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Effect of Liraglutide on Microbiome in Obesity
Could Gut Microbiome Contribute to the Therapeutic Effect of Liraglutide 3.0 mg? A Randomized Double Blind Placebo Controlled Trial
Lead sponsor
Asset
Liraglutide
Subcutaneous · GLP-1 agonist
Listed sites
1
Recruiting sites
1
Enrollment
70
estimated
Study population
Obesity / overweight
Key I/E criterion
•BMI ≥30
Primary endpoint
•Gut microbiome composition
Footprint
Where this trial recruits
Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.
Identifiers
Registered as
Timeline
Milestones
Assets
Investigational agents
Study populations
Who this study enrolls
Eligibility
Who can enroll
Inclusion criteria
1. Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine suitability for the trial;
2. Age ≥ 18 years and < 65 years at the time of signing informed consent;
3. Body mass index (BMI) ≥ 30 kg/m2
4. Stable body weight during the previous 3 months (< 5 kg self-reported weight change).
Exclusion criteria
General Safety
1. Current or history of treatment with medications that may cause significant weight gain for at least 3 months before this trial;
2. Current use or use within three months before this trial of GLP-1 receptor agonist, pramlintide, sibutramine, orlistat, zonisamide, topiramate or phentermine;
3. Type 1 diabetes;
4. Type 2 diabetes;
5. Obesity related to endocrine diseases;
6. Hepatic Failure (AST and/or ALT >3 times upper limit of normal and/or Total Bilirubin >1.7 upper limit of normal)
7. End stage renal disease (eGFR < 30 ml/min/1.73 m2 ) or chronic or intermittent haemodialysis or peritoneal dialysis
8. History or presence of chronic pancreatitis
9. Presence of acute pancreatitis within the past 180 days prior to the day of screening
10. Personal or first degree relative(s) history of multiple endocrine neoplasia type 2 or medullary thyroid carcinoma
11. Presence or history of malignant neoplasms within the past 5 years prior to the day of screening
12. Severe psychiatric disorder which in the investigator's opinion could compromise compliance with the protocol
13. Known or suspected hypersensitivity to trial product(s) or related products
14. Previous participation in this trial. Participation is defined as randomisation
15. Receipt of any investigational medicinal product within 30 days before screening
16. Female who is pregnant, breast-feeding or intends to become pregnant or is of child-bearing potential and not using a highly effective contraceptive method i.e.:
17. Any disorder, unwillingness or inability, which in the investigator's opinion, might jeopardise the subject's safety or compliance with the protocol
18. Previous surgical treatment for obesity (excluding liposuction >1 year before trial entry); 19 ) Inflammatory bowel diseases; 20 ) recent antibiotic therapy ( within 30 days before screening)
Cardiovascular- related
Endpoints (21)
What's being measured
Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.
Coverage by outcome category
Weight & body composition
3 endpointsChange in body weight (kg) assessed by scale
Time frame:Change from baseline in body weight at weeks 5 (visit 7)
Body weight, absolute change (kg)
change from baseline, improvement
Change in body weight (kg) that will be combined with height (m) to report BMI (kg/m^2) where kg is a person's weight in kilograms and m2 is a person's height in metres squared
Time frame:Change from baseline in body mass index at weeks 5 (visit 7)
BMI, change
change from baseline, improvement
Change in body composition assessed by Bioelectrical impedance analysis (BIA)
Time frame:Change from baseline in body composition at weeks 5 (visit 7)
change from baseline, improvement
Glycemic / diabetes
2 endpointsChange in insulin resistance assessed by Matsuda Index
Time frame:Change from baseline in insulin resistance assessed by Matsuda Index at weeks 5 (visit 7)
HOMA-IR (insulin sensitivity)
change from baseline, improvement
Change in insulin resistance assessed by homeostasis model assessment - insulin resistance (HOMA-IR) Index
Time frame:Change from baseline in insulin resistance assessed by HOMA-IR Index at weeks 5 (visit 7)
HOMA-IR (insulin sensitivity)
change from baseline, improvement
Cardiometabolic biomarkers
10 endpointsChange in hormonal regulation of weight assessed by leptin levels
Time frame:Change from baseline in leptin levels at weeks 5 (visit 7)
Leptin, change
change from baseline, improvement
Change in low grade inflammation assessed by C-reactive protein levels
Time frame:Change from baseline in C-reactive protein levels at weeks 5 (visit 7)
hs-CRP, change
change from baseline, improvement
LOINC 30522-7
Change in low grade inflammation assessed by erythrocyte sedimentation rate (ESR) levels
Time frame:Change from baseline in ESR levels at weeks 5 (visit 7)
change from baseline, improvement
Change in low grade inflammation assessed by interleukin- 1 (IL- 1) levels
Time frame:Change from baseline in IL- 1 levels at weeks 5 (visit 7)
change from baseline, improvement
Change in low grade inflammation assessed by interleukin- 6 (IL- 6) levels
Time frame:Change from baseline in IL- 6 levels at weeks 5 (visit 7)
change from baseline, improvement
Change in low grade inflammation assessed by interleukin- 10 (IL- 10) levels
Time frame:Change from baseline in IL- 10 levels at weeks 5 (visit 7)
change from baseline, improvement
Change in lipid profile assessed by total cholesterol levels
Time frame:Change from baseline in total cholesterol levels at weeks 5 (visit 7)
Total cholesterol, change
change from baseline, improvement
LOINC 2093-3
Change in lipid profile assessed by LDL cholesterol levels
Time frame:Change from baseline in LDL cholesterol levels at weeks 5 (visit 7)
LDL-C, change
change from baseline, improvement
LOINC 13457-7
Change in lipid profile assessed by HDL cholesterol levels
Time frame:Change from baseline in HDL cholesterol levels at weeks 5 (visit 7)
HDL-C, change
change from baseline, improvement
LOINC 2085-9
Change in lipid profile assessed by triglycerides levels
Time frame:Change from baseline in triglycerides levels at weeks 5 (visit 7)
Triglycerides, change
change from baseline, improvement
LOINC 2571-8
Other (unclassified)
6 endpointsChange in gut microbiome composition assessed by Firmicutes-to-Bacteroidetes ratio using Quantitative polymerase chain reaction (PCR)
Time frame:Change from baseline in gut microbiome composition at weeks 5 (visit 7)
ratio, descriptive
Change in hormonal regulation of appetite assessed by ghrelin levels
Time frame:Change from baseline in ghrelin levels at weeks 5 (visit 7)
change from baseline, improvement
Change in hormonal regulation of hunger suppression assessed by cholecystokinin levels
Time frame:Change from baseline in cholecystokinin levels at weeks 5 (visit 7)
change from baseline, improvement
Change in hormonal regulation of appetite assessed by polipeptide YY levels
Time frame:Change from baseline in polipeptide YY levels at weeks 5 (visit 7)
change from baseline, improvement
Change in low grade inflammation assessed by Tumor Necrosis Factor -α (TNF-α) levels
Time frame:Change from baseline in TNF-α levels at weeks 5 (visit 7)
change from baseline, improvement
Change in low grade inflammation assessed by monocyte chemotactic protein - 1 (MCP-1) levels
Time frame:Change from baseline in MCP-1 levels at weeks 5 (visit 7)
change from baseline, improvement
Publications (5)
Bibliography
Records linked to this trial through ClinicalTrials.gov references, PubMed NCT search, and curated study seeds. 'Canonical' marks design/result papers; others are registry references or candidates.
Registry references + supporting bibliography
- Diabetes & metabolism2017 Oct (month)PMID28648835doi:10.1016/j.diabet.2017.05.009via CT.gov background
- Postgraduate medical journal2016 May (month)PMID26912499doi:10.1136/postgradmedj-2015-133285via CT.gov background
- Proceedings of the National Academy of Sciences of the United States of America2004 Nov 2PMID15505215doi:10.1073/pnas.0407076101via CT.gov background
Provenance
Sources
Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.