Abstract
BackgroundMale androgenetic alopecia (AGA) has been implicated as a putative risk factor in severe COVID‐19 based on high incidences of advanced AGA in male hospitalized COVID‐19 patients. Research further suggests that androgen signalling, which plays a central role in AGA aetiology, promotes SARS‐CoV‐2 infection and is associated with severe COVID‐19 symptoms in men.ObjectivesWe aimed to systematically investigate a potential association between AGA and COVID‐19 both on an epidemiological and a genetic level in a large single‐population cohort.MethodsWe performed regression, genetic correlation and polygenic risk score (PRS) analyses using data from the UK Biobank and published GWAS data on AGA and COVID‐19.ResultsOur analyses did not reveal any significant epidemiological or genome‐wide genetic association between AGA and severe COVID‐19. Pathway‐based PRS analyses however revealed a significant association in specific pathways, namely vitamin metabolism, natural killer cell‐mediated cytotoxicity, WNT signalling and aryl hydrocarbon receptor signalling.LimitationsWe restricted our analyses to the white British population and used self‐reported AGA status. Sample size may be a limitation in our regression and PRS analyses.ConclusionsOur data yield no evidence for an epidemiological association between AGA and COVID‐19 but suggest that a shared genetic basis for both traits exists in specific pathways.
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