TLDR Genetic variation in the androgen receptor gene mainly causes early-onset hair loss, with maternal inheritance playing a key role.
This study from 17 years ago found that genetic variation in the androgen receptor (AR) gene is the main factor in the development of common early-onset androgenetic alopecia (AGA). The study analyzed a large number of genetic variants covering the AR locus and suggests that a polyglycine-encoding GGN repeat in exon 1 is a plausible candidate for conferring the functional effect. The X-chromosomal location of AR stresses the importance of the maternal line in the inheritance of AGA.
191 citations
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December 2003 in “Journal of Investigative Dermatology”
15 citations
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14 citations
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July 2001 in “American Journal of Human Genetics” Haplogroup X found in Altaian population supports Amerindian origin.
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March 2001 in “Journal of Investigative Dermatology”
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54 citations
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203 citations
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November 1984 in “Journal of the American Academy of Dermatology” Common baldness is likely inherited through multiple genes, not just one.
195 citations
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June 2005 in “American Journal of Human Genetics” Genetic variation in the androgen receptor gene mainly causes early-onset hair loss, with maternal inheritance playing a key role.
78 citations
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August 1996 in “The Journal of Clinical Endocrinology & Metabolism” The same gene mutation can cause different symptoms in family members.