Vitamin D Receptor Gene Polymorphism In Chronic Telogen Effluvium; A Case-Control Study

Area of Science:

• Genetics
• Dermatology
• Molecular Biology

Background:

• Telogen effluvium (TE) is a common cause of diffuse hair shedding.
• The Vitamin D receptor (VDR) is crucial for hair cycle regulation, with expression in key follicular cells.

Purpose of the Study:

• To examine the association between VDR gene polymorphisms (Cdx1 and Taq1) and the development of chronic TE.
• To determine if specific VDR genotypes or alleles correlate with an increased risk of chronic TE.

Main Methods:

• A case-control study involving 30 female patients with chronic TE and 30 healthy controls.
• Real-time polymerase chain reaction (PCR) was used to detect Taq1 and Cdx1 VDR gene polymorphisms.

Main Results:

• The Taq1 CC genotype and C allele were significantly associated with chronic TE, increasing risk by 14.7-fold and 3.1-fold, respectively.
• The Cdx1 GA genotype and A allele were also significantly linked to chronic TE, elevating risk by 6.3-fold and 3.8-fold, respectively.
• These findings indicate a strong genetic predisposition to chronic TE associated with specific VDR polymorphisms.

Conclusions:

• Specific Taq1 and Cdx1 VDR gene polymorphisms are significantly associated with an increased risk of chronic telogen effluvium.
• These polymorphisms may contribute to the persistence of TE by hindering hair follicle regeneration and stem cell proliferation.
• Further research is recommended to investigate other types of TE and larger patient cohorts.