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Updated: Oct 14, 2025

Adoptive Immunotherapy of iNKT Cells in Glucose-6-Phosphate Isomerase G6PI-Induced RA Mice
Published on: January 31, 2020
Development of type 1 diabetes in a patient treated with anti-interleukin-6 receptor antibody for rheumatoid
Eiji Kawasaki1, Takahiro Fukuyama1, Aira Uchida1
1Department of Diabetes and Endocrinology, Shin-Koga Hospital, Kurume, Japan.
Abstract:
Interleukin-6 is a pleiotropic cytokine that plays a pathogenic role in type 1 diabetes. Therefore, anti-interleukin-6 receptor antibody, tocilizumab, used for the treatment of rheumatoid arthritis, is considered a candidate for immune intervention in type 1 diabetes. Here, we report the case of a 73-year-old woman (HLA-DR9-DQ3 homozygote) with well-controlled rheumatoid arthritis who developed type 1 diabetes while receiving tocilizumab treatment. At 57 years-of-age, the patient was diagnosed with rheumatoid arthritis, for which she underwent tocilizumab therapy that enabled complete suppression of her joint inflammation. A total of 17 months after starting tocilizumab therapy, she noticed polydipsia, polyuria, general fatigue and weight reduction (-2 kg/month), and was diagnosed with type 1 diabetes with diabetic ketoacidosis based on an arterial pH of 7.26, serum ketone body of 7,437 μmol/L, blood glucose level of 925 mg/dL, glycated hemoglobin of 13.2% and the presence of anti-islet autoantibodies. This case report shows valuable insight regarding the effect of anti-interleukin-6 receptor antibody therapy on type 1 diabetes prevention.
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