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Prediction of disease complication occurrence in Crohn's disease using phenotype and genotype parameters at diagnosis

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Background and aims: Complications associated with Crohn's disease (CD) are common and influence treatment decisions and outcomes. Appropriate early treatment may offer a therapeutic advantage to patients. The aim of our study was to indentify predictive factors for occurrence of complications at the time of CD diagnosis. Methods: The study population consisted of 269 CD patients treated during a ten year period. Risk factors compared between complicated and non-complicated disease included phenotypical characteristics, disease classification and the presence of NOD2/CARD15 mutations and single nucleotide polymorphisms in selected autophagy and phagosome genes. Results: Complete data was obtained for 146 patients with an average follow up of 12. years. Sixty five patients (44%) developed a complication during follow up. The only independent risk factors associated with developing a complication were smoking and male gender. There was no association between developing complications and the presence of selected SNPs (P = 0.07 for Tyrosine residue on both alleles in NCF4 SNP rs4821544 and P = 0.06 for a Guanine residue on both alleles in ATG16L SNP rs2241880). Multivariate analysis using a backwards logistic regression model left only male gender as an independent statistically significant association with complicated disease (OR 2.6017, 95% CI: 1.17 to 5.75). The median time to developing a complication was 4. years, and the most common complication was the need for surgical intervention (54%). Conclusions: In the present study, a risk factor for developing CD complication was male gender. Further studies are warranted to assess additional risk factors and how such findings should affect therapy. © 2011 European Crohn's and Colitis Organisation.




Mazor, Y., Maza, I., Kaufman, E., Ben-Horin, S., Karban, A., Chowers, Y., & Eliakim, R. (2011). Prediction of disease complication occurrence in Crohn’s disease using phenotype and genotype parameters at diagnosis. Journal of Crohn’s and Colitis, 5(6), 592–597.

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