AUTHOR=Gao Yue , Zhong Mingyao , Gan Lulu , Xiang Cheng , Li Ling , Yan Yimin TITLE=Immune checkpoint inhibitor– and phosphatidylinositol-3-kinase inhibitor–related diabetes induced by antineoplastic drugs: two case reports and a literature review JOURNAL=Frontiers in Endocrinology VOLUME=Volume 14 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2023.1236946 DOI=10.3389/fendo.2023.1236946 ISSN=1664-2392 ABSTRACT=Immune checkpoint inhibitor (ICI)-and phosphatidylinositol-3-kinase inhibitor (PI3Ki)-related diabetes mellitus are common side effects of anti-tumor drug use that present mainly as hyperglycemia. Here, we present two case reports of diabetes mellitus caused by the use of toripalimab and alpelisib, respectively, in cancer treatment, and a comprehensive, comparative review of the literature on these forms of diabetes. Case 1 presented with diabetic ketoacidosis and was diagnosed with ICIrelated diabetes mellitus and treated with insulin. Case 2 was diagnosed with PI3Kirelated diabetes mellitus, and her blood glucose level returned to normal with the use of metformin and dapagliflozin. We systematically searched the PubMed database for articles on ICI-and PI3Ki-related diabetes mellitus and characterized the differences in clinical features and treatment between these two forms of diabetes.