Genetic Variants Associated with Sensitive Skin: A Genome-Wide Association Study in Korean Women

Area of Science:

• Genetics
• Dermatology
• Bioinformatics

Background:

• Sensitive skin (SS) presents as discomfort (burning, stinging, itching), often worsened by external factors.
• Understanding the genetic underpinnings of SS is crucial for developing targeted management strategies.

Purpose of the Study:

• To conduct a genome-wide association study (GWAS) to identify genetic variants associated with sensitive skin (SS) in a Korean female population.

Main Methods:

• A genome-wide association study (GWAS) was performed on 1690 Korean female participants.
• Participant classification into sensitive and non-sensitive skin groups utilized self-reported questionnaires, patch tests, and sting tests.
• Genetic analysis focused on selected participants (115 sensitive, 181 non-sensitive) to identify single-nucleotide polymorphisms (SNPs) associated with SS.

Main Results:

• No single-nucleotide polymorphisms (SNPs) reached genome-wide significance, but several showed suggestive associations with SS.
• SNP rs11689992 (2q11.3 region) was associated with a 3.67-fold increased risk of SS.
• SNP rs7614738 (USP4 locus) increased SS risk by 2.34 times and acted as an expression quantitative trait locus for GPX1, a gene implicated in oxidative stress and inflammation.

Conclusions:

• Genetic variations in loci related to oxidative stress, cell growth regulation, and neurobiology may influence skin sensitivity.
• These findings provide a foundation for further research into the genetic basis of SS.
• The study supports the potential for personalized approaches to manage sensitive skin based on genetic predispositions.