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Association of inflammatory cytokine gene polymorphisms with inflammatory bowel disease in a Moroccan cohort

Genes & Immunity volume 17, pages 60–65 (2016)Cite this article

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Abstract

The purpose of this study was to investigate whether common variants in inflammatory and immune response genes influence inflammatory bowel disease (IBD) risk among Moroccan patients. Using a candidate gene approach, 10 single-nucleotide polymorphisms mapping on six genes (MIF_rs755622, TNFA_rs1800629, IL6_rs2069840, IL6R_rs2228145, IL6ST_rs2228044, IL17A (rs2275913, rs4711998, rs7747909, rs8193036, rs3819024)) were assessed in 510 subjects grouped in 199 IBD and 311 healthy controls. Genotyping was performed with the TaqMan allelic discrimination technology. The results were analyzed using PLINK software. The frequency of allele A for TNFA rs1800629 was significantly higher in ulcerative colitis (UC) patients compared with controls (30.16 vs 16.72%; P=0.0005; odds ratio (OR)=2.15; 95% confidence interval (CI)=1.39–3.32). Statistically significant association to UC was also found under dominant AA+AG vs GG (OR=1.85, 95% CI=1.07–3.21; P=0.02) and recessive models (OR=8.38; 95% CI=2.86–24.53; P=0.0001). In the same way, an association of TNFA rs1800629 variant was observed with IBD under recessive model AA vs AG+GG (OR=4.10; 95% CI=1.56–10.76; P=0.004). No evidence of significant associations was found for the remaining investigated polymorphisms. Our data suggest that TNFA gene promoter polymorphism participates in determining IBD susceptibility in Moroccan patients.

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Acknowledgements

We gratefully acknowledge all the members of LGMP and the Gastroenterology department.

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Authors and Affiliations

  1. Faculty of Medicine and Pharmacy, Laboratory of Genetics and Molecular Pathology, University Hassan II, Casablanca, Morocco

    N Senhaji, N Serbati & S Nadifi

  2. Instituto de Parasitología y Biomedicina López-Neyra, Consejo Superior de Investigaciones Científicas, P.T.S., Granada, Spain

    A Serrano & J Martin

  3. Gastroenterology Department, CHU Ibn Rochd, Casablanca, Morocco

    W Badre

  4. Pathology Department, CHU Ibn Rochd, Casablanca, Morocco

    M Karkouri

  5. Laboratory of Thrombosis and Hemostasis, Montreal Heart Institute, Montreal, Quebec, Canada

    Y Zaid

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  1. N Senhaji
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Correspondence to N Senhaji.

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Senhaji, N., Serrano, A., Badre, W. et al. Association of inflammatory cytokine gene polymorphisms with inflammatory bowel disease in a Moroccan cohort. Genes Immun 17, 60–65 (2016). https://doi.org/10.1038/gene.2015.52

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