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Background and Aims: OverStitch devices (OverStitch and OverStitch Sx; Apollo Endosurgery, Inc, Austin, Tex, USA) are used for a wide range of applications. A European registry was created to prospectively collect technical and clinical data regarding both systems to provide procedural outcomes and to find correlation between procedural characteristics and outcomes. This study shows the initial results of the first 3 years of the registry., Methods: Patients who underwent endoscopic suturing from January 2018 to January 2021 at 9 centers were enrolled. Data regarding the disease treated,suturing pattern and outcomes were registered. Technical feasibility (success reaching the target area), technical success (success placing sutures), and clinical success (complete resolution of the clinical issue) were recorded and analyzed., Results: During the study period, 137 patients (57.7% men) were enrolled with 100% technical feasibility rate. Endoscopic suturing was successfully performed in 136 cases (16.7% with OverStitch Sx), obtaining a technical success rate of 99.3%. No adverse events were recorded. Overall clinical success was 89%. Mucosal defects were sutured in 32 patients (100% clinical success). Leaks/fistulas were treated in 23 patients (64.7% clinical success). The clinical success of stent fixations (n = 38) was 85%. Perforations (n = 22) were repaired with a clinical success of 94.7%. No significant correlation between location, suture pattern or number, and the success was found, except in case of fistulas where fistulas <1 cm treated by a continuous suture were more likely to achieve clinical success in the follow-up (P < .001)., Conclusions: OverStitch-based suturing is technically feasible regardless of site and method of suturing, with no cases of failure. The overall technical success rate of 99.3% and the clinical outcome success rate of 89% demonstrate that OverStitch technology provides reliable suturing with clinical advantages, especially with fistulas <1 cm., (Copyright © 2022 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.)