Safety of deferasirox: a retrospective cohort study on the risks of gastrointestinal, liver and renal events.

Abstract:

BACKGROUND:Deferasirox (DFX) is an effective and well-tolerated oral iron chelator elevating the adherence to iron chelating therapy among patients with iron overload. However, the US Food and Drug Administration issued a warning about the potential adverse events associated with DFX in 2010. METHODS:To examine the risks of gastrointestinal (GI) bleeding, acute liver necrosis, and acute renal failure among DFX users compared with desferrioxamine (DFO) users in a real-world setting, first-time users of DFX or DFO between 2005 and 2008 in Taiwan's National Health Insurance database were observed in this population-based retrospective cohort study. The risks of different adverse events were individually analyzed by Cox proportional hazards models and adjusted by age, sex, concomitant medications, and prior medical conditions. RESULTS:Deferasirox users had the highest incidence rates of GI bleeding (2.03 per 10 000 patient-days), acute liver necrosis (0.26 per 10 000 patient-days) and acute renal failure (1.45 per 10 000 patient-days) compared with other iron chelator users. Compared with DFO users, DFX users were not associated with the risk of GI bleeding (adjusted HR 1.03, 95% CI 0.61-1.74, p = 0.90) and the risk of acute liver necrosis (adjusted HR 2.13, 95% CI 0.49-9.33, p = 0.32). The association between DFX use and acute renal failure was found to be statistically significant (HR 2.18, 95% CI 1.18-4.02, p = 0.01; adjusted HR 2.41, 95% CI 1.27-4.58, p = 0.01). CONCLUSION:In this study, we found statistically significant higher risk of acute renal failure and non-statistically significant higher risk of GI bleeding and acute liver necrosis associated with DFX use. More researches are warranted to evaluate the association between DFX use and potential adverse events.

authors

Huang WF,Chou HC,Tsai YW,Hsiao FY

doi

10.1002/pds.3657

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

1176-82

issue

11

eissn

1053-8569

issn

1099-1557

journal_volume

23

pub_type

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