Subphenotype-Dependent Benefits of Bariatric Surgery for Individuals at Risk for Type 2 Diabetes

Area of Science:

• Metabolic Surgery
• Endocrinology
• Obesity Medicine

Background:

• Bariatric surgery is a proven treatment for obesity and type 2 diabetes (T2D).
• The Tübingen Clusters classify individuals based on T2D and comorbidity risk.
• Clusters 5 and 6 are high-risk, while Cluster 4 is low-risk for developing T2D and comorbidities.

Purpose of the Study:

• To investigate if bariatric surgery outcomes differ across Tübingen Clusters.
• To determine if high-risk clusters benefit more from bariatric surgery due to greater metabolic improvement potential.

Main Methods:

• Participants at risk for T2D were assigned to Tübingen Clusters (C4, C5, C6).
• Two bariatric surgery cohorts (discovery and replication) and one control cohort (behavioral counseling) were studied.
• Key outcomes included changes in glucose regulation and prediabetes remission rates.

Main Results:

• Body weight loss was comparable across all clusters after bariatric surgery.
• Cluster 5 demonstrated the most significant improvements in insulin resistance and beta-cell function.
• Prediabetes remission rates were highest in Cluster 5 and lowest in Cluster 4.
• High-risk clusters transitioned to lower-risk profiles post-surgery, unlike the control group.

Conclusions:

• Individuals in Cluster 5 experienced the most substantial benefits from bariatric surgery.
• The Tübingen Cluster classification may help identify patients who will specifically benefit from bariatric surgery.
• Bariatric surgery can effectively improve metabolic parameters and induce prediabetes remission in high-risk individuals.