New obesity drug tested in 348 people: which injection works best?
NCT ID NCT07226778
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This completed Phase 1 trial tested how the experimental drug maridebart cafraglutide (AMG 133) is absorbed when given as two different injections. 348 adults with overweight or obesity received a single dose. The main goal was to measure drug levels in the blood, not weight loss. Results will guide future studies on this potential obesity treatment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- maridebart cafraglutide (AMG 133)
- What this could lead to
- If successful, this could help determine the best way to give maridebart cafraglutide for weight management, potentially leading to a more effective obesity treatment.
- What could go wrong
- This is an early Phase 1 study focused on drug absorption, not on weight loss or safety. It may not lead to a proven treatment, and side effects or lack of efficacy could emerge in later trials.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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348 people
The number who actually took part.
- Started
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Oct 2025
- Finished
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May 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 60 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria 1. Male or female, of any race, between 18 and 60 years of age, inclusive. a. Females must not be pregnant or lactating. 2. Body mass index between ≥25.0 and \<40.0 kg/m\^2. Exclusion Criteria 1. History or evidence, at screening or check-in, of clinically significant disorder, condition, or disease not otherwise excluded that, in the opinion of the investigator (or designee), would pose a risk to participant safety or interfere with the study evaluation, procedures, or completion. 2. History of or active diabetes (regardless of type, with the exception of a history of gestational diabetes) or hemoglobin A1C ≥6.5% (≥48 mmol/mol). 3. History or evidence of endocrine disorder (eg, Cushing's Syndrome) that can cause obesity. 4. History of acute or chronic pancreatitis within 1 year prior to check-in, or elevation in serum lipase/amylase (\>2 x the upper limit of normal) at screening or a fasting serum triglyceride level of \>500 mg/dL at screening. 5. Malignancy, except nonmelanoma skin cancers or cervical or breast ductal carcinoma in situ, within the last 5 years. 6. Personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia type 2. 7. History or current signs or symptoms of cardiovascular disease (aside from controlled hypertension and controlled dyslipidemia), including but not limited to myocardial infarction, congenital heart disease, valvular heart disease, coronary revascularization, or angina. 8. History or evidence of clinically significant arrhythmia at screening, including any clinically significant findings on the ECG taken at screening or check-in. 9. History of hypersensitivity, intolerance, or allergy to maridebart cafraglutide or related/similar compounds or their ingredients. 10. Estimated glomerular filtration rate ≤60 mL/min/1.73 m\^2, as calculated by the Chronic Kidney Disease Epidemiology Collaboration (CKD EPI) equation at screening or check-in. 11. Use of any over-the-counter or prescription medications within 30 days or 5 half-lives (whichever is longer) before check-in. 12. Current use or prior use of any glucagon-like peptide-1 receptor (GLP-1R) agonist, or glucose-dependent insulinotropic polypeptide receptor (GIPR) agonist or antagonist within the past 3 months prior to check-in. 13. Current or prior use of all herbal medicines (eg, St. John's wort), vitamins, and supplements consumed by the participant within the 30 days prior to enrollment, unless deemed acceptable by the investigator (or designee) and in consultation with the medical monitor, as appropriate. 14. Participant has received a dose of an investigational drug within the past 30 days or 5 half-lives, whichever is longer, prior to check-in. 15. Have previously completed or withdrawn from this study or any other study investigating maridebart cafraglutide or have previously received the investigational product.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Anaheim Clinical Trials
Anaheim, California, 92801-2658, United States
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Fortrea Clinical Research Unit - Dallas
Dallas, Texas, 75247-4989, United States
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Fortrea Clinical Research Unit - Daytona Beach
Daytona Beach, Florida, 32117-5116, United States
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Fortrea Clinical Research Unit Inc. - Madison
Madison, Wisconsin, 53704-2526, United States
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