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Hair Loss Genetics

March 9th, 2011

Q: There was a retrospective study by Lotufo et al. linking male pattern baldness to heart disease. Do you think there are other links like this for androgenetic alopecia? — J.L., San Francisco, CA

A: Family studies revealed both the androgen receptor locus on the X chromosome, as well as a new locus on chromosome 3q26. Association studies performed in two independent groups revealed a locus on chromosome 20 (not near any known genes) as well as the androgen receptor on the X chromosome.

So far, the genetic studies for androgenetic alopecia (AGA) have not revealed identification of a particular gene other than the androgen receptor, as well as the two candidate regions on chromosomes 3 and 20. Inasmuch as the androgen receptor can be involved in other diseases, this might be a feasible connection. Until candidate genes are identified that underlie AGA, it is impossible to predict where the commonalities might lie.

Excerpted from Angela Christiano, Hair Transplant Forum International 2011; 21(1): 14-15.

Read more about Hair Loss Genetics, and see some other Hair Restoration Answers posts on the topic.

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Updated 2013-12-26


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