Vitamin D Receptor Gene Polymorphisms Taq-1 and Cdx-1 in Female Pattern Hair Loss

Area of Science:

• Genetics
• Dermatology
• Molecular Biology

Background:

• Female pattern hair loss (FPHL) significantly impacts women's quality of life, characterized by progressive hair follicle miniaturization and reduced hair density.
• The Vitamin D receptor (VDR) plays a role in hair growth and cycle regulation, but its gene polymorphism in FPHL is under-investigated.

Purpose of the Study:

• To investigate the association between VDR gene polymorphisms (Taq-1 and Cdx-1) and FPHL.
• To determine if these polymorphisms influence FPHL occurrence or clinical presentation.

Main Methods:

• A case-control study involving 30 female FPHL patients and 30 age-matched healthy controls.
• VDR gene polymorphisms (Taq-1 and Cdx-1) were analyzed using real-time polymerase chain reaction.
• Hair loss severity was assessed using the Ludwig grading scale.

Main Results:

• Taq-1 polymorphisms (CC, TC genotypes, and T allele) were more prevalent in FPHL patients, increasing disease risk by 2.1 to 12.6 folds.
• Cdx-1 polymorphisms (AA, GA genotypes, and G allele) were significantly more prevalent in FPHL patients, increasing disease risk by 5.2 to 7.5 folds.

Conclusions:

• Taq-1 and Cdx-1 VDR gene polymorphisms are identified as risk factors for FPHL.
• These polymorphisms may contribute to FPHL persistence by potentially impairing new anagen hair growth and hair follicle stem cell proliferation.
• Further research is recommended to validate these findings and elucidate the precise mechanisms involved.