Key result
Multi-modal anti-obesity medications are associated with ~10% weight loss, outperforming GLP-1 monotherapy and lifestyle interventions.
Why the study?
Pre-operative weight loss may improve metabolic surgery safety for patients with BMI ≥ 70 kg/m², but optimizing these patients is challenging and multi-modal anti-obesity medications may enhance weight loss compared to non-pharmacologic weight loss or GLP-1 monotherapy.
Does multi-modal anti-obesity medication improve mean percent total body weight loss in patients with BMI ≥ 70 kg/m² preparing for metabolic surgery compared to non-pharmacologic medically supervised weight loss or GLP-1 monotherapy?
Cohort (n=113)
No
Does multi-modal anti-obesity medication improve mean percent total body weight loss in patients with BMI ≥ 70 kg/m² preparing for metabolic surgery compared to non-pharmacologic medically supervised weight loss or GLP-1 monotherapy?
Absolute Event Rate: 9.93% vs 5%
p-value: p=0.0047
Multi-modal anti-obesity medications yield superior preoperative weight loss compared to GLP-1 monotherapy or non-pharmacologic weight loss in patients with BMI ≥ 70 kg/m².
May support multi-modal regimens for preoperative weight loss in BMI ≥70; hypothesis-generating pending randomized confirmation.
BACKGROUND/OBJECTIVES: Optimizing patients with a body mass index (BMI) ≥ 70 kg/m² for metabolic surgery (MS) is challenging. However, pre-operative weight loss may be important for improving the safety of MS for these high-risk patients. Multi-modal anti-obesity medications (mmAOM) may enhance preoperative weight loss compared to non-pharmacologic medically supervised weight loss (NP-MSWL) or glucagon-like peptide-1 receptor agonist monotherapy (Mono-GLP-1) alone. SUBJECTS/METHODS: This retrospective study analyzed 113 patients with BMI ≥ 70 kg/m² at a single metabolic disease treatment institute. INTERVENTIONS/METHODS: Patients were categorized into NP-MSWL (n = 13), Mono-GLP-1 (n = 54), and mmAOM (n = 46) groups. The primary outcome was mean percent total body weight loss (%TBWL). Secondary outcomes included %TBWL across time intervals (0-23, 23-51, 51-88, and 88+ weeks). RESULTS: The mmAOM group achieved the highest average - 13.07% - and median (9.93% [5.57-14.29]) %TBWL; followed by Mono-GLP-1 (5.58% [0.98-10.19]); and NP-MSWL (5% [2.97-7.02]). Significant differences among groups were confirmed by Kruskal-Wallis test (p = 0.0047). The highest median %TBWL was at 51-88 weeks (10.25 [6.49-16.45]) (p = 0.0093). CONCLUSIONS: mmAOM treatment yields the highest %TBWL, especially within the first 51 weeks of preoperative preparation, demonstrating superior efficacy over Mono-GLP-1 and NP-MSWL in patients with BMI ≥ 70 kg/m². These findings suggest that incorporating mmAOM in preoperative protocols could optimize weight loss and improve surgical outcomes for high BMI patients.
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Kachmar et al. (2025) conducted a cohort in Obesity (BMI ≥ 70 kg/m²) (n=113). Multi-modal anti-obesity medications (mmAOM) vs. Non-pharmacologic medically supervised weight loss (NP-MSWL) or GLP-1 monotherapy was evaluated on Percent total body weight loss (%TBWL) (p=0.0047). Multi-modal anti-obesity medications achieved a significantly higher median total body weight loss of 9.93% compared to 5.58% with GLP-1 monotherapy and 5.0% with non-pharmacologic weight loss.
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