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Roux-en-Y gastric bypass (RYGB) is associated with short- and mid-term type 2 diabetes (T2D) remission. Long-term outcomes and predictive parameters associated with remission following RYGB have not been well elucidated. Determining the overall long-term T2D remission rates following RYGB and identifying predictive variables associated with remission. Multicentered study including patients who underwent RYGB at 3 tertiary referral centers for bariatric surgery. We performed a retrospective cohort study between 2008–2017 to allow a minimum of 5 years of follow-up. We evaluated long-term T2D remission rates and annual T2D clinical and metabolic parameters up to 14 years after surgery. Predictors of remission were assessed using multivariate logistic regression. Patients were divided into 4 groups based on quartiles of total body weight loss percentage (%TBWL) to compare remission rates between groups. A total of 815 patients were included (68.9% female, age 52.1 ± 11.5 yr; body mass index 45.1 ± 7.7 kg/m2) with a follow-up of 7.3 ± 3.8 years. Remission was demonstrated in 51% of patients. Predictors of remission included pre-operative duration of diabetes, baseline HbA1C, insulin use prior to surgery, number of antidiabetic medications and %TBWL (all P <.01). Remission rates were proportionally associated with %TBWL quartile (Q1, 40.9%; Q2, 52.7%; Q3, 53.1%; Q4, 56.1%) (P =.02). Longer duration and higher severity of T2D were negatively associated with remission while higher %TBWL had a positive association. A significant proportion of patients in all quartiles experienced long-term remission after RYGB with a greater likelihood of remission correlated with greater weight loss. • Longer duration and higher severity of T2D are negatively associated with remission • Post-operative weight loss after RYGB is associated with T2DM remission • Regardless of weight loss, patients still experience >40% remission after RYGB • RYGB is considered as a therapeutic option for patients with diabetes and obesity [ABSTRACT FROM AUTHOR]

Background: Roux-En-Y gastric bypass (RYGB) and Sleeve Gastrectomy (SG) have shown to be two of the most effective interventions to enhance weight loss and associated type-2 diabetes mellitus (T2DM) remission. However, a significant number of patients, particularly with BMI ≥ 50 kg/m2, do not achieve T2DM remission after bariatric surgeries. The individualized metabolic surgery (IMS) and Robert et al. scores are two scores that characterize T2DM severity and predict disease remission after bariatric surgeries. We aim to assess the validity of these scores in predicting T2DM remission in our cohort of patients with BMI ≥ 50 kg/m2 with long-term follow-up. Methods: This is a retrospective cohort study of all patients with T2DM, have a BMI ≥ 50 kg/m2, and underwent RYGB or SG in two different US bariatric surgery centers of excellence. The study endpoints included validating the IMS and Robert et al. scores in our cohort and evaluating the presence of any significant differences between RYGB and SG in terms of T2DM remission predicted by each of these scores. Data are presented as mean (standard deviation). Results: A total of 160 patients (66.3% females, mean age 51.0 [11.8] years) had IMS score and 238 patients (66.4% females, age 50.8 [11.4] years) had Robert et al. score data. Both scores predicted T2DM remission in our patients with BMI ≥ 50 kg/m2 with ROC AUC 0.79 for the IMS score and 0.83 for Robert et al. score. Patients with lower IMS scores and higher Robert et al. scores had higher T2DM remission rates. RYGB and SG had similar T2DM remission rates over the long-term follow-up. Conclusion: We demonstrate the ability of the IMS and Robert et al. scores to predict T2DM remission in patients with BMI ≥ 50 kg/m2. T2DM remission was shown to decrease with more severe IMS scores and lower Robert et al. scores. [ABSTRACT FROM AUTHOR]

Introduction : Type 2 diabetes mellitus (T2DM) is a common comorbidity associated with obesity, particularly in patients with body mass index (BMI) ≥ 50 kg/m2. We aim to study real-world T2DM long-term remission in patients with BMI ≥ 50 kg/m2 following Roux-En-Y gastric bypass (RYGB) or sleeve gastrectomy (SG). Methods: This was a retrospective study of the electronic medical records of all patients with BMI ≥ 50 kg/m2, T2DM, and have undergone RYGB or SG at three tertiary referral centers in the United States. We assessed the change in T2DM outcomes after bariatric surgery using a matched paired t-test for continuous variables and Bowker and Pearson test for categorical variables. We performed a multivariate logistic regression to determine predictors of remission. Results: A total of 279 patients with T2DM (65% females, mean age 51.0 ± 11.7 years, 89% white, BMI 56.6 ± 5.9 kg/m2) were analyzed. Long-term T2DM remission (≥ 5 years) was demonstrated in 47% of patients. The duration of T2DM (p < 0.0001), number of T2DM medications (p = 0.003) and weight loss (p = 0.048) were the only independent factors for long-term T2DM remission. Conclusions: In this cohort of patients with BMI ≥ 50 kg/m2, RYGB and SG demonstrated significant and similar long-term T2DM remission rates and weight loss outcomes. [ABSTRACT FROM AUTHOR]