The Pathogenicity of Cytomegalovirus in Inflammatory Bowel Disease: A Systematic Review and Evidence-based Recommendations for Future ResearchHommes, Daniël W. MD, PhD*; Sterringa, Gerben MD*; van Deventer, Sander J. H. MD, PhD*; Tytgat, Guido N. J. MD, PhD*; Weel, Jan MD†Inflammatory Bowel Diseases: May 2004 - Volume 10 - Issue 3 - pp 245-250 Original Contributions Abstract Author Information During recent years, a clear association between complicated courses of ulcerative colitis and the presence of cytomegalovirus (CMV) has been established. The exact pathogenic role of CMV in these patients remains unclear despite a great number of published reports. Therefore, we undertook a systematic review to appraise critically all available evidence ìn the literature on the role of CMV during inflammatory bowel disease. We identified and analyzed more than 30 case reports and 9 case series. Based on these results, we propose a model for viral replication during inflammation and provide recommendations for future research. From the Departments of *Gastroenterology and Hepatology and †Clinical Virology, Academic Medical Centre, Amsterdam, The Netherlands. Received for publication March 10, 2003; accepted August 25, 2003. Reprints: Dr. D. W. Hommes, Department of Gastroenterology and Hepatology, Academic Medical Centre, C2-116, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands (e-mail: firstname.lastname@example.org). © Crohn's & Colitis Foundation of America, Inc.