Role of polymorphism of the androgen receptor gene and non-random X chromosome inactivation in the genesis of androgenic alopecia in women of childbearing potential

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The authors describe the results of a study of polymorphism of the androgen receptor gene by the number of CAG repeats in exon
1 of the androgen receptor gene and non-random X chromosome inactivation in 87 women of childbearing potential (at the average age of 29.5 ± 5.4 years) suffering from androgenic alopecia. They revealed an association between the presence of 'short' (≤ 22) CAG repeats in both alleles of the androgen receptor gene (р < 0,05) and a reliable growth of prevalence of non-random X chromosome inactivation in patients with androgenic alopecia as compared to healthy women (50.7% (39/77) and 16.1% (9/56), respectively, р < 0.05). These data demonstrate a pathogenetic role of polymorphism of the androgen receptor gene and non-random X chromosome inactivation in the development of androgenic alopecia in women of childbearing potential as well as urgency of using molecular and genetic studies to study pathogenetic mechanisms of the disease.


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