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AdiposityGLP-1 RANCT06546384

GLP-1 RA on Alcohol Consumption, Metabolism and Liver Parameters in Patients With Obesity and Fatty Liver Disease

A study testing Semaglutide and Weight reduction recommendations (nutritional and exercise) in people with Adiposity and Fatty Liver, run by Insel Gruppe AG, University Hospital Bern at 1 site in Switzerland.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

There is evidence that alcoholic beverage consumption significantly interacts with food energy intake. Furthermore, there is accumulating evidence showing independent, combined, and modifying effects of alcohol and metabolic factors on the onset and progression of chronic liver disease. Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Adiposity, Fatty Liver, Alcohol Use Disorder
What is being tested?
Semaglutide and Weight reduction recommendations (nutritional and exercise)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
64 participants
Where
1 siteSwitzerland
Study dates
1 Nov 2026to 30 Apr 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • BMI ≥ 35 kg/m² OR BMI ≥ 28 kg/m² in the case of weight-related co-morbidities (pre-diabetes or type 2 diabetes mellitus, hypertension, dyslipidemia).
  • Fatty liver disease (steatosis on ultrasound and/or CAP value on FS > 238 dB/m)
  • Age 18 - 80 years
  • Alcohol Use Disorder Identification Test-C Score >4 (AUDIT-C) Score ≥4 for women and ≥5 for men (as measured from AUDIT-questionnaire distributed in visit 1)
  • Sufficient skills for German or French language (written and spoken)
  • Signed informed consent

Who cannot join

  • Active illicit substance use
  • AUDIT-score < 5 (males)/ 4 (females) (as measured from AUDIT-questionnaire distributed in visit 1)
  • Current treatment with drugs against alcohol dependence (disulfiram, acamprosate, naltrexone, baclofen and nalmefene)
  • Any known contraindication to semaglutide
  • Presence or history of a hepatic or extrahepatic malignancy from the previous 6 months

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Susana Gomes Rodrigues, MD contact

+41 31 632 59 54

susana.gomesrodrigues@insel.ch

Switzerland1 site
  • University Hospital Bern

    Bern, 3010

    Susana Gomes Rodrigues, MD, +41 31 632 59 54, susana.gomesrodrigues@insel.ch

Other trials in Switzerland

About this study

Official title: Effect of Glucagon-like Peptide-1 Receptor Agonists (GLP-1 RA) on Alcohol Consumption, Metabolism and Liver Parameters in Patients With Obesity and Fatty Liver Disease

There is evidence that alcoholic beverage consumption significantly interacts with food energy intake. Furthermore, there is accumulating evidence showing independent, combined, and modifying effects of alcohol and metabolic factors on the onset and progression of chronic liver disease. Preclinical and clinical data have showed that GLP-1 RA can decrease alcohol consumption, particularly in obese patients. Moreover there is evidence that semaglutide can improve the liver sinusoidal milieu in pre-clinical models of cirrhosis.

In this study, the investigators aim to assess if patients treated with semaglutide and receiving counselling will achieve a significantly higher alcohol abstinence compared to patients only receiving counselling.

Read the detailed description

In Switzerland, approximately 20% of the population is consuming more alcohol than recommended by the WHO. There is evidence that alcoholic beverage consumption significantly interacts with food energy intake. Although several studies have investigated the role of alcohol in obesity, there is still a lack of knowledge about specific roles of different types of alcoholic beverages and on the effect of consumption patterns in patients with metabolic syndrome and obesity. Nevertheless, there is accumulating evidence showing independent, combined, and modifying effects of alcohol and metabolic factors on the onset and progression of chronic liver disease.

Glucagon-like peptide-1 (GLP-1)-based therapy for type 2 diabetes was introduced in 2006. GLP-1 is an incretin hormone, which is secreted from endocrine L cells of the small intestine in response to nutrients in the gut lumen. Exendin-4 binds to the GLP-1R with high affinity and acts as a receptor agonist, thus referred to as GLP-1 receptor agonists (GLP-1 RA). To date the GLP-1 RA: dulaglutide, semaglutide, liraglutide, lixisenatide and exenatide are approved for the treatment of diabetes mellitus type II in Switzerland. Since 2020, the GLP-1 RA semaglutide is also approved for the treatment of obesity in Switzerland. GLP-1 RA have a well-established effect on the food reward system which is regulated by key mesolimbic brain regions, the ventral tegmental area (VTA) and nucleus accumbens (NAc)11. Interestingly, these regions are also involved in the rewarding effects of drugs of abuse and alcohol. A link between alcohol intake and GLP-1 has been demonstrated in several preclinical studies and may play an important role in the development of addiction. The findings are consistent with the hypothesis that systemic administration of GLP-1 RA can influence the mesolimbic dopamine system and reward-seeking behaviours associated with alcohol use disorder (AUD). Furthermore, preclinical data has shown that GLP-1 RA, namely, liraglutide significantly improved liver microvascular function and exhibited anti-fibrotic effects of confirmed in human liver tissue.

In metabolic fatty liver disease, GLP-1 RA have a significant effect on reducing steatosis and inflammation. Obesity is one of the main risk factors for fatty liver disease, particularly central adiposity, and one of the leading drivers for liver disease progression, independent of the cause of liver disease. In a Swiss referral liver centre, 75% of patients with advanced cirrhosis have either alcohol, metabolic or combined factors (25%) as the cause for liver disease. Therapeutic strategies approaching both aetiologies are thus urgently needed.

The investigators aim to investigate in this study, whether there is a significant beneficial effect of GLP-1 RA, specifically semaglutide, on alcohol consumption, specifically in obese patients. Furthermore, the investigators aim to systematically assess drinking patterns and alcohol beverage consumption in patients with obesity assessed with the innovative direct alcohol biomarker phosphatidylethanol (PEth)24 that overcomes the problems of low reliability of medical history, standard questionnaires and previous tests in assessing recent alcohol consumption.

Being tested
Semaglutide, Weight reduction recommendations (nutritional and exercise)
Keywords
GLP-1, Semaglutide
Medical subject headings
Obesity, Fatty Liver, Alcoholism

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • SemaglutideDrug

    Treatment with semaglutide, following standard clinical practice as per below schedule:

    Week 1-4: Injected dose of 0,25 mg i.d. Week 5-8: Injected dose of 0,5 mg i.d. Week 9-12: Injected dose of 1,0 mg i.d. Week 13-16: Injected dose of 1,7 mg i.d. After week 16: Injected dose of 2,4 mg i.d.

  • Weight reduction recommendations (nutritional and exercise)Behavioural

    Participants will receive nutritional and exercise recommendations and 2 telephone consultations

Study groups in NCT06546384
Study groupRoleWhat they receive
Semaglutide ArmExperimentalPatients assigned to this arm will be treated with semaglutide and standard of care for weight reduction (nutritional and exercise recommendations) for 16 weeks.
Receives: Drug: Semaglutide; Behavioral: Weight reduction recommendations (nutritional and exercise)
Control ArmActive comparatorPatients assigned to this arm will be treated with standard of care for weight reduction (nutritional and exercise recommendations) for 16 weeks.
Receives: Behavioral: Weight reduction recommendations (nutritional and exercise)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Proportion of patients achieving total alcohol abstinence (measured by negative PEth test)

    Percentage of patients achieving total alcohol abstinence from baseline to follow-up after 16 weeks of treatment, measured by negative PEth test, in patients treated with semaglutide vs control.

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

Secondary outcomes (17)
  1. Proportion of patients achieving total alcohol abstinence (measured by TFLB method)

    Percentage of patients achieving total alcohol abstinence from baseline to follow-up after 16 weeks of treatment, measured by TFLB method, in patients treated with semaglutide vs control.

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  2. Proportion of patients maintaining total alcohol abstinence (measured by negative EtG)

    Percentage of patients maintaining total alcohol abstinence from baseline to follow-up after 16 weeks of treatment, measured by negative EtG in patients treated semaglutide vs. control

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  3. Change of alcohol abstinent days (cumulative abstinent days, by TFLB method)

    Assessment of change in percentage of alcohol abstinent days after treatment compared to before treatment with semaglutide vs. control (measured by TFLB method)

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  4. Change of heavy drinking days (by TFLB method)

    Assessment of change in percentage of heavy drinking days after treatment compared to before treatment with semaglutide vs. control (measured by TFLB method)

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  5. Change of total number of drinks per week (by TFLB method)

    Assessment of change in percentage of total number of drinks per week after treatment compared to weeks before treatment with semaglutide vs. control (measured by TFLB method)

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  6. Pre and post treatment comparison of total abstinence (PEth test)

    Change from baseline in number of patients with total alcohol abstinence as assessed by PEth test.

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  7. Pre and post treatment comparison of total abstinence (assessed by TFLB method)

    Change from baseline in number of patients with total alcohol abstinence as assessed by TFLB method.

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  8. Pre and post treatment comparison of total abstinence (measured by negative EtG)

    Change from baseline in number of patients with total alcohol abstinence measured by negative EtG.

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  9. Pre and post treatment comparison of cumulative abstinent days (by TFLB method)

    Change from baseline in number of cumulative abstinent days per patient (measured by TFLB method).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  10. Pre and post treatment comparison of drinking days (by TFLB method)

    Change from baseline in number of drinking days per patient (measured by TFLB method).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  11. Pre and post treatment comparison of number of drinks per week (by TFLB method)

    Change from baseline in number of drinks per week per patient (measured by TFLB method).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  12. Effects of semaglutide on reward and relief drinking behavior

    Assessments of effects of semaglutide on reward and relief drinking behavior (assessed with the Alcohol Expectancy Questionnaire, both study arms).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  13. Percentage reduction in transient liver elastography levels assessed by Fibroscan

    Percentage reduction in transient liver elastography levels by vibration controlled transient elastography (Fibroscan) from baseline until after 16 weeks of therapy (both study arms).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  14. Percentage reduction in transient liver elastography levels assessed by FIB-4 score

    Percentage reduction in transient liver elastography levels by FIB-4 score (fibrosis assessment including age, AST, ALT and platelet count) from baseline until after 16 weeks of therapy (both study arms).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  15. Percentage reduction in metabolic markers

    Percentage reduction in metabolic markers (both study arms): body weight, BMI, fasting glucose, homeostatic model assessment of insulin resistance (HOMA-IR), HbA1c levels from baseline until 16 weeks after therapy

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  16. Safety profile of semaglutide in described population

    Number and description of SAE's concerning semaglutide in described population (semaglutide arm only).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

  17. Effect of GLP-1 RA therapy on TMA/TMAO pathway

    Statistically significant % reduction of TMAO levels (measured by blood test at baseline and after 16 weeks of therapy, semaglutide arm only).

    Measured: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Aug 2024
  2. Study start1 Nov 2026 (estimated)
  3. Primary completion31 Dec 2026 (estimated)
  4. Study completion30 Apr 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is an exploratory, monocentric, randomized controlled clinical trial
Masking
None (open label)
Enrolment
64 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06546384
Sponsor's protocol ID
2023-01715
Other IDs
2023
Acronym
GLP-1 RA
Status last verified
Feb 2026
First submitted
6 Aug 2024
Last updated
19 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing Semaglutide and Weight reduction recommendations (nutritional and exercise) in people with Adiposity and Fatty Liver, run by Insel Gruppe AG, University Hospital Bern at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 19 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Susana Gomes Rodrigues, MD (+41 31 632 59 54, susana.gomesrodrigues@insel.ch), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Proportion of patients achieving total alcohol abstinence (measured by negative PEth test) (time frame: From inclusion date (baseline) until end of the study, total duration 16 weeks per patient). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Aug 2026.

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