A Randomized, Double-Blind, Two-Way Cross-over Study to Evaluate the Efficacy of Liraglutide Treatment in Patients Undergoing Transoral Outlet Reduction Endoscopy for Weight Regain Post Roux-en-Y Gastric Bypass

📖 Top 20% JournalJan 30, 2025Obesity surgery

Liraglutide treatment for weight regain after gastric bypass surgery with endoscopic outlet reduction: a controlled crossover study

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Abstract

Group LP, which received liraglutide immediately post-TORe, showed significantly higher %TBWL than group PL at 6, 9, and 12 months.

Immediate administration of liraglutide after TORe is associated with greater weight loss compared to delayed administration.
Group LP exhibited significantly higher %TBWL at multiple time points (6, 9, and 12 months) compared to group PL.
At 21 and 24 months, group LP maintained greater %TBWL than group PL, despite discontinuation of liraglutide.
No significant difference in mean baseline BMI was observed between the two groups.

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BACKGROUND: Transoral outlet reduction endoscopy (TORe) and glucagon-like peptide-1 agonist, liraglutide, have individually shown promise in managing weight regain after Roux-en-Y gastric bypass. However, combined effects of adjunctive liraglutide to TORe remain unexplored. A cross-over design was utilized to evaluate the efficacy of liraglutide treatment when initiated immediately post-TORe or 1 year post-TORe.

METHODS: Data was analyzed from a double-blinded randomized controlled trial conducted at three outpatient clinics in São Paulo, Brazil, from January 2019 to December 2021. Two cohorts were established: group placebo then liraglutide (group PL) received subcutaneous saline dosed daily for 12 months after TORe then liraglutide for the subsequent 12 months, while group liraglutide then placebo (group LP) started subcutaneous liraglutide followed by subcutaneous saline in a similar fashion. Each participant received placebo and liraglutide for equal duration over the 24-month treatment phase. The primary outcomes were percent total body weight loss (%TBWL) at 12 and 24 months.

RESULTS: The study comprised 58 participants in group PL and 51 participants in group LP, with no significant difference in mean baseline BMI between groups. Group LP showed significantly higher %TBWL than group PL at 6, 9, and 12 months. Surprisingly, at 21 and 24 months, group LP continued to exhibit greater %TBWL than group PL, even after discontinuing liraglutide.

CONCLUSION: Immediate post-procedure administration of liraglutide appears to be more effective than placebo in reversing weight regain in patients undergoing TORe. Results indicate that the timing of post-TORe liraglutide initiation may enhance the therapeutic benefits of the procedure.

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