Background: Alcohol use disorder (AUD) is a problematic pattern of alcohol use accompanied by clinically significant medical consequences. Medications can help most people reduce their drinking, but the number is limited, and additional treatment options are needed. Objective: To test if a medication named Semaglutide may reduce alcohol drinking in people with AUD. Who can participate? All Adults aged 18 or older with AUD might be eligible to participate in the study. What will happen during the study? Participants will visit the National Institute on Drug Abuse (NIDA) in Baltimore once a week for about 20 weeks (5 months). Each visit will last between 2 and 6 hours depending on the tasks scheduled for that visit. Participants will be assigned by chance (like flipping a coin) to receive either Semaglutide or placebo. A placebo looks just like a real drug but contains no medicine. The study medication is given as a shot under the skin each week. Participants will undergo different tests throughout the study: They will give blood, urine, and saliva samples. They will engage in self-paced behavioral therapy on a computer. They will answer questions about their mood, diet, alcohol drinking and craving, tobacco use, etc. They will taste several sweet liquids and tell their preferences. They will sit in a bar-like room and be exposed to cues that might make them feel the urge to eat food or drink alcohol. They will wear a virtual reality headset that creates a cafeteria setting. They will walk the virtual cafeteria and choose food and drinks from a buffet. They will have a functional magnetic resonance imaging (fMRI) scan to take pictures of their brain. During the scans, participants will be shown pictures of alcohol-containing drinks, food, and other items.They will perform tasks on a computer screen. Participants will have a follow-up visit about 7 weeks after their last shot.
Study Description: This study will test the safety/tolerability and early efficacy of subcutaneous (s.c.) semaglutide at the dose of 2.4 mg/week or maximum tolerated dose (MTD) as a potential new treatment for alcohol use disorder (AUD). Objectives: We propose to test early efficacy and safety/tolerability of semaglutide, a glucagon-like peptide-1 (GLP-1) analogue, as a novel pharmacotherapy to reduce alcohol use and related measures. This will be a Phase 2a, pilot, proof-of-concept, outpatient study combined with experimental medicine human laboratory procedures. Endpoints: The primary aims will be to determine whether semaglutide reduces alcohol drinking from baseline to endpoint, as measured by total number of standard alcohol-containing drinks consumed per week (drinks per week, DPW). Semaglutide is safe and tolerable in individuals with AUD, as measured by the frequency/severity of adverse events and the proportion of participants who reach maximum dose, and B) semaglutide reduces alcohol drinking from baseline to endpoint, as measured by total number of standard alcohol-containing drinks consumed per week (drinks per week, DPW). The following secondary aims will also be examined: * Whether semaglutide is safe and tolerable, as assessed by the number and severity of adverse events and the proportion of participants who reach the target dose. * Whether semaglutide reduces other self-reported alcohol-related outcomes (e.g., heavy drinking days, drinks per drinking days, World Health Organization (WHO) drinking levels) * Whether semaglutide reduces blood Phosphatidylethanol (PEth) levels as a biomarker of alcohol use * Whether semaglutide reduces alcohol and/or food cue-elicited craving assessed in a bar-like laboratory * Whether semaglutide reduces and/or changes food choices in a virtual reality buffet-like laboratory
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
63
A computer-delivered behavioral therapy derived from the NIAAA s self-help approach, Rethinking Drinking, developed for use in pharmacotherapy trials.
Weekly subcutaneous (s.c.) injections of semaglutide (or placebo) up to 2.4 mg/week or maximum tolerated dose (MTD).
National Institute on Drug Abuse
Baltimore, Maryland, United States
Determine whether semaglutide, compared to placebo, reduces alcohol drinking.
Recording the difference of alcohol consumption between baseline and end of the study is crucial to understand whether drinking amount/patterns change throughout the study, potentially due to the use of semaglutide.
Time frame: Difference in number of standard alcohol-containing drinks consumed / week (Drinks Per Week, DPW) from baseline to end of the study.
Determine whether semaglutide reduces brain activity in resting-state and/or task-based fMRI scans.
Differences in fMRI outcomes will demonstrate whether the drug changes brain activity at rest and/or in response to tasks.
Time frame: Difference in relevant fMRI measures between the two groups.
Determine whether semaglutide reduces and/or changes food choices in a virtual reality buffet-like laboratory.
Differences in food choices selected will demonstrate whether the drug changes food-seeking behaviors in a population with AUD.
Time frame: Difference in food selection in the virtual buffet between the two groups.
Determine whether semaglutide reduces alcohol/food cue-elicited craving assessed in a bar-like laboratory.
Differences in craving scores will demonstrate whether the drug changes cue-reactivity in a population with AUD.
Time frame: Difference in alcohol/food craving scores post exposure between the two groups.
Determine whether semaglutide reduces blood Phosphatidylethanol (PEth) levels as a biomarker of alcohol use.
Recording the difference of blood PEth levels between baseline and end of the study will provide an objective biomarker of change in alcohol use throughout the study, potentially due to the use of semaglutide.
Time frame: Difference in blood PEth levels from baseline to end of the study.
Determine whether semaglutide, compared to placebo, reduces other self-reported alcohol-related outcomes.
Recording the difference of alcohol consumption between baseline and end of the study is crucial to understand whether drinking amount/patterns change throughout the study, potentially due to the use of semaglutide.
Time frame: Difference in other alcohol-related outcomes (e.g., heavy drinking days, drinks per drinking days, WHO drinking levels) from baseline to end of the study.
Determine the safety and tolerability of semaglutide in individuals with AUD.
High numbers of serious adverse events negatively reflect a drug s safety and tolerability in a specific patient population.
Time frame: Number and severity of adverse events; number of people who reach the target dose.
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