RF16 | PSUN203 Deep Characterization of Pancreas Volume of New-Onset Type 1 Diabetes Patients Reveals Puberty-Specific Patterns and New Topographic Correlations with Pancreatic Functions

There is a current understanding of type 1 diabetes (T1D) as being the result of a heterogeneous disease of whole pancreas. So far, descriptions of pancreas alterations suggested a global involvement of inflammation throughout the organ, characterized by abnormal age-specific patterns (i.e. > or 0.05) decrease of PI (0.6±0.2 vs 1.1±0.3 mL/kg, p0.05). PVTAIL positively correlated with CPEPEST and CPEPBASAL at Δ+3 months (R=0.55, p=0.002; R=0.47, p0.05). PVBODY did not correlate with any pancreatic function. Finally, we identified multivariate models that included PV and predicted pancreatic endocrine function at Δ+6 and +12 months (i.e. IDAA1C, HbA1C). MRI performed early after T1D onset helped us define specific pancreas alterations and demonstrate for the first time: (1) the increased pancreas atrophy in prepubertal children; (2) correlations between pancreatic subregion volumes and their respective residual functions early after diagnosis and (3) the improvement of endocrine function prediction models by adding PV estimates as predictors. (1) Wentworth et al. 2019;62(1): 33–40 Presentation: Sunday, June 12, 2022 12:30 p.m. - 2:30 p.m., Sunday, June 12, 2022 1:00 p.m. - 1:05 p.m.