Revista Espanola de Enfermedades Digestivas (Oct 2010)

NOD2, CD14 and TLR4 mutations do not influence response to adalimumab in patients with Crohn's disease: a preliminary report Las mutaciones de NOD2, CD14 y TLR4 no influyen sobre la respuesta al adalimumab en pacientes con enfermedad de Crohn: informe preliminar

  • M. Barreiro-de Acosta,
  • S. Ouburg,
  • S. A. Morré,
  • J. B. A. Crusius,
  • A. Lorenzo,
  • J. Potel,
  • A. S. Peña,
  • J. E. Domínguez-Muñoz

Journal volume & issue
Vol. 102, no. 10
pp. 591 – 595

Abstract

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Introduction: adalimumab is a recombinant fully-human monoclonal immunoglobulin (IgG1) antibody utilized in the treatment of Crohn's disease. Unfortunately no clinical or genetic markers exist to predict response to anti-tumor necrosis factor-alpha (TNF) therapy. The aim of this study was to evaluate the association between selected genes involved in cytokine regulation and response to adalimumab treatment in Crohn's disease. Methods: twenty-four patients with Crohn's disease either naïve (n = 8) or had lost response or were unable to tolerate the chimeric anti-TNF antibody infliximab (n=16) were enrolled in the study. Patients were genotyped for main polymorphisms in NOD2, CD14 and TLR4 genes. Response to adalimumab treatment was defined as a decrease of Crohn's disease activity index of at least 100 points or a closure of at least 50% of fistulas in case of fistulizing Crohn's disease. Results: overall, 75% of patients did respond to treatment. However, no statistically significant association was found between any of the genotypes and the response to adalimumab. Conclusions: in our small study group no association between the studied polymorphisms and response to adalimumab was apparent. Systematic studies to search for genetic markers of response to anti-TNF therapy are necessary.

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