Efficacy of an Endoluminal-suturing Device (Endomina) on Severe Obstructive Sleep Apnea Syndrome : EndoSAS (EndoSAS)

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    Erasme University Hospital
Updated on 15 October 2022
obstructive sleep apnea


This study aims to evaluate the efficacy of an endoluminal gastric plication using an endoluminal-suturing device to improve severe OSAS in patients with a BMI above or equal to 28 kg/m² until 34.9kg/m².


Obesity is one of the most critical public health burdens worldwide. Its prevalence is increasing, as well as its comorbidities. The main comorbidity of obesity on the respiratory system is the obstructive sleep apnea syndrome (OSAS). The prevalence of OSAS in the obese population is around 45%. OSAS increased cardiovascular risk and decreased quality of life. The most alterable risk factor of OSAS is obesity. Therefore, weight loss is the cornerstone of the treatment. There is some evidence of the efficacy of weight loss surgery (lap band, sleeve gastrectomy, biliary pancreatic deviation, duodenal switch, and Roux-and-Y-gastric bypass) to improve OSAS. Current recommendations suggest bariatric surgery management for patients with a BMI > 35kg/m2 and OSAS. However, most studies have limited scientific value (retrospective observational trials), and the follow-up of patients is limited, mainly due to patients' inadequate compliance. Moreover, until now, there is no reliable predictor for the percentage of reduction of AHI caused by weight loss. On the other hand, there is no approved treatment in patients presenting a BMI between 28 kg/m² to 34.9kg/m² and OSAS.

Endoscopic endoluminal approaches to address obesity have become an important topic of interest over the past decade. Endomina® (Endo Tools Therapeutics, Gosselies, Belgium) is a novel restrictive endoluminal approach. This new procedure permitted a weight loss of 29 % on average sustained at one year. This technique was not yet evaluated in patients with 28 kg/m2 ≤ BMI ≤ 34.9/m2 to improve OSAS.

The current feasibility study aims to evaluate the efficacy of an endoluminal gastric plication using an endoluminal-suturing device to improve severe OSAS in patients with above or equal to 28 kg/m², BMI until 34.9kg/m².

Condition Sleep Apnea Syndromes, Overweight and Obesity
Treatment diet, Endomina- Endoscopic Sleeve Gastroplasty
Clinical Study IdentifierNCT04979234
SponsorErasme University Hospital
Last Modified on15 October 2022


Yes No Not Sure

Inclusion Criteria

Age between 18-65 years
BMI between 28 to 34.9 kg/m²
AHI ≥ 30 events/hour
De novo CPAP user, installed within 2 months prior enrollment
Must be able to comply with all study requirements for the duration of the study, as outlined in the protocol. This includes complying with the visit schedule as well as study-specific procedures such as clinical assessment, endoscopy, radiography, as well as laboratory investigations
Must be able to understand and be willing to provide written informed consent
Had followed the multidisciplinary bariatric workup (blood analyses, dietician, psychologist and doctor appointments)

Exclusion Criteria

Presence of an obesity-hypoventilation syndrome defined as a PaCO2 ≥ 45 mmHg without any other respiratory disease
CPAP treatment failure defined as central sleep apnea occurrence under CPAP treatment or a residual AHI > 5 under optimal CPAP treatment
Incompliance to cPAP treatment defined as an observance to cPAP of at least 4 hours per night in average
Achalasia and any other esophageal motility disorders
Current severe esophagitis (grade C and D based on Los Angeles Classification)
Current Gastro-duodenal ulcer
Heart diseases: unstable angina, myocardial infarction within the past year, or heart disease classified within the New York Heart Association's Class III or IV functional capacity
Hypertension: uncontrolled hypertension during the last 3 months
Diabetes: uncontrolled diabetes (on insulin therapy or oral therapy with Hba1c > 10%)
TBWL >5% over the last 6 months
Current severe renal, hepatic, pulmonary disease or cancer
Current gastrointestinal stenosis or obstruction
Pregnancy, breastfeeding or willing to become pregnant in the coming 18 months
Bariatric surgery, balloon or other endoscopic obesity-related therapy within 6 months of enrollment in this study
Anticoagulant therapy
Impending gastric surgery 60 days post-intervention
Psychiatric disorder refuted after psychological evaluation
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