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NCT Number: NCT07441252

A Trial to Evaluate Efficacy and Safety of Maridebart Cafraglutide in Adults Living With Elevated Liver Fat and Obesity or Overweight

The main objective of this trial will be to determine whether maridebart cafraglutide is superior to placebo on reduction in liver fat content and body weight in participants living with obesity or overweight and elevated liver fat content, when administered in conjunction with reduced-calorie diet and increased physical activity.

Recruiting

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Key information

Age range

18 year–99 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Arizona Clinical Trials, Chandler, Arizona, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age ≥ 18 years.
  • Body Mass index (BMI) ≥ 27 kg/m^2 to ≤ 40 kg/m^2 at screening.
  • For participants with type 2 diabetes mellitus (T2DM) at screening:
  • HbA1c ≤ 9.5% (80 mmol/mol) at screening.
  • Treated with diet and exercise alone and/or a stable treatment with metformin, sodium-glucose cotransporter-2 (SGLT-2) inhibitors, or combination.
  • Liver Controlled Attenuation Parameter (CAPTM) ≥ 300 dB/meter via FibroScan® assessment.
  • Liver fat content ≥ 10% by MRI as determined by the central imaging vendor at screening.
  • MRI assessment should only be performed after all other eligibility has been confirmed whenever possible.
  • History of at least 1 self-reported unsuccessful attempt at weight loss by diet and exercise.

Exclusion criteria

  • Recent or planned surgical/device-based obesity treatment (<1 year).
  • History of malignancy within the past 5 years (exceptions apply).
  • Type 1 diabetes or non-type 2 diabetes mellitus (T2DM); unstable/severe hypoglycemia.
  • Advanced diabetic retinopathy or macular edema.
  • History of pancreatitis (acute <180 days or chronic).
  • History of medullary thyroid carcinoma (MTC) or MEN-2
  • Major cardiovascular event within 60 days (e.g., myocardial infarction [MI], stroke, coronary artery bypass graft [CABG]).
  • New York Heart Association (NYHA) Class IV heart failure.
  • Unstable psychiatric disorders within 2 years.
  • Significant liver disease other than metabolic dysfunction-associated steatotic liver disease (MASLD) (e.g., hepatitis, cirrhosis, hepatic decompensation).
  • Estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m^2 or on dialysis.
  • Patient Health Questionnaire-9 (PHQ-9) ≥ 15, or suicidal ideation/behavior (Columbia-Suicide Severity Rating Scale [C-SSRS]).
  • Inability to undergo MRI scan (e.g., due to metal implant, claustrophobia, or body size limitations).

Treatment and study plan

Maridebart cafraglutide

Drug

Maridebart cafraglutide will be administered as a SC injection.

Other names: AMG 133

Placebo

Drug

Placebo will be administered as a SC injection.

Primary outcomes

  1. Percent Change from Baseline in Liver Fat Content by Magnetic Resonance Imaging Proton Density Fat Fraction (MRI-PDFF) at Week 52

    Time frame: Baseline and Week 52

  2. Percent Change from Baseline in Body Weight at Week 52

    Time frame: Baseline and Week 52

Secondary outcomes

  1. Number of Participants Achieving ≥ 30% Reduction from Baseline in Liver Fat Content (LFC) by MRI at Week 52

    Time frame: Baseline and Week 52

  2. Percent Change from Baseline in Visceral Adipose Tissue (VAT) Volume by MRI at Week 52

    Time frame: Baseline and Week 52

  3. Number of Participants Achieving < 5% LFC by MRI at Week 52

    Time frame: Week 52

  4. Change from Baseline in LFC by MRI at Week 52

    Time frame: Baseline and Week 52

  5. Percent Change from Baseline in LFC by MRI at Week 24

    Time frame: Baseline and Week 24

  6. Change from Baseline in LFC by MRI at Week 24

    Time frame: Baseline and Week 24

  7. Percent Change from Baseline in Thigh Muscle Volume by MRI at Week 24 and Week 52

    Time frame: Baseline, Week 24, and 52

  8. Percent Change from Baseline in Thigh Muscle Fat Fraction by MRI at Week 24 and Week 52

    Time frame: Baseline, Week 24, and 52

  9. Percent Change from Baseline in Thigh Intermuscular and Intramuscular Fat Volume by MRI at Week 24 and Week 52

    Time frame: Baseline, Week 24, and 52

  10. Percent Change from Baseline in Abdominal Subcutaneous Adipose Tissue (ASAT) Volume by MRI at Week 52

    Time frame: Baseline and Week 52

  11. Percent Change from Baseline in VAT Volume by MRI at Week 24

    Time frame: Baseline and Week 24

  12. Percent Change from Baseline in ASAT Volume by MRI at Week 24

    Time frame: Baseline and Week 24

  13. Change from Baseline in Waist Circumference at Week 52

    Time frame: Baseline and Week 52

  14. Change from Baseline in Waist-to-height Ratio at Week 52

    Time frame: Baseline and Week 52

  15. Change from Baseline in Aspartate Aminotransferase (AST) at Week 52

    Time frame: Baseline and Week 52

  16. Change from Baseline in Alanine Aminotransferase (ALT) at Week 52

    Time frame: Baseline and Week 52

  17. Change from Baseline in Gamma Glutamyl Transferase (GGT) at Week 52

    Time frame: Baseline and Week 52

  18. Change from Baseline in Hemoglobin A1c (HbA1c) at Week 52

    Time frame: Baseline and Week 52

  19. Change from Baseline in Fasting Glucose at Week 52

    Time frame: Baseline and Week 52

  20. Percent Change from Baseline in Fasting Insulin at Week 52

    Time frame: Baseline and Week 52

  21. Plasma Concentration of Maridebart Cafraglutide at Week 52

    Time frame: Week 52

  22. Number of Participants Experiencing Treatment-emergent adverse events (TEAEs)

    Time frame: From first dose to end of trial (up to approximately 65 weeks)

  23. Number of Participants Experiencing Serious AEs (SAEs)

    Time frame: From screening to end of trial (up to approximately 69 weeks)

Study contacts

Contact information is provided by the study sponsor or research team.

Amgen Call Center

CONTACT

[email protected]

866-572-6436

Sponsors and collaborators

Lead sponsor

Amgen

Industry

Registry information

Official study title

Phase 2b Randomized, Double-blind, Placebo-controlled Trial to Evaluate the Efficacy, Safety and Tolerability of Maridebart Cafraglutide in Adult Participants Living With Elevated Liver Fat and Obesity or Overweight

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Feb 27, 2026
Registry last updated
Jun 18, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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