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This study suggests that the T allele of the SNP rs2476601 in the PTPN22 gene may increase the risk of alopecia areata, although further studies are necessary to validate this finding across different populations.

This meta-analysis found that the rs2476601 SNP of the PTPN22 gene is significantly associated with reduced susceptibility to alopecia areata, with carriers of the C-allele and CC-genotype having a lower risk.

A new genetic mutation in the CAST gene may link PLACK syndrome to alopecia areata.

This study highlights the genetic complexities in alopecia areata, emphasizing the role of microRNAs and their association with other immune-related diseases, which could inform targeted treatment strategies.

This consensus from the Taiwanese Dermatological Association suggests that for mild to moderate alopecia areata, first-line treatments may include topical or intralesional corticosteroids, possibly with topical minoxidil, while severe cases might require systemic corticosteroids or Janus kinase inhibitors.