Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Novel Mutations in IL-10 Promoter Region -377 (C>T), -150 (C>A) and their Association with Psoriasis in the Saudi Population

  • Al-Balbeesi, Amal O. (Department of Dermatology, King Khalid University Hospital, King Saud University) ;
  • Halwani, Mona (Department of Dermatology, King Khalid University Hospital, King Saud University) ;
  • Alanazi, Mohammad (Genome Research Chair, Department of Biochemistry, College of Science, King Saud University) ;
  • Elrobh, Mohammad (Genome Research Chair, Department of Biochemistry, College of Science, King Saud University) ;
  • Shaik, Jilani P. (Genome Research Chair, Department of Biochemistry, College of Science, King Saud University) ;
  • Khan, Akbar Ali (Genome Research Chair, Department of Biochemistry, College of Science, King Saud University) ;
  • Parine, Narasimha Reddy (Genome Research Chair, Department of Biochemistry, College of Science, King Saud University)
  • Published : 2015.03.04
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Abstract

Background: Psoriasis, a common cutaneous disorder characterized by inflammation and abnormal epidermal proliferation with a prevalence of 2-3% in the general population, may be linked to certain types of cancer. Several studies have reported an association between interleukin 10 (IL-10) variant polymorphisms and inflammatory diseases such as psoriasis vulgaris although the results vary according to the population studied. No studies have been performed in the Saudi population. The present study concerned novel variants and other genetic polymorphisms of the promoter and exonic regions of the IL10 gene in patients with moderate to severe psoriasis and potential differences in genotype compared to a group of healthy volunteers. Materials and Methods: Patients with moderate to severe psoriasis and healthy controls with no personal or family history of psoriasis were selected from the central region of Saudi Arabia. Polymorphisms of the IL 10 gene of both groups were genotyped. Results: We observed two novel variants in 5'UTR region of the promoter precursor with higher prevalence of the genotype with both wild-type alleles in patients compared to the healthy control group. The differences at positions -377 and -150 were significantly associated with disease, both the variants conferred strong protection against psoriasis in Saudi patients. Conclusions: This observation provides further support for the importance of the part that IL10 plays in the pathophysiology of this disease. Confirmation of our findings in larger populations of different ethnicities would provide evidence for the role of IL-10 in psoriasis.

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