| Abstract;Imagawa et al. defined rapid-onset type 1 diabetes with pancreatic exocrine dysfunction as nonautoimmune fulminant type 1 diabetes mellitus based on clinical and histological studies. We studied 5 patients suspected of nonautoimmune fulminant type 1 diabetes mellitus. They did not have antibodies against glutamic acid decarboxylase, IA-2, thyroid, gastric wall, adrenal cortex, or pituitary. Of the 5 patients, 4 were women, in whom 3, the onset of nonautoimmune fulminant type 1 diabetes mellitus was associated with pregnancy or delivery. Three of the 5 patients had HLA DRB 1*0405, DQB 1*0401, as haplotype susceptible to type 1 diabetes in Japanese. Another patient had both susceptible and protective haplotypes, but the other had none of these. We suggest nonautoimmune fulminant type 1 diabetes mellitus may be related to pregnancy or the HLA DRB 1*0405, DQB 1*0401 haplotype. (author abst.) |