July 2024 in “Journal of Investigative Dermatology” This study found that in mice with alopecia areata, CD8+ T cells showed clonal expansion and specific regulatory networks, which might help identify new therapeutic targets for patients not responding to JAK inhibitors.
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November 2018 in “immuneACCESS” This study found that in alopecia areata, treatment with the oral JAK-inhibitor tofacitinib decreased clonally expanded CD8⁺ T cells in the scalp, but many expanded clones did not completely disappear, potentially leading to relapse after stopping treatment.
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June 2025 in “Cell Reports” In this study using the C3H/HeJ mouse model of alopecia areata, researchers found that hyperexpanded CD8+ T cell clones were sufficient to initiate disease, establishing a causal link between T cell clonality and pathogenicity.
June 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” This study found a specific T cell receptor that may be key in carbamazepine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis, suggesting potential therapeutic targets.
This study identified a high proportion of dual TCR Treg cells in both lymphoid and non-lymphoid tissues of mice, revealing their tissue specificity, TCR repertoire characteristics, and functional phenotypes.