British Medical Bulletin Advance Access published online on October 24, 2009
British Medical Bulletin, doi:10.1093/bmb/ldp036
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The implications of anti-tumour necrosis factor therapy for viral infection in patients with inflammatory bowel disease
Gastrointestinal Section, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London W12 0NN, UK
* Correspondence to: Dr M. J. Shale, Department of Gastroenterology, Hammersmith Hospital, 3rd Floor, Hammersmith House, Du Cane Road, London W12 0NN, UK. E-mail: m.shale{at}imperial.ac.uk
Introduction: Anti-tumour necrosis factor (TNF) therapy is increasingly used in the management of inflammatory bowel disease; however, concerns have been raised regarding risk of infection with such drugs. Little is known about their effect upon viral infection.
Sources of data: A search of PubMed using the terms infliximab, etanercept, adalimumab or anti-TNF therapy combined with the names of specific viruses was performed. A search of cited papers was used to identify further relevant reports.
Areas of agreement: Numerous reports of the use of anti-TNF in patients with chronic or latent viral infection appear in the literature. Specific problems related to hepatitis B virus and varicella zoster virus may exist. The safety profile of anti-TNF in chronic viral infection is generally reassuring.
Areas of controversy: Numerous consensus statements relating to pre-treatment serology or vaccination have recently appeared; however, significant variation exists in their recommendations.
Growing points: Increasing awareness of the implications of anti-TNF therapy on viral infection may allow safer use of such drugs.
Areas timely for developing research: The clinical and cost-effectiveness of screening for viral infections prior to anti-TNF requires further study.
Keywords: anti-TNF viral infection hepatitis B virus varicella zoster virus
Accepted for publication September 18, 2009.