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β-Cell Glucose Sensitivity to Assess Changes in β-Cell Function in Recent-Onset Stage 3 Type 1 Diabetes.
Stephen E Gitelman1, Carmella Evans-Molina2, Annamaria Guolo3
1Department of Pediatrics and Diabetes Center, University of California, San Francisco, San Francisco, CA.
Diabetes
|June 27, 2023
Summary
Beta-cell glucose sensitivity (βGS) better predicts outcomes in type 1 diabetes (T1D) than traditional tests. Higher baseline βGS indicates slower loss of glycemic control, especially in children and adolescents, aiding clinical trial design.
Area of Science:
- Endocrinology
- Metabolic Diseases
- Immunology
Background:
- Residual C-peptide secretion in type 1 diabetes (T1D) correlates with better glycemic control.
- Current methods like mixed-meal tolerance tests for assessing residual beta-cell function lack strong correlation with clinical outcomes.
Purpose of the Study:
- To evaluate beta-cell glucose sensitivity (βGS) as a novel metric for assessing beta-cell function post-T1D diagnosis.
- To determine if βGS correlates with clinical outcomes and predicts disease progression.
Main Methods:
- Analysis of βGS changes in individuals from the placebo arms of 10 T1D clinical trials at diagnosis.
- Utilizing multivariate Cox models to identify predictors of glycemic control, incorporating βGS.
Main Results:
- βGS demonstrated a faster decline in children compared to adolescents and adults.
- Individuals in the top βGS quartile showed a slower rate of glycemic control loss, with many being children/adolescents.
- Incorporating βGS into Cox models significantly improved the prediction of glycemic control.
Conclusions:
- βGS is a valuable tool for predicting robust clinical remission in T1D.
- βGS can enhance the design of new-onset T1D clinical trials and evaluate therapeutic responses.
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