12). On the other hand, IL‐17‐producing γδ (γδ17) T cells can promote pathology upon infiltration and accumulation in target tissues. This has been demonstrated in mouse models of diseases such as arthritis 13, colitis 14, uveitis 15, type 1 diabetes (T1D) 16, psoriasis 17, 18, 19, and multiple sclerosis 20, 21, 22. This evidence concerns the gene IL17A and type 1 diabetes mellitus.