title: IFN-gamma promoter gene polymorphism in psoriasis vulgaris.
abstract: This study was performed to investigate the association between interferon (IFN)-gamma single nucleotide polymorphism (SNP) and susceptibility for psoriasis vulgaris. DNA from 78 patients with psoriasis vulgaris (54 patients with type I psoriasis, 24 with type II psoriasis) and 74 healthy volunteers was investigated. IFN-gamma promoter gene SNP in position 874 was evaluated by polymerase chain reaction with sequence-specific primers (PCR-SSP) and the results were compared between a group of psoriatic patients, divided into early onset of psoriasis (type I) and late onset of psoriasis (type II) subgroups, and healthy control subjects. A significant difference in the genotype frequencies between psoriasis patients and healthy controls was found (p < 0.02) and no significant differences were observed analyzing subsets of psoriatic patients (gender, type of disease) also in carriage and allele frequencies. The results suggest that IFN-gamma polymorphism is associated with susceptibility to psoriasis vulgaris.
authors.affiliation: Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Wroclaw, Poland. wbaran@derm.am.wroc.pl
authors.forename: Wojciech
authors.initials: W
authors.lastname: Baran
authors.forename: Jacek C
authors.initials: JC
authors.lastname: Szepietowski
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Mazur
authors.forename: Eugeniusz
authors.initials: E
authors.lastname: Baran
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D020382:Interleukin-18 / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic / Q000235:genetics; D011565:Psoriasis / Q000235:genetics*
chemical_list: D020382:Interleukin-18