New weekly shot shows promise for major weight loss
NCT ID NCT06525935
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested a new drug called enicepatide (CT-388) given as a weekly injection for 48 weeks. It involved 469 adults with obesity or overweight who also had at least one weight-related health problem like high blood pressure or prediabetes. The goal was to see how much weight people lost and whether the drug was safe and tolerable.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Enicepatide (also called CT-388), a once-weekly injectable drug
- What this could lead to
- If successful, this could lead to a new weekly injection for significant weight loss in people with obesity or overweight and related health issues.
- What could go wrong
- This is a Phase 2 dose-finding study, so results are still early. The drug may cause side effects or fail to show enough benefit over placebo.
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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469 people
The number who actually took part.
- Started
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Aug 2024
- Finished
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Dec 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: * Male or female, 18 to 75 years of age * Body mass index (BMI) ≥30.0 kg/m2, OR BMI ≥27.0 and \<30.0 kg/m2 and previously diagnosed with at least 1 of the following weight-related comorbidities, such as: prediabetes, hypertension, dyslipidemia, obstructive sleep apnea, or cardiovascular disease * At least one self-reported unsuccessful effort to lose body weight Exclusion Criteria: * Prior history/diagnosis/lab evidence of any type of diabetes mellitus (e.g., Type 1, Type 2, gestational), or a history of ketoacidosis or hyperosmolar state * Self-reported body weight change of \>5 kg within 3 months before randomization * Any unbalanced/extreme diets within 3 months of the screening visit, or plan to be on such diets during the study * Current or recent participation in an organized weight reduction program * Current or recent use of any treatment that promotes weight loss or glucose metabolism * Current or recent use of treatment that may cause weight gain * Prior or planned surgical treatment for obesity * Clinically significant or active gastric emptying abnormality, malabsorption, or chronic use of medications that directly affect GI motility * History of chronic pancreatitis or acute pancreatitis within 6 months before screening * Have obesity induced by other endocrinologic disorders (e.g., Cushing syndrome) or diagnosed monogenetic or syndromic forms of obesity * History of major depressive disorder within 2 years of screening, or any history/diagnosis of other severe psychiatric conditions (Note: Prospective participants with depression or anxiety whose disease state, in the opinion of the Investigator, is considered stable and expected to remain stable throughout the course of the study, may be considered for inclusion) * Family or personal history of medullary thyroid carcinoma * Serum calcitonin ≥ 20 ng/L * Women who are pregnant, breastfeeding, or intend to become pregnant, or are of childbearing potential and not using a highly effective contraceptive method
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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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Alabama Clinical Therapeutics, LLC
Birmingham, Alabama, 35235, United States
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Alliance for Multispecialty Research, LLC
Knoxville, Tennessee, 37920, United States
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Amicis Research Center
Northridge, California, 91324, United States
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Amicis Research Center - Anaheim
Anaheim, California, 92801, United States
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Amicis Research Center - West Hills
West Hills, California, 91307, United States
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Apex Mobile Clinical Research
Bellaire, Texas, 77401, United States
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Ark Clinical Research - Long Beach
Long Beach, California, 90806, United States
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Ark Clinical-Fountain Valley
Fountain Valley, California, 92708, United States
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Central Alabama Research
Homewood, Alabama, 35209, United States
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Chrysalis Clinical Research
St. George, Utah, 84790, United States
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Clinical Research Associates, Inc.
Nashville, Tennessee, 37203, United States
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Elevate Clinical
Seabrook, Texas, 77586, United States
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FutureSearch Trials of Dallas, LLC
Dallas, Texas, 75231, United States
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Impact Research Institute
Waco, Texas, 76710, United States
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Infinity Clinical Research
Norco, California, 92860, United States
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Louisville Metabolic and Atherosclerosis Research Center (L-MARC)
Louisville, Kentucky, 40213, United States
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Lucas Research, Inc
Morehead City, North Carolina, 28557, United States
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Mercury Street Medical Group
Butte, Montana, 59701, United States
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National Clinical Research - Richmond, Inc
Richmond, Virginia, 23294, United States
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Neurobehavioral Research, Inc. (NBR)
Cedarhurst, New York, 11516, United States
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Orange County Research Center
Tustin, California, 92780, United States
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Pinnacle Clinical Research
San Antonio, Texas, 78229, United States
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Progressive Medical Research
Port Orange, Florida, 32127, United States
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Prospective Research Innovations Inc.
Rancho Cucamonga, California, 91730, United States
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Tampa Bay Medical Research, Inc.
Clearwater, Florida, 33761, United States
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Texas Diabetes & Endocrinology, P.A.
Austin, Texas, 78731, United States
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The Center for Pharmaceutical Research
Kansas City, Missouri, 64114, United States
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The Institute for Liver Health II LLC dba Arizona Clinical Trials; Arizona Liver Health
Mesa, Arizona, 85210, United States
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Tribe Clinical Research
Greenville, South Carolina, 29607, United States
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University of Texas Southwestern
Dallas, Texas, 75390, United States
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Velocity Clinical Research - Cincinnati
Cincinnati, Ohio, 45242, United States
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Velocity Clinical Research - Dallas
Dallas, Texas, 75230, United States
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Velocity Clinical Research - Los Angeles
Los Angeles, California, 90057, United States
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Velocity Clinical Research, Providence
East Greenwich, Rhode Island, 02818, United States
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