Keywords: Alpha-cell pancreatic function; Anti-PD-1; Anti-PD-L1; Autoimmune diabetes; Beta-cell pancreatic function; Coefficient of variation for glucose; Diabetes mellitus; Exocrine pancreatic function; Flash glucose monitoring; FreeStyle Libre; Fulminant diabetes; Glucose variability; Immune checkpoint inhibitors side effects; Immunotherapy; Labile diabetes; Programmed cell death-1; Programmed death ligand 1.