Journal of Research in Medical Sciences

ORIGINAL ARTICLE
Year
: 2019  |  Volume : 24  |  Issue : 1  |  Page : 104-

The effect of GGC and CAG repeat polymorphisms on the androgen receptor gene in response to finasteride therapy in men with androgenetic alopecia


Mohammadreza Ghassemi, Gholam Hossein Ghaffarpour, Shiva Ghods 
 Department of Dermatology, Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran

Correspondence Address:
Dr. Shiva Ghods
Department of Dermatology, Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran
Iran

Background: It should be assessed whether the polymorphisms on androgen receptor gene can affect therapeutic response to androgenetic alopecia (AGA) medications. We aimed to find a link between polymorphisms on the androgen receptor gene (including the number of triple sequences of cytosine, adenine, and guanine [CAG] and guanine-guanine-cytosine [GGC]) and response to treatment with finasteride in male patients. Materials and Methods: This case–control study was performed on 25 consecutive male patients with hereditary AGA and 25 sex-matched healthy individuals without AGA. The complete sequence of the gene was extracted from the NCBI database. To replicate the samples, real-time polymerase chain reaction technique was used for the pointed gene and the results were confirmed by the sequencing technique. Results: The mean number of CAG sequences in two groups with and without baldness, was 23.16 ± 0.47 and 23.04 ± 0.67. For GGC sequencing with and without baldness, mean count was 22.22 ± 1.45 and 19.92 ± 81.2, respectively, which was significantly higher in the group with baldness. There was no association between number of CAG sequence and improvement in hair loss or the level of patients' satisfaction, but lower number of GGC sequences was associated with higher rate of stopping hair loss, more new hair growth, higher level of satisfaction, and more clinical response to finasteride and clinical improvement in AGA patients. Conclusion: Counting of GGC sequence in the gene encoding the androgen receptor is associated with an increase in odds of baldness and a decrease in the response rate to finasteride in AGA patients.


How to cite this article:
Ghassemi M, Ghaffarpour GH, Ghods S. The effect of GGC and CAG repeat polymorphisms on the androgen receptor gene in response to finasteride therapy in men with androgenetic alopecia.J Res Med Sci 2019;24:104-104


How to cite this URL:
Ghassemi M, Ghaffarpour GH, Ghods S. The effect of GGC and CAG repeat polymorphisms on the androgen receptor gene in response to finasteride therapy in men with androgenetic alopecia. J Res Med Sci [serial online] 2019 [cited 2020 Nov 25 ];24:104-104
Available from: https://www.jmsjournal.net/article.asp?issn=1735-1995;year=2019;volume=24;issue=1;spage=104;epage=104;aulast=Ghassemi;type=0