insulin or glucose within 30 days before randomization.
  • Currently receiving treatment in another investigational device or drug study, or less than 30 days (or 5 half-lives, whichever is longer) since ending treatment on another investigational device or drug study(ies).
  • Participants of childbearing potential unwilling to adhere to contraception requirements during treatment and for an additional 16 weeks after the last dose of IMP.
  • Participants who are breastfeeding or who plan to breastfeed while on study through 16 weeks after the last dose of IMP.
  • Participants planning to become pregnant while on study through 16 weeks after the last dose of IMP.
  • Major surgical procedure planned during the study.
  • Participant has known sensitivity to any of the products or components to be administered during dosing.
  • Participant likely to not be available to complete all protocol-required study visits or procedures, and/or to comply with all required study procedures to the best of the participant and investigator's knowledge.
  • History or evidence of any other clinically significant disorder, condition, or disease (except for those outlined above) that, in the opinion of the investigator or medical monitor, if consulted as necessary, would pose a risk to participant's safety or interfere with the study evaluation, procedures, or completion.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • ProSciento, Inc. - Main Clinic

    Chula Vista, California, 91911-1350

Other trials in United States

About this study

Official title: A Phase 1, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Effect of Maridebart Cafraglutide on Insulin Sensitivity and β-cell Function in Participants With Type 2 Diabetes Mellitus

The primary objective of this study is to determine the effect of maridebart cafraglutide relative to placebo on insulin sensitivity in participants with Type 2 Diabetes Mellitus (T2DM) treated with stable dose of metformin.

Being tested
Maridebart cafraglutide, Placebo
Keywords
Type 2 Diabetes Mellitus, T2DM, Maridebart Cafraglutide, AMG 133, Insulin sensitivity, β-cell Function
Medical subject headings
Diabetes Mellitus, Type 2, Insulin Resistance

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Maridebart cafraglutideDrug

    Also called AMG 133

    Maridebart cafraglutide will be administered SC.

  • PlaceboDrug

    Placebo will be administered SC.

Study groups in NCT07160257
Study groupRoleWhat they receive
Maridebart cafraglutideExperimentalParticipants will receive maridebart cafraglutide subcutaneously (SC).
Receives: Drug: Maridebart cafraglutide
PlaceboPlacebo comparatorParticipants will receive placebo SC.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from Baseline in M-value from Hyperinsulinemic-euglycemic Clamp at Week 25

    Measured: Baseline and Week 25

Secondary outcomes (38)
  1. Number of Participants with Treatment-emergent Adverse Events and Serious Adverse Events

    Measured: Up to Week 41

  2. Plasma Concentration of Maridebart Cafraglutide at Week 25

    Measured: Week 25

  3. Number of Participants with Anti-maridebart Cafraglutide Antibody Formation

    Measured: Up to Week 41

  4. Change from Baseline in Total Insulin Secretion at Week 25

    Measured as area under the curve (AUC) of insulin secretion rate (ISR) from hyperglycemic clamp (ISR0-120min).

    Measured: Baseline and Week 25

  5. Change from Baseline in First Phase Incremental ISR from Hyperglycemic Clamp (ISR0-8min) at Week 25

    Measured: Baseline and Week 25

  6. Change from Baseline in Second Phase Insulin Secretion at Week 25

    Measured as AUC of ISR from hyperglycemic clamp (ISR20-120min).

    Measured: Baseline and Week 25

  7. Change from Baseline in Maximum Insulin Secretion at 8 Minutes at Week 25

    Measured as incremental ISR responses to arginine from hyperglycemic clamp at 8 minutes (ISRarg0-8min).

    Measured: Baseline and Week 25

  8. Change from Baseline in Maximum Insulin Secretion at 30 Minutes at Week 25

    Measured as incremental ISR responses to arginine from hyperglycemic clamp at 30 minutes (ISRarg0-30min).

    Measured: Baseline and Week 25

  9. Change from Baseline in ISR at Week 25

    Measured as total AUC (ISR0-240min) from standardized mixed meal tolerance test (sMMTT).

    Measured: Baseline and Week 25

  10. Change from Baseline in Clamp Disposition Index (cDI) at Week 25

    Calculated as product of M-value and ISR0-120min from the hyperglycemic clamp.

    Measured: Baseline and Week 25

  11. Change from Baseline in Post-meal Glucose Concentrations During sMMTT (Total and Incremental AUC0-240min) at Week 25

    Measured: Baseline and Week 25

  12. Change from Baseline in Hemoglobin A1c (HbA1c) at Week 25

    Measured: Baseline and Week 25

  13. Change from Baseline in Fasting Glucose Concentration at Week 25

    Measured: Baseline and Week 25

  14. Change from Baseline in Fasting Glucagon Concentration at Week 25

    Measured: Baseline and Week 25

  15. Change from Baseline in Glucagon Concentration During sMMTT (Total and Incremental AUC0-240min) at Week 25

    Measured: Baseline and Week 25

  16. Change from Baseline in Fasting Triglycerides at Week 25

    Measured: Baseline and Week 25

  17. Change from Baseline in Fasting High-density Lipoprotein-cholesterol (HDL-C) at Week 25

    Measured: Baseline and Week 25

  18. Change from Baseline in Fasting Non-HDL-C at Week 25

    Measured: Baseline and Week 25

  19. Change from Baseline in Triglyceride Concentration During sMMTT (Total and Incremental AUC0-240min) at Week 25

    Measured: Baseline and Week 25

  20. Change from Baseline in Fasting Free Fatty Acids (FFA) Concentration (During Hyperinsulinemic-euglycemic Clamp and sMMTT) at Week 25

    Measured: Baseline and Week 25

  21. Change from Baseline in FFA Concentrations During sMMTT (Total AUC0-240min) at Week 25

    Measured: Baseline and Week 25

  22. Change from Baseline in Percentage Body Fat at Week 25

    Measured: Baseline and Week 25

  23. Change from Baseline in Body Fat Mass at Week 25

    Measured: Baseline and Week 25

  24. Change from Baseline in Lean Body Mass at Week 25

    Measured: Baseline and Week 25

  25. Change from Baseline in Body Weight at Week 25

    Measured: Baseline and Week 25

  26. Change from Baseline in Waist Circumference at Week 25

    Measured: Baseline and Week 25

  27. Change from Baseline in Hunger Fasting Appetite Visual Analog Scale (VAS) Score at Week 25

    Measured: Baseline and Week 25

  28. Change from Baseline in Satiety Fasting Appetite VAS Score at Week 25

    Measured: Baseline and Week 25

  29. Change from Baseline in Fullness Fasting Appetite VAS Score at Week 25

    Measured: Baseline and Week 25

  30. Change from Baseline in Prospective Food Consumption Fasting Appetite VAS Score at Week 25

    Measured: Baseline and Week 25

  31. Change from Baseline in Overall Fasting Appetite VAS Score at Week 25

    Measured: Baseline and Week 25

  32. Change from Baseline in Hunger Appetite VAS Score During sMMTT at Week 25

    Measured: Baseline and Week 25

  33. Change from Baseline in Satiety Appetite VAS Score During sMMTT at Week 25

    Measured: Baseline and Week 25

  34. Change from Baseline in Fullness Appetite VAS Score During sMMTT at Week 25

    Measured: Baseline and Week 25

  35. Change from Baseline in Prospective Food Consumption Appetite VAS Score During sMMTT at Week 25

    Measured: Baseline and Week 25

  36. Change from Baseline in Overall Appetite VAS Score During sMMTT at Week 25

    Measured: Baseline and Week 25

  37. Change from Baseline in Food Craving Inventory (FCI) Score at Week 25

    Measured: Baseline and Week 25

  38. Change from Baseline in Caloric Intake During Ad Libitum Meal at Week 25

    Measured: Baseline and Week 25

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Sep 2025
  2. Study start5 Aug 2025
  3. Primary completion15 Nov 2026 (estimated)
  4. Study completion4 Mar 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
56 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07160257
Sponsor's protocol ID
20250061
Status last verified
Jun 2026
First submitted
29 Aug 2025
Last updated
12 Jun 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: De-identified individual patient data for variables necessary to address the specific research question in an approved data sharing request.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Maridebart cafraglutide in people with Type 2 Diabetes Mellitus, run by Amgen at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 27 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 12 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from Baseline in M-value from Hyperinsulinemic-euglycemic Clamp at Week 25 (time frame: Baseline and Week 25). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Jun 2026.

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