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On the cover: Immunofluorescence staining showing expression of PD-L1 (green), insulin (red), and the merge of both (orange) on islets in pancreatic tissues of a patient without type 1 diabetes who received immune checkpoint inhibitor therapy. Image courtesy of Satoshi Kawata, Yukari Fujita, Junji Kozawa, and Iichiro Shimomura, Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Suita, Japan. This image is a version of Fig. 3I in the article by Kawata et al. “Inflammatory Cell Infiltration Into Islets Without PD-L1 Expression Is Associated With the Development of Immune Checkpoint Inhibitor–Related Type 1 Diabetes in Genetically Susceptible Patients,” which appears in this issue of Diabetes (p. 511).

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