It's reported that CD8+ tissue‐resident memory T cells are significant contributors to inflammation, with a notable accumulation of type 17 CD8+ T cells observed in the joints impacted by psoriatic arthritis.[18] In type 1 diabetic patients, islet‐specific self‐reactive CD8+ T cells within the pancreas are a characteristic phenomenon that distinguishes them from healthy donors.[19]. The gene discussed is CD8A; the disease is psoriatic arthritis.