title: Association analysis using refined microsatellite markers localizes a susceptibility locus for psoriasis vulgaris within a 111 kb segment telomeric to the HLA-C gene.
abstract: The HLA-Cw6 antigen has been associated with psoriasis vulgaris despite racial and ethnic differences. However, it remains unclear whether it is the HLA-Cw6 antigen itself or a closely linked, hitherto unidentified, locus that predisposes to the disease. Here, in order to map the susceptibility locus for psoriasis vulgaris precisely within the HLA class I region, 11 polymorphic microsatellite markers distributed throughout a 1060 kb segment surrounding the HLA-C locus were subjected to association analysis in Japanese psoriasis vulgaris patients. Statistical analyses of the distribution and deviation from Hardy-Weinberg equilibrium of the allelic frequency at each micro-satellite locus revealed that the pathogenic gene for psoriasis vulgaris is located within a reduced interval of 111 kb spanning 89-200 kb telomeric of the HLA-C gene. In addition to three known genes, POU5F1, TCF19 and S, this 111 kb fragment contains four new, expressed genes identified in the course of our genomic sequencing of the entire HLA class I region. Therefore, these seven genes are the potential candidates for susceptibility to psoriasis vulgaris.
authors.affiliation: Department of Genetic Information, Tokai University School of Medicine,Bohseidai, Kanagawa, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Oka
authors.forename: G
authors.initials: G
authors.lastname: Tamiya
authors.forename: M
authors.initials: M
authors.lastname: Tomizawa
authors.forename: M
authors.initials: M
authors.lastname: Ota
authors.forename: Y
authors.initials: Y
authors.lastname: Katsuyama
authors.forename: S
authors.initials: S
authors.lastname: Makino
authors.forename: T
authors.initials: T
authors.lastname: Shiina
authors.forename: M
authors.initials: M
authors.lastname: Yoshitome
authors.forename: M
authors.initials: M
authors.lastname: Iizuka
authors.forename: Y
authors.initials: Y
authors.lastname: Sasao
authors.forename: K
authors.initials: K
authors.lastname: Iwashita
authors.forename: Y
authors.initials: Y
authors.lastname: Kawakubo
authors.forename: J
authors.initials: J
authors.lastname: Sugai
authors.forename: A
authors.initials: A
authors.lastname: Ozawa
authors.forename: M
authors.initials: M
authors.lastname: Ohkido
authors.forename: M
authors.initials: M
authors.lastname: Kimura
authors.forename: S
authors.initials: S
authors.lastname: Bahram
authors.forename: H
authors.initials: H
authors.lastname: Inoko
mesh_terms: D000328:Adult; D000483:Alleles; D001483:Base Sequence; D002874:Chromosome Mapping; D017931:DNA Primers; D005260:Female; D005787:Gene Frequency; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease; D015236:HLA-C Antigens / Q000235:genetics*; D006801:Humans; D008297:Male; D018895:Microsatellite Repeats; D008969:Molecular Sequence Data; D011565:Psoriasis / Q000235:genetics*; D016615:Telomere
chemical_list: D017931:DNA Primers; D005819:Genetic Markers; D015236:HLA-C Antigens; C528994:HLA-C*06 antigen