Functional Interpretation of Genome-Wide Association Study Evidence in Alopecia Areata

    October 2015 in “ Journal of Investigative Dermatology ”
    Lynn Petukhova, Angela M. Christiano
    TLDR Alopecia areata is linked to immune-related genes, suggesting JAK inhibitors as a potential treatment.
    The study on alopecia areata (AA) used genome-wide association studies (GWAS) to identify 14 genomic loci linked to the disease, involving 3,253 cases and 7,543 controls. It found shared genetic associations with other autoimmune diseases, indicating potential for drug repositioning, especially with Janus kinase (JAK) inhibitors. Analyses showed that many implicated genes were involved in immune processes, such as antigen presentation and T-cell activation, highlighting the JAK-STAT signaling and costimulatory pathways. These findings supported ongoing clinical trials with JAK inhibitors and abatacept, and suggested potential for biomarker panels and precision medicine in AA.
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