title: Comparison of clinical features of HLA-Cw*0602-positive and -negative psoriasis patients in a Han Chinese population.
abstract: HLA-Cw6 is strongly associated with psoriasis and has been suggested to be the PSORS1 gene that confers susceptibility to early-onset psoriasis. In this study of the clinical features of HLA-Cw*0602-positive and -negative psoriasis patients in a Han Chinese population, we typed HLA-C in a cohort of 679 patients and compared the two groups. Cw*0602-positive patients (n=345) had an earlier disease onset (p < 1 x 10(-5)), more severe disease (p < 1 x 10(-3)), higher frequency of guttate psoriasis (p < 1 x 10(-9)), more affected legs and trunk (p < 1 x 10(-5)), higher incidence of Köbner's phenomenon (p=0.005) and of trauma history (p=0.009). Cw*0602-negative patients (n= 334) had more palmoplantar pustulosis (p=0.004), nail changes (p=0.001) and scalp involvement (p=0.007). However, there was no statistically significant difference between the two groups regarding age, gender, incidence of plaque psoriasis, erythrodermic, inverse, psoriatic arthritis, and the precipitation factors stress and infection. The study showed that Cw*0602-positive patients had some obvious clinical differences from Cw*0602-negative patients in a Han Chinese population, which provides evidence for an HLA-Cw*0602-associated phenotype in psoriasis.
authors.affiliation: Institute of Dermatology and Department of Dermatology, No. 1 Hospital, Anhui Medical University, Hefei, Anhui, PR China.
authors.forename: Xing
authors.initials: X
authors.lastname: Fan
authors.forename: Sen
authors.initials: S
authors.lastname: Yang
authors.forename: Liang Dan
authors.initials: LD
authors.lastname: Sun
authors.forename: Yan Hua
authors.initials: YH
authors.lastname: Liang
authors.forename: Min
authors.initials: M
authors.lastname: Gao
authors.forename: Kai Yue
authors.initials: KY
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.forename: XueJun
authors.initials: X
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D015331:Cohort Studies; D005006:Ethnicity / Q000235:genetics; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D015236:HLA-C Antigens / Q000235:genetics*; D006801:Humans; D007223:Infant; D007239:Infections / Q000453:epidemiology; D007868:Leg Dermatoses / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000453:epidemiology; D010641:Phenotype; D011565:Psoriasis / Q000235:genetics*; D012536:Scalp Dermatoses / Q000453:epidemiology; D012720:Severity of Illness Index; D014947:Wounds and Injuries / Q000453:epidemiology
chemical_list: D015236:HLA-C Antigens