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News

Thiopurines or anti-TNF in post-operative Crohn's disease maintenance

The latest issue of the Alimentary Pharmacology & Therapeutics reviews the use of thiopurines or anti-TNF in post-operative Crohn's disease maintenance.

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Post-operative recurrence of Crohn's disease is an important management challenge, with 2-year recurrence rates defined by clinical, endoscopic and radiological parameters of up to 77%, 64% and 49%.

Clinical and severe endoscopic recurrence vary widely in controlled trials from 13% to 36%, and 22% to 56% with thiopurine treatment or 0% and 9% with infliximab treatment respectively at 1 year.

Dr Jones and colleagues from the United Kingdom reviewed the evidence for thiopurine or anti-TNF use in post-operative Crohn's disease, and assessed the ability to identify those patients at highest risk of recurrent disease.

The team performed a literature search using Medline, Embase and Cochrane databases to identify studies using search terms ‘thiopurine’, ‘azathioprine’, ‘mercaptopurine’, ‘Infliximab’, ‘adalimumab’, ‘Anti-TNF‘, ‘Crohn's disease’, ‘post-operative’ and ‘recurrence’.

Trials to examine this important area have proved difficult to execute, with recruitment and retention of patients posing major challenges to randomized clinical trials.

The efficacy data for thiopurine use in this setting are inconclusive
Alimentary Pharmacology & Therapeutics

There have been 4 trials of 433 patients of thiopurine therapy, and 1 of anti-TNF therapy involving 24 patients.

The team observed that the efficacy data for thiopurine use in this setting are inconclusive, and other than smoking.

The team found no consistent predictors of post-operative relapse.

Dr Jones' team commented, "At present, evidence for routine use of thiopurine treatment in post-operative Crohn's disease is heterogeneous and unconvincing."

"Stratification by risk of relapse emerges as a key challenge in post-operative management that needs to be addressed, using clinical parameters and emerging biomarkers."

"The evidence for prophylactic anti-TNF use is limited though promising, with its routine use guided by early assessment of relapse."

Aliment Pharmacol Ther 2014: 39(11): 1253-1265
15 May 2014

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