• Nobumasa Ohara, Kazumasa Ohashi, Toshiya Fujisaki, Chiyumi Oda, Yohei Ikeda, Yuichiro Yoneoka, Takehisa Hashimoto, Go Hasegawa, Kazuo Suzuki, and Toshinori Takada.
• Department of Endocrinology and Metabolism, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Japan.
• Intern. Med. 2018 Feb 15; 57 (4): 527535527-535.

AbstractA 63-year-old Japanese woman with advanced lung adenocarcinoma developed isolated adrenocorticotropin deficiency caused by immune checkpoint inhibitor (ICI)-related hypophysitis following 8 months of nivolumab therapy. Prompt corticosteroid replacement therapy effectively relieved her secondary adrenal insufficiency symptoms and allowed her to pursue nivolumab therapy, which had been effective for the control of lung adenocarcinoma. Human leukocyte antigen (HLA) typing revealed the presence of the DRB1*04:05-DQA1*03:03-DQB1*04:01 haplotype, which is associated with susceptibility to autoimmune polyglandular syndrome with pituitary disorder in the Japanese population. This case suggests that genetic factors, such as HLA, contribute to the development of endocrinopathies induced by ICIs.

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