New weight loss drug shows promise in early trial
NCT ID NCT06124807
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a new drug called Mazdutide to help adults with obesity or overweight lose weight. 179 participants took either the drug or a placebo for about 62 weeks. The main goal was to see how much weight they lost after 32 weeks, with a focus on safety and effectiveness.
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
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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179 people
The number who actually took part.
- Started
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Nov 2023
- Finished
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Jul 2025
- 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
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18 to 75 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: W8M-MC-OXA1: * Are males and females who agree to abide by the reproductive and contraceptive requirements W8M-MC-CWMM: * Have a BMI ≥27 kilograms per square meter (kg/m²) Exclusion Criteria: W8M-MC-OXA1: * Have any prior diagnosis of diabetes mellitus, that is type 2 diabetes mellitus (T2DM), or rare forms of diabetes mellitus, except gestational diabetes. * Have any of the following cardiovascular conditions within 6 months prior to screening: * acute myocardial infarction * cerebrovascular accident (stroke) * unstable angina, or * hospitalization due to congestive heart failure (CHF). * Have a history of New York Heart Association (NYHA) Functional Classification I-IV CHF. * Participants with hypertension who do not have well-controlled blood pressure (BP) (\>140/90 mmHg), regardless of antihypertensive treatment. Participants receiving treatment for hypertension should be on a stable antihypertensive regimen for at least 3 months prior to screening. * Have a history of acute or chronic pancreatitis. Note: If the investigator anticipates a need to add antihypertensive medication during the study, the participant should not be included in the ambulatory blood pressure monitoring (ABPM) procedures. CWMM: * Have a prior or planned surgical treatment for obesity, except prior liposuction or abdominoplasty, if performed \>1 year prior to screening. * Have type 1 diabetes mellitus, latent autoimmune diabetes in adults, or history of ketoacidosis or hyperosmolar coma. * Have poorly controlled hypertension. * Have signs and symptoms of any liver disease other than nonalcoholic fatty liver disease. * Have a history of symptomatic gallbladder disease within the past 2 years. * Have a lifetime history of suicide attempts.
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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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CTI Clinical Research Center
Cincinnati, Ohio, 45212, United States
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Central Washington Health Services Association d/b/a Confluence Health
Wenatchee, Washington, 98801, United States
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Charter Research - Lady Lake
The Villages, Florida, 32162, United States
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Charter Research - Winter Park
Orlando, Florida, 32803, United States
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Cotton O'Neil Diabetes & Endocrinology
Topeka, Kansas, 66606, United States
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Dent Neurologic Institute
Amherst, New York, 14226, United States
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Diablo Clinical Research, Inc.
Walnut Creek, California, 94598, United States
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Great Lakes Clinical Trials - Andersonville
Chicago, Illinois, 60640, United States
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Great Lakes Clinical Trials - Ravenswood
Chicago, Illinois, 60640, United States
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Headlands Research - Scottsdale
Scottsdale, Arizona, 85260, United States
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IMA Clinical Research Austin
Austin, Texas, 78745, United States
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Knownwell
Needham, Massachusetts, 02492, United States
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L-MARC Research Center
Louisville, Kentucky, 40213, United States
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Las Vegas Medical Research
Las Vegas, Nevada, 89128, United States
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Lucas Research, Inc.
New Bern, North Carolina, 28562, United States
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North Suffolk Neurology
Port Jefferson Station, New York, 11776, United States
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Northeast Research Institute (NERI)
Fleming Island, Florida, 32003, United States
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Pacific Diabetes & Endocrine Center
Honolulu, Hawaii, 96817, United States
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Peninsula Research Associates
Rolling Hills Estates, California, 90274, United States
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PlanIt Research, PLLC
Houston, Texas, 77079, United States
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Quality Medical Research
Nashville, Tennessee, 37211, United States
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Spectrum Medical, Inc.
Danville, Virginia, 24541, United States
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StudyMetrix Research
City of Saint Peters, Missouri, 63303, United States
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Suncoast Clinical Research, Inc.
New Port Richey, Florida, 34652, United States
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Tekton Research - Fredericksburg Road
San Antonio, Texas, 78229, United States
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The Institute for Liver Health II dba Arizona Clinical Trials - Mesa
Chandler, Arizona, 85225, United States
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The Institute for Liver Health II dba Arizona Liver Health-Tucson
Tucson, Arizona, 85712, United States
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Velocity Clinical Research, Dallas
Dallas, Texas, 75230, United States
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Velocity Clinical Research, Huntington Park
Huntington Park, California, 90255, United States
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