Abstract:
STUDY OBJECTIVE:Evaluate dabigatran adverse event reports with a reported bleeding event and/or reported fatal outcome compared with warfarin. DESIGN:Retrospective analysis of the FDA Adverse Event Reporting System (FAERS) database. MEASUREMENTS AND MAIN RESULTS:We identified reports from October 1, 2010, through December 31, 2011, in the United States listing dabigatran or warfarin as the primary suspected agent. Bleeding events and related outcomes were determined. A bleeding-related mortality rate was calculated based on national dabigatran treatment data. RESULTS:Dabigatran was the primary suspected agent in 9029 adverse reports. Of these, 2347 (26%) were bleeding events; a fatal outcome was reported in 348 (15%) of the bleeding events. In comparison, warfarin was the suspected agent in 2038 reports, of which 647 (32%) were reported as bleeding events. Among the warfarin bleeding reports, 46 (7.1%) reported a fatal outcome. Based on national dabigatran use and adverse bleed reports with fatal outcomes, we estimate a lower bound of 150 bleeding-related fatalities per 100,000 dabigatran patient-years. Because of underreporting bias, these estimates represent a lower bound on the population bleeding mortality rates. CONCLUSION:Reports from FAERS are subject to significant bias but suggest that fatal outcomes among dabigatran reports are higher in clinical practice than they were in controlled clinical trials.
journal_name
Pharmacotherapyjournal_title
Pharmacotherapyauthors
McConeghy KW,Bress A,Qato DM,Wing C,Nutescu EAdoi
10.1002/phar.1415subject
Has Abstractpub_date
2014-06-01 00:00:00pages
561-9issue
6eissn
0277-0008issn
1875-9114journal_volume
34pub_type
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