Can a new drug boost Semaglutide's power against diabetes and obesity?
NCT ID NCT07724340
First seen Jul 24, 2026 · Last updated Sep 02, 2026 · Updated 2 times
Summary
This phase 2 trial tests whether adding an experimental drug called AT673 to the standard diabetes medication semaglutide leads to greater weight loss and better blood sugar control in adults with type 2 diabetes who are overweight or obese. Participants receive either a low or high dose of AT673 or a placebo, all alongside weekly semaglutide injections. The study aims to see if the combination is safe and more effective than semaglutide alone.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- an experimental drug called AT673 given alongside semaglutide
- What this could lead to
- If it works, this combination could offer a more effective option for weight loss and blood sugar management in people with type 2 diabetes.
- What could go wrong
- This is an early phase 2 trial with only 150 participants, so results may not apply broadly. AT673 is experimental, and its safety and added benefit over semaglutide alone are not yet known.
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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About 150 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2026
- Expected to finish
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Mar 2027
An estimate. End dates often move.
- 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 years and older
- 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. Signed informed consent prior to start the Screening Visit procedures. 2. Female and male participants ≥18 years of age at time of consent 3. BMI g ≥27.0 kg/m2 at screening. 4. HbA1c ≥7 and ≤10% (53-86 mmol/mol) at screening. 5. Diagnosis of type 2 diabetes mellitus for ≥ 180 days prior to screening. 6. Either treated with diet and exercise alone or on stable (at least 90 days prior to screening) treatment with metformin, a sodium-glucose cotransporter 2 (SGLT2) inhibitor, sulfonylurea, and/or DPP4 inhibitor as monotherapy or combination therapy, per approved local label. a) Note: Participants treated with sulfonylureas and/or DPP4 inhibitors must discontinue these at least 24 hours prior to initiation of semaglutide. 7. Participant has had at least 1 unsuccessful attempt at weight loss by diet and exercise in the opinion of the investigator. 8. Women of childbearing potential (WOCBP) meeting the criteria below: i) Non-lactating and has a negative pregnancy test at screening and baseline -AND- ii) Uses an acceptable method of contraception as determined by the Investigator or Sub-Investigator for the duration of the study and 30 days following the last dose of study drug 9. Participants must, in the opinion of the Investigator, be suitable candidates to receive semaglutide (Wegovy®) as indicated according to the product label. Exclusion Criteria: 1. Participant has had gastric bypass or other bariatric surgery or endoscopic procedure or any metabolic procedures (e.g. duodenal resurfacing, intragastric balloon, etc.) except for the following: 1. Liposuction and/or abdominoplasty that was performed \> 1 year before screening 2. Laparoscopic gastric band that was removed \> 1 year before screening 3. Intragastric balloon that was removed \> 1 year before screening 4. Duodenal-jejunal bypass sleeve that was removed \> 1 year before screening. 2. Participant has had a self-reported or medically recorded change in body weight \> 5% within 3 months of screening OR has recorded change in body weight \>3% between screening and randomization. 3. Participant is currently using insulin or used insulin within 3 months before screening. 4. Participant is currently using sulfonylureas and/or DPP4 inhibitors and is unable or unwilling to discontinue the use of these medications at least 24 hours prior to initiation of semaglutide. 5. Participant has a form of diabetes other than type 2. a. Note: Previous diagnosis of gestational diabetes is permitted so long as the participant meets all inclusion and none of the exclusion criteria. 6. Participant is currently using or used within 3 months before screening any weight reducing medication including pramlintide, sibutramine, orlistat, zonisamide, topiramate, phentermine, naltrexone, bupropion. 7. Participant is currently using or used within 6 months before screening any medication that contains a GLP-1R agonist component or a GIPR modulator (either by prescription or as part of a clinical study) 8. For participants with a history of prior GLP-1R agonist use (\> 6 months prior to screening): 1. Participant has had a previous intolerance or hypersensitivity to GLP-1 receptor agonists or any of its excipients. 2. Participant has previously discontinued a GLP-1 receptor agonist after continuous treatment for 6 months or longer due to not meeting personal weight loss goals. 9. Participant is taking any medication that, may cause weight gain unless the participant has used these medications for more than 6 months at a stable dose prior to screening. 10. Participant has hepatic liver enzymes aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase levels \>2.5, or total bilirubin levels \> 1.5 times the upper limit of normal (ULN) at screening. 11. Participant's current alcohol intake exceeds 14 units/week for men or 7 units/week for women (1 unit = half pint of beer, 1 glass of wine, 1 measure of spirits). 12. Participant has a recent history of illicit substance use (\< 3 months) or in the opinion of the Investigator suspicion of current illicit substance use. 13. Participant has uncontrolled hypertension at screening (SBP above or equal to 160 mmHg and/or diastolic blood pressure above or equal to 100 mmHg). 14. A corrected QT interval (QTc) of \> 450 msec in males or \> 470 msec in females at screening, or history of long QT syndrome. 15. Concurrent participation in another interventional study (e.g., of a drug, over the counter product, device) or within ≤90 days or 5 half-lives prior to Screening. 16. Participant is unable to understand and communicate with the investigators; or to understand the protocol requirements, instructions, study-related restrictions, nature, scope, and possible consequences of the clinical study; or is unlikely to comply with the study requirements (e.g., uncooperative attitude and improbability of completing the clinical study). 17. Participant is the investigator or any sub-investigator, research assistant, pharmacist, study coordinator, other staff, or relative thereof directly involved in the conduct of the study, or employee of the sponsor, site, or Contract Research Organization (CRO). 18. Participant whose obesity can be traced to a medical cause, suggestive of genetic or syndromic obesity of an endocrinologic disorder (e.g., hypothyroidism, Cushings syndrome, Prader-Willi syndrome). 19. Participant has a history of an active or untreated malignancy or in remission from a clinically significant malignancy for less than 5 years, except for basal cell carcinoma. 20. Participant has a glomerular filtration rate \< 60 mL/min/1.73 m2. 21. Participant has a history of major psychiatric disorders within 5 years or lifetime history of suicide attempt. 22. Participant has any suicidal ideation of type 4 or 5 on the C-SSRS at screening. 23. Participant with a personal or family history of medullary thyroid carcinoma or with multiple endocrine neoplasia (MEN) syndrome type 2. 24. Participant with a previous history of chronic pancreatitis, or acute pancreatitis within 6 months prior to screening. 25. In the opinion of the Investigator, any disorder, condition, inability or unwillingness not covered by the exclusion criteria that may interfere with study procedures, assessments or participant's safety.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
8 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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CenExel Anaheim
RECRUITINGAnaheim, California, 92801, United States
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CenExel Atlanta
RECRUITINGAtlanta, Georgia, 30331, United States
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CenExel Decatur
RECRUITINGDecatur, Georgia, 30030, United States
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CenExel Hollywood
RECRUITINGHollywood, Florida, 33024, United States
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CenExel Phoenix
RECRUITINGChandler, Arizona, 85224, United States
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CenExel SLC
RECRUITINGSalt Lake City, Utah, 84107, United States
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CenExel Savannah
RECRUITINGSavannah, Georgia, 31405, United States
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CenExel Tampa
RECRUITINGTampa, Florida, 33613, United States
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