Maternal and Newborn Vitamin D–Binding Protein, Vitamin D Levels, Vitamin D Receptor Genotype, and Childhood Type 1 Diabetes

OBJECTIVE Circumstantial evidence links 25-hydroxy vitamin D [25(OH)D], vitamin D–binding protein (DBP), vitamin D–associated genes, and type 1 diabetes (T1D), but no studies have jointly analyzed these. We aimed to investigate whether DBP levels during pregnancy or at birth were associated with offspring T1D and whether vitamin D pathway genetic variants modified associations between DBP, 25(OH)D, and T1D. RESEARCH DESIGN AND METHODS From a...