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This case report describes a 21-year-old man with alopecia areata presenting as a U-shaped hair loss pattern resembling Hamilton grade VII male-pattern baldness, with no signs of inflammation or related conditions.

This study concluded that neither basal nor ACTH-stimulated 17-OHP concentrations effectively indicate carrier status for 21-hydroxylase deficiency among Slovenian hyperandrogenic women, recommending molecular analysis of the CYP21 gene for reliable screening.

In this study, researchers found that most patients with frontal fibrosing alopecia lacked the protective rs1800440 polymorphism in the CYP1B1 gene, suggesting its potential role in the development of this condition, while a significant number carried the rs9258883 polymorphism in HLA-B*07:02.

This study identified overexpression of certain immune-related genes and underexpression of genes in specific signaling pathways in premature androgenetic alopecia, suggesting potential new therapeutic targets.

This review discusses gene polymorphisms in COVID-19 patients but reports no new clinical findings.