Introduction and Objective: Individuals who carry genetic variants that lower A1C independently of glycemia may have undetected hyperglycemia. Other glycated proteins can be used as alternate glycemic measures but whether these A1C variants affect their levels is unclear.Methods: We recalled 202 patients (10% diabetes) from the Mass General Brigham Biobank enriching recruitment for the African […]
Read MoreMonth: July 2025
371-P: Sex, Age, and Diabetes Type—Dissecting Patterns of Real-World Level 3 Hypoglycemia (iNPHORM, USA)
Introduction and Objective: Large-scale, real-world data on age- and sex-specific Level 3 hypoglycemia rates in type 1 or 2 diabetes (T1D, T2D) remain critically sparse. We aimed to address this gap using prospective data from the iNPHORM study.Methods: Adults (≥18 years) with T1D or T2D on insulin and/or secretagogues recruited from a US-wide probability-based internet […]
Read More1265-P: To What Extent Do Carbohydrate Intake, Physical Activity, and Meal Timing Impact Two-Hour Postprandial Glucose in Pregnancy Hyperglycemia?
Introduction and Objective: Managing carbohydrate intake and physical activity (PA) are recommended for individuals with pregnancy hyperglycemia, but the concurrent impact of these behaviors and meal timing on postprandial glucose levels has not been explored.Methods: Fourteen participants with gestational glucose intolerance (GGI) and 2 with GDM from the Time to Move Randomized Crossover Trial (ClinicalTrials.gov […]
Read More1332-P: The Impact of the African-Ancestry–Specific G6PD Variant on the Relationship between HbA1c and Glucose
Introduction and Objective: Glycated hemoglobin (HbA1c) is the primary clinical measure of average glucose (AG). The X-linked G6PD variant has been associated with lower HbA1c but higher complication risks; yet the extent to which the variant impacts the HbA1c-AG relationship resulting in undetected hyperglycemia is unclear.Methods: In the GRADE Study, 1287 participants with type 2 […]
Read More1810-P: Beta-Cell Extracellular Vesicles—Transfer to and Impact on Neighboring Cells
Introduction and Objective: Extracellular vesicles (EVs) are small membrane-bound particles secreted by cells, playing a crucial role in intercellular communication and cellular homeostasis.Methods: Human EndoC βH1 beta cells were obtained from Human Cell Design. To assess impacts of EV transfer on recipient cells, small EVs from cells treated with or without a cytokine mix were […]
Read More1263-P: Associations of Metal and Element Mixture with Gestational Diabetes Mellitus (GDM) in a Racially and Ethnically Diverse U.S. Birth Cohort—A Bayesian Kernel Machine Regression (BKMR) Analysis
Introduction and Objective: Metals may increase the risk of GDM, while certain elements may be protective. We examined the associations of a mixture of metals and elements during pregnancy with GDM risk in a predominantly Black and Hispanic cohort.Methods: In the Boston Birth Cohort, we measured Pb, Hg, Cd, Se, and Mn in maternal red […]
Read More1186-P: A Short-Term Low Carbohydrate Diet Improves Glycemia in Adolescents and Young Adults with Type 1 Diabetes—Results from a Randomized Crossover Study
Introduction and Objective: Low carbohydrate diets (LCDs) are used by some living with T1D due to perceived glycemic benefits. Yet, few randomized controlled trials have studied LCDs in youth with T1D.Methods: Youth (12-25y) with T1D enrolled in a randomized crossover study to follow a LCD (<15% calories from carbs) and a standard carbohydrate diet (SCD, […]
Read More1805-P: Spasmolytic Polypeptide–Expressing Metaplasia-Like Features of Intraislet Ducts in Zinc-Binding Site–Mutated CRY1-Expressing Diabetic Mice
Introduction and Objective: C414A-CRY1 transgenic mice (TG) develop diabetes due to SASP-like phenotypes in β-cells. We demonstrated that mucinous intra-islet ductal cells (IIDCs) expressing TFF2, that is known as a marker of spasmolytic polypeptide-expressing metaplasia (SPEM) in the stomach, emerge age-dependently in TG. Reportedly, acinar to ductal metaplasia (ADM) occurs through a process similar to […]
Read More1183-P: Neighborhood Level Deprivation Is a Key Predictor of Glycemic Outcomes in Youth-Onset Type 2 Diabetes
Introduction and Objective: Residing in disadvantaged neighborhoods is linked to negative health outcomes. We aimed to assess if neighborhood disadvantage, measured by the area deprivation index (ADI), predicts glycemic outcomes and development of complications in youth-onset type 2 diabetes (T2D).Methods: We extracted data from 2014-2024 from the University of California (UC) Health Data Warehouse which […]
Read More1184-P: Substance Use in Young Adults with Type 1 Diabetes (T1D) in a Pediatric Clinic
Introduction and Objective: Little is known regarding cannabis (THC) and alcohol (EtOH) use in young adults with T1D.Methods: In this cross-sectional study, participants 18-26 years old with T1D in a pediatric clinic were asked study-designed questions to assess THC and EtOH use and knowledge of their glycemic impacts. Respondents were classified by THC and EtOH […]
Read More