Association between TLR1 polymorphisms and alopecia areata.
Toll-like receptors (TLRs) may contribute to the process of autoimmune attacks on hair follicles. To investigate whether the TLR1 gene polymorphisms are associated with the development and clinical features of alopecia areata (AA), a case-control comparison of two single nucleotide polymorphisms (SNPs) (rs4833095, Asn248Ser and rs5743557, -414C > T) of TLR1 were studied in 239 AA patients and 248 controls. Using multiple logistic regression model, odds ratios, 95% confidence intervals and corresponding p values were estimated. Clinical features were analyzed based on the age of onset, family history, type of AA, nail involvement and body hair involvement. The missense SNP rs4833095 was significantly associated with the development of AA (codominant2, p = 0.002; recessive, p = 0.001; log-additive, p = 0.0071; and allele frequency, p = 0.0066). The promoter SNP rs5743557 was weakly associated with the development of AA (codominant2, p = 0.019; recessive, p = 0.032; log-additive, p = 0.020; and allele frequency, p = 0.03). In the clinical features, rs4833095 was only weakly associated with age of onset between 15 and 50 years (codominant2, p = 0.043 and recessive, p = 0.022). The results suggest that rs4833095 of TLR1 may be associated with the susceptibility for AA in the Korean population.
Department of Pharmacology and Kohwang Medical Research Institute, College of Medicine, Kyung Hee University , Seoul , Republic of Korea .
Hosik
H
Seok
Dong Woo
DW
Suh
Byungchul
B
Jo
Hwang-Bin
HB
Lee
Hyang Mi
HM
Jang
Hun Kuk
HK
Park
Bark-Lynn
BL
Lew
Joo-Ho
JH
Chung
Woo-Young
WY
Sim
D000506:Alopecia Areata / Q000235:genetics*; D016022:Case-Control Studies; D020022:Genetic Predisposition to Disease; D006801:Humans; D016017:Odds Ratio; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic; D056910:Republic of Korea; D051194:Toll-Like Receptor 1 / Q000235:genetics*
D051194:Toll-Like Receptor 1
Alopecia areata; TLR1; single nucleotide polymorphisms