December 2025 in “Çukurova medical journal (Online)/Çukurova medical journal” In this retrospective review, increased frequencies of certain HLA-DRB1 alleles and low vitamin D3 levels were observed in men with androgenetic alopecia, suggesting an association with immunogenetic factors and potential relevance for screening and treatment decisions.
35 citations
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June 2011 in “British Journal of Dermatology” This study found that in an Italian population, the HLA-DQB1*03 allele was associated with increased susceptibility to alopecia areata, particularly in cases with more than 50% hair loss.
36 citations
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July 2007 in “Journal of Investigative Dermatology” This study observed a strong negative association between the HLA-DQB1*0201 allele and the alopecia totalis/alopecia universalis phenotype in Caucasian individuals, indicating a potential protective role.
18 citations
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January 2013 in “PLoS ONE” This study identified several significant genetic variants associated with alopecia universalis, including a novel association with HLA-DRB5, which may play a hidden role in the disease.
1 citations
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June 2023 in “Genes” 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.