TITLE

Anti-Saccharomyces cerevisiae antibody (ASCA) positivity is associated with increased risk for early surgery in Crohn's disease

AUTHOR(S)
Forcione, D. G.; Rosen, M. J.; Kisiel, J. B.; Sands, B. E.
PUB. DATE
August 2004
SOURCE
Gut;Aug2004, Vol. 53 Issue 8, p1117
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Anti-Saccharomyces cerevisiae antibodies (ASCA) are a specific but only moderately sensitive diagnostic marker for Crohn's disease. We sought to explore the role of ASCA as a prognostic marker for aggressive disease phenotype in Crohn's disease. Aims: To determine the role of ASCA status as a risk factor for early surgery in Crohn's disease. Subiects: We performed a case control study in a cohort of patients, newly diagnosed with Crohn's disease, between 1991 and 1999. All patients were followed for at least three years. Case subjects (n = 35) included those who had major surgery for Crohn's disease within three years of diagnosis. Controls (n = 35) included patients matched to cases for age, sex, disease location, and smoking status, and who did not undergo major surgery for Crohn's disease within three years of diagnosis. Methods: Blinded assays were performed on serum for ASCA (immunoglobulin (Ig)A and IgG). A paired analysis of cases-controls was performed to test for the association between ASCA status and risk of early surgery. Results: ASCA IgA was strongly associated with early surgery (odds ratio (OR) 8.5 (95% confidence interval (CI) 2.0-75.9); p = 0.0013). ASCA IgG+ and ASCA lgG+/lgA+ patients were also at increased risk for early surgery (OR 5.5 (95% CI 1.2-51.1), p=0.0265 and OR 5.0 (95% Cl 1.1-46.9), p=0.0433, respectively). The association between ASCA and early surgery was evident in patients requiring surgery for ileal or ileocolonic disease. Conclusions: Patients with Crohn's disease who ore positive for ASCA IgA, IgG, or both, may define a subset of patients with Crohn's disease at increased risk for early surgery.
ACCESSION #
13986660

 

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