IL1B and type 1 diabetes mellitus: Herein, we applied an ion‐mobility enabled LC‐MS/MS TDP analysis on islets from six human donors, using both control (i.e., non‐treated) and islets exposed to interleukin‐1β (IL‐1β) and interferon‐γ (IFN‐γ) for 24 h as a model of T1D‐onset.