The Medical Letter on Drugs and Therapeutics
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1287
Correction: Natalizumab (Tysabri) for Crohn's Disease
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The May 5, 2008 article (Med Lett Drugs Ther 2008; 50:34) on the approval of natalizumab (Tysabri) for treatment of Crohn's disease in the "Adverse Effects" section on page 35 included the statement: "post-marketing hepatotoxicity, sometimes fatal or requiring liver transplantation, has occurred." Actually, no fatal hepatotoxicity or liver transplantation has been reported to date. The FDA warning about post-marketing hepatotoxicity with Tysabri that was the basis for our statement said: "The combination of transaminase elevations and elevated bilirubin without evidence of obstruction is recognized as an important predictor of severe liver injury that may lead to [emphasis added] death or the need for a liver transplant in some patients." Also, in the last sentence of the Conclusion, we should have said: "Because of the risk of serious hepatic toxicity and the rare but even ... more      

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Title: Correction: Natalizumab (Tysabri) for Crohn's Disease
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