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Adalimumab versus azathioprine to halt the progression of bowel damage in Crohn's disease: application of Lémann Index.

Davide Giuseppe RibaldoneGian Paolo CavigliaRinaldo PellicanoMarta VerneroAndrea ItaliaMario MorinoGiorgio Maria SaraccoMarco Astegiano
Published in: Scandinavian journal of gastroenterology (2019)
Background: The Lémann Index (LI) was recently developed to evaluate the cumulative bowel damage in patients with Crohn's disease (CD).Aims: To search for a difference between adalimumab and azathioprine to halt the progression of bowel damage in active CD, using the LI.Methods: A single-centre, retrospective study was conducted. Patients with CD were included if they had colonoscopy and magnetic resonance enterography performed within 4 months from the start of adalimumab or azathioprine and repeated after 12 months of therapy. Primary outcome was reached if the increase of LI after 12 months of treatment was <0.3, the drug was not stopped, and the use of systemic steroids was continued for no more than 3 months.Results: Ninety-one patients were enrolled, 31 (34.1%) of them treated with adalimumab and 60 (65.9%) with azathioprine. Sixty-seven percent of patients treated with adalimumab reached the primary outcome compared to 28.3% of patients treated with azathioprine (p = .0006). The LI in the group on adalimumab therapy decreased after 12 months (from 9.9 to 8.8), while in the group on azathioprine therapy it increased (from 7.7 to 8.8).Conclusion: Treatment with adalimumab halts the progression of bowel damage in CD while that with azathioprine does not.
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