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HLA class I molecules play a role both in viral infection control and in autoimmune diseases development. rs9264942T>C polymorphism in HLA-C gene was found to impact on HLA-C surface expression level and to be associated with HIV-1 control. It was found that these HLA alleles which protect against AIDS are associated with autoimmune disease e.g. psoriasis vulgaris (PsV). Whether rs9264942 SNP is associated with PsV was investigated here. rs9264942T>C was genotyped in 292 PsV patients, and 254 controls using TaqMan Genotyping Assay. PsV patients differed from controls in frequencies of rs9264942T>C alleles (p=3.62 × 10(-16)) and genotypes (5.67 × 10(-15)). However, rs9264942C allele was predisposing to PsV 3-fold weaker than HLA-Cw(∗)06 (OR=5.04 vs. OR=15.61, respectively). In addition, this SNP was described earlier to be in strong linkage disequilibrium (LD) with another SNP, rs67384697 ins/del, which by affecting a microRNA binding is responsible for regulating HLA-C expression. However, typing for is cheaper and simpler than that for rs67384697, therefore we think it may substitute for it to some extent., (Copyright © 2014 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.)

Stigmatization is defined as having a discrediting mark that leads to social discrimination and alienation. The aim of this study was to estimate the level of stigmatization experienced by patients with psoriasis. A total of 102 individuals with psoriasis were recruited and was assessed using the 6-item Stigmatization Scale and the 33-item Feelings of Stigmatization Questionnaire. In addition, quality of life, stress and depression were evaluated. The majority of patients felt that they were stigmatized by psoriasis. The most bothersome aspect was that other people stared at their skin changes. According to the 33-item questionnaire, anticipation of rejection and feelings of guilt and shame were the major aspects of stigmatization, the level of which correlated significantly with pruritus intensity, stress prior to exacerbation, depressive symptoms and quality of life. In order to decrease the stigmatization level in patients with psoriasis, greater effort is needed to raise awareness in contemporary societies that psoriasis is not contagious, but is a disease like many other chronic conditions.