Volume 9, Issue 5 pp. 281-289
Original Contributions

Defining complex contributions of NOD2/CARD15 gene mutations, age at onset, and tobacco use on Crohn's disease phenotypes

Dr. Steven R. Brant

Corresponding Author

Dr. Steven R. Brant

The Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center, Dept. of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, U.S.A.

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

Johns Hopkins University School of Medicine, 1503 East Jefferson Street, Room B136, Baltimore, MD 21231-1001, U.S.A.Search for more papers by this author
Michael F. Picco

Michael F. Picco

Department of Gastroenterology, Mayo Clinic, Jacksonville, Florida, U.S.A.

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Jean-Paul Achkar

Jean-Paul Achkar

Department of Gastroenterology, The Cleveland Clinic Foundation, Cleveland, Ohio, U.S.A.

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Theodore M. Bayless

Theodore M. Bayless

The Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center, Dept. of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, U.S.A.

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Sunanda V. Kane

Sunanda V. Kane

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

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Aaron Brzezinski

Aaron Brzezinski

Department of Genetic Epidemiology, Johns Hopkins School of Public Health, Baltimore, Maryland, U.S.A.

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Franklin J. Nouvet

Franklin J. Nouvet

The Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center, Dept. of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, U.S.A.

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Denise Bonen

Denise Bonen

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

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Amir Karban

Amir Karban

The Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center, Dept. of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, U.S.A.

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Themistocles Dassopoulos

Themistocles Dassopoulos

The Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center, Dept. of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, U.S.A.

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Reda Karaliukas

Reda Karaliukas

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

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Terri H. Beaty

Terri H. Beaty

Department of Genetic Epidemiology, Johns Hopkins School of Public Health, Baltimore, Maryland, U.S.A.

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Stephen B. Hanauer

Stephen B. Hanauer

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

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Richard H. Duerr

Richard H. Duerr

Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, School of Medicine, and Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A.

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Judy H. Cho

Judy H. Cho

The Martin Boyer Genetics Research Laboratories, Department of Medicine, University of Chicago Hospitals, Chicago, Illinois, U.S.A.

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First published: 14 December 2006
Citations: 41

Abstract

Background Multiple factors, particularly IBD family history, tobacco use, age at diagnosis and recently, NOD2 mutant genotypes may influence Crohn's disease (CD) heterogeneity. Methods We performed a multicenter retrospective record analysis of 275 unrelated patients with CD. Age at diagnosis, IBD family history, Jewish ethnicity, tobacco use at diagnosis, surgical history, disease site and clinical behavior were correlated with genotypes for NOD2 mutations, and all risk factors were assessed for independent influence on outcomes of disease site, behavior and surgery free survival. Results Risk of ileal disease was increased for CD patients with two NOD2 mutations (Odds Ratio, O.R. 10.1), a smoking history (O.R. 2.25 per pack per day at diagnosis) or a younger age at diagnosis (O.R. 0.97 per each increased year). Presence of ileal disease (O.R. 4.8) and carrying one or two NOD2 mutations (O.R. 1.9 and 3.5, respectively) were independent risk factors for stricturing or non-perianal fistulizing behavior. Ileal disease, youthful onset and smoking at diagnosis (but not NOD2 mutations) were risk factors for early surgery. Conclusions Carrying two NOD2 mutations predicts youthful onset, ileal disease involvement, and development of stricturing or non-perianal fistulizing complications. Smoking and early onset independently influence ileal site and time to surgery.

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