Hormonal and Microbiota Modulation After Endoscopic Sleeve Gastroplasty

Starting soon · Not applicable

Conditions studied: Obesity (Disorder), Metabolic Disorders

In brief

Obesity is a chronic disease with a rapidly increasing prevalence, expected to affect up to 25% of the French population by 2030, and is associated with significant morbidity, mortality, and healthcare burden. Bariatric surgery, including sleeve gastrectomy and gastric bypass, remains the standard treatment for severe obesity but is irreversible and carries procedural risks. Less invasive alternatives have emerged, including pharmacological treatments (GLP-1 receptor agonists and multi-agonists) and endoscopic approaches such as endoscopic sleeve gastroplasty (ESG), which have shown efficacy in weight loss and metabolic improvement, although drug therapies are limited by weight regain after discontinuation. Sleeve gastrectomy, the most frequently performed bariatric procedure in France, induces weight loss through gastric restriction and hormonal changes, including decreased ghrelin and increased GLP-1 and PYY, along with accelerated gastric emptying. ESG is a minimally invasive endoscopic technique with mechanisms that remain incompletely understood, likely involving gastric restriction, altered gastric emptying, and hormonal and microbiome-related effects. Bariatric outcomes are driven by complex interactions between gastric anatomy, motility, hormonal regulation, and the gut microbiome. An integrated evaluation of these parameters is needed to better understand response variability after intervention. A total of 40 patients will be enrolled (20 per group).

Key facts

Study ID

NCT07576777

Run by

Assistance Publique - Hôpitaux de Paris

People needed

40

Starts

2026-05-04

Expected to finish

2029-05-04

Last updated by the study team

2026-05-08

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female, age ≥ 18 years
• BMI between 30 and 40 kg/m²
• With or without obesity-related comorbidities (hypertension, diabetes, -obstructive sleep apnea, etc.)
• Indication for ESG (Endoscopic Sleeve Gastroplasty) or surgical sleeve gastrectomy validated in a multidisciplinary team meeting
• Patient with an indication to undergo CT scan and scintigraphy
• Written informed consent
• Affiliation with a health insurance system

You may not qualify if…

• Patient receiving anti-obesity treatment (GLP-1 analogs, multi-agonists)
• History of prior gastric surgery
• History of gastric or distal esophageal cancer
• History of gastric dysplasia
• Presence of a hiatal hernia > 2 cm
• Contraindication to general anesthesia, including:
• Severe coagulation disorders, including uncontrolled congenital or acquired hemostasis disorders, severe thrombocytopenia (platelets < 50 G/L), non-interruptible anticoagulant or antiplatelet therapy according to current guidelines, uncorrected INR > 1.5
• Hemodynamic instability, defined as persistent hypotension or shock, uncontrolled cardiac arrhythmias, or need for vasopressor support
• Decompensated cardiac disease, including uncontrolled heart failure (NYHA III-IV), unstable ischemic heart disease or recent acute coronary syndrome, untreated severe valvular disease, uncontrolled severe hypertension
• Decompensated respiratory disease, including acute or severe chronic respiratory failure not stabilized, uncontrolled severe COPD, untreated severe obstructive sleep apnea, persistent hypoxemia requiring high-flow oxygen therapy
• Any other clinical condition considered incompatible with general anesthesia or endoscopy by the anesthesiologist or investigator, according to current guidelines and patient safety considerations Significant or unstable renal insufficiency, or history of severe reaction to iodinated contrast agents
• Participation in another clinical research study, except for non-interventional studies
• Patient under legal protection (guardianship, curatorship, or judicial protection)
• Physical inability to provide written informed consent
• Rare forms of obesity of genetic and/or central origin (e.g., associated with craniopharyngioma)
• Pregnancy or breastfeeding
• State medical aid (AME)

Where it is running

• Bichat hospital — Paris, Paris, France

Full record on ClinicalTrials.gov

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