- Diabetes, Obesity and Metabolism
- Human Leukocyte Antigens and Biomarkers in Type 1 Diabetes Mellitus Induced by Immune-Checkpoint Inhibitors
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Hidefumi Inaba, Yosuke Kaido, Saya Ito, Tomonao Hirobata, Gen Inoue, Takakazu Sugita, Yuki Yamamoto, Masatoshi Jinnin, Hiroaki Kimura, Tomoko Kobayashi, Shintaro Iwama, Hiroshi Arima, Takaaki Matsuoka
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Endocrinol Metab. 2022;37(1):84-95. Published online February 28, 2022
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DOI: https://doi.org/10.3803/EnM.2021.1282
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Abstract
PDF Supplementary Material PubReader ePub Crossref - TDM
- Background
Type 1 diabetes mellitus induced by immune-checkpoint inhibitors (ICI-T1DM) is a rare critical entity. However, the etiology of ICI-T1DM remains unclear.
Methods In order to elucidate risk factors for ICI-T1DM, we evaluated the clinical course and immunological status of patients with ICI-T1DM who had been diagnosed during 2016 to 2021.
Results Seven of 871 (0.8%, six men and one woman) patients developed ICI-T1DM. We revealed that the allele frequencies of human leukocyte antigen (HLA)-DPA1*02:02 and DPB1*05:01 were significantly higher in the patients with ICI-T1DM In comparison to the controls who received ICI (11/14 vs. 10/26, P=0.022; 11/14 vs. 7/26, P=0.0027, respectively). HLA-DRB1*04:05, which has been found to be a T1DM susceptibility allele in Asians, was also observed as a high-risk allele for ICI-T1DM. The significance of the HLA-DPB1*05:01 and DRB1*04:05 alleles was confirmed by an analysis of four additional patients. The absolute/relative neutrophil count, neutrophils-lymphocyte ratio, and neutrophil-eosinophil ratio increased, and the absolute lymphocyte count and absolute/relative eosinophil count decreased at the onset as compared with 6 weeks before. In two patients, alterations in cytokines and chemokines were found at the onset.
Conclusion Novel high-risk HLA alleles and haplotypes were identified in ICI-T1DM, and peripheral blood factors may be utilized as biomarkers.
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Citations
Citations to this article as recorded by 
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