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Open Access Clinical Associations of the Risk Alleles of HLA-Cw6 and CCHCR1*WWCC in Psoriasis

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The PSORS1 locus is the consistently replicated genetic risk factor for psoriasis. Clinical associations with the main marker allele of PSORS1, HLA-Cw6, have been addressed in a number of studies, but clinical associations have not been used as a way to distinguish the effects of the neighbouring candidate genes in PSORS1. Our results show that HLA-Cw6 and CCHCR1 risk allele associations with clinical features of psoriasis are predictably highly similar in a Finnish nationwide cohort of 379 psoriasis patients. The clinical profiling of a small group of patients (n=34) who were HLA-Cw6– but CCHCR1*WWCC positive suggested that no great differences existed between them and HCR–Cw6– patients. HCR+ genotype (as well as Cw6+ genotype) correlated for the first time positively with female sex and, in contrast with previous studies, negatively with disease severity. Presence of psoriatic arthritis was more pronounced in HCR–psoriasis (as well as in Cw6– psoriasis). Clinical profiling may be a useful approach to distinguishing genetic effects of candidate genes even within a locus in sufficiently large cohorts.

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Document Type: Research Article

Publication date: March 1, 2007

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  • Acta Dermato-Venereologica is a bi-monthly international peer-reviewed journal for clinical and experimental research in the field of dermatology and venereology.

    It was founded in 1920 by Johan Almqvist and edited during 1936-1969 by Sven Hellerström. Since 1970, the journal has been published for the Society for the Publication of Acta Dermato-Venereologica on a non-profit basis.

    Acta Dermato-Venereologica publishes high-quality manuscripts in English dealing with new observations on basic dermatological and venereological research, as well as clinical investigations. Each volume also features a number of review articles in special areas, as well as short Letters to the Editor to stimulate debate and to disseminate important clinical observations. Acta Dermato-Venereologica has rapid publication times and is amply illustrated with a large number of colour photographs to enhance understanding.

    Acta Dermato-Venereologica covers inter alia:

    • ~ Atopic dermatitis and contact allergy
    • ~ Facial dermatoses and adnexal disorders
    • ~ New treatments
    • ~ Psoriasis and genodermatoses
    • ~ Psychodermatology
    • ~ Sexually transmitted diseases
    • ~ Skin biology and inflammation
    • ~ Skin cancer and pigmentation
    • ~ Skin immunology and lymphoma
    • ~ Urticaria and itch

    Extensive papers, proceedings from congresses and symposia are printed as supplements to the journal. Announcements concerning pertinent dermatological meetings and books received are also published.
    Readership: Doctors and scientists interested in dermatology, skin biology and venereology.

    Acta Dermato-Venereologica has an impact factor of 3.007.

    Issues between 1998 up to 2005 can be found at

    Since Acta Dermato-Venereologica is an Open Access journal, the contents will no longer be provided via Ingenta Connect after December 31, 2020. To continue accessing the journal free of charge please go to
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