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1

Correlation of HLA-Cw*06 allele frequency with some clinical features of psoriasis vulgaris in the population of northern Poland

100%
Szczerkowska-Dobosz A., Rebala K., Szczerkowska Z., Witkowska-Tobola A.
Journal of Applied Genetics
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2004
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vol. 45
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issue 4
473-476
EN
Psoriasis is a common skin disease with a genetic background and significant human leukocyte antigen (HLA) associations. HLA-Cw6 is the most frequently described association, particularly with psoriasis of the early onset type. Few studies of its correlation with various psoriasis clinical phenotypes and severity of the disease have been published so far; none in the Polish population. In this study 78 patients with psoriasis vulgaris were evaluated clinically and subdivided according to the age of onset and the type of psoriasis. A system of disease severity evaluation was applied to each patient. All patients and the control group (70 unrelated persons) were typed for HLA-Cw*06. The results show that Cw*06 allele frequency was higher in psoriatics than in the control group. Our investigation confirms that the Cw*06 allele is positively associated with psoriasis vulgaris of the early onset type, with a positive family history and its more severe form.
2

Polymorphism of the TAP1 gene in Polish patients with psoriasis vulgaris

100%
Witkowska-Tobola A. M., Szczerkowska-Dobosz A., Nedoszytko B., Roszkiewicz J.
Journal of Applied Genetics
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2004
|
vol. 45
|
issue 3
391-393
EN
Psoriasis vulgaris is a HLA-associated common and persistent inflammatory skin disease of unknown aetiology. The transporters associated with antigen processing (TAP) genes are polymorphic genes located in the HLA class II region and due to their essential involvement in class I antigen presentation might be additional susceptibility genes to psoriasis. To investigate the possible involvement of the TAP1 gene in the pathogenesis of psoriasis, we analysed its polymorphism in 169 Polish patients with psoriasis vulgaris and compared them with 66 healthy controls. The frequency of TAP1*D was significantly increased in the patients, compared to the control group. The TAP alleles were also analysed with respect to the age of onset of psoriasis in the patients but no significant differences were recorded. In conclusion, our data suggest that the TAP1*D allele could lead to genetic susceptibility to psoriasis vulgaris in Poles.
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