Considering TSCMs' capacities to generate all memory and effector T cells, rapid proliferation and effector molecule generation after TCR stimulation, as well as a potential link between the IL‐7/IL‐7 receptor axis and the development of T‐cell responses toward β‐cells, we hypothesized that the increased frequency of TSCMs is associated with T1D progression. Here, IL7 is linked to type 1 diabetes mellitus.