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Vitamin K Antagonists (VKAs) and Novel Oral Anticoagulants (NOACs) Safety Comparison Based on Data from EudraVigilance Database
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Vitamin K Antagonists (VKAs) and Novel Oral Anticoagulants (NOACs) Safety Comparison Based on Data from EudraVigilance Database
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Journal Article
Vitamin K Antagonists (VKAs) and Novel Oral Anticoagulants (NOACs) Safety Comparison Based on Data from EudraVigilance Database
2025
Overview
Background: Clinical trials comparing novel oral anticoagulants (NOACs) with warfarin reported a lower mortality rate and a reduced incidence of bleeding with NOACs. However, these studies do not allow for final conclusions about safety. Moreover, direct comparisons among NOACs are not available. Objectives: The aim of this study was to analyze data from EudraVigilance in order to compare OAC safety profiles. Methods: We searched for all suspected adverse drug reactions (ADRs) from OACs collected in the EudraVigilance up to March 2019. We calculated the reporting odds ratios (RORs) in order to assess the risk of reporting specific ADRs among drugs. Moreover, OAC safety profiles were investigated through correspondence analysis and visualized in contribution biplots. Results: A total of 244,149 individual case safety reports (ICSRs; 431,354 ADRs) related to OACs were retrieved from EudraVigilance. About 80% of ICSRs refer to NOACs, especially rivaroxaban. Gastrointestinal (Gastr) and central nervous system (Nerv) disorders were the most represented categories. More than 90% of ADRs were serious and almost 9% fatal, with the highest ROR reported for dabigatran. Both fatal and non-fatal ADRs reported for Vitamin K Antagonists (VKAs) differed from those reported for NOACs. Among the latter, dabigatran and rivaroxaban showed similar profiles, while apixaban differed from all other OACs, even in the case of fatal ADRs. Conclusions: As expected, data collected from EudraVigilance showed differences among drugs, probably related to their specific characteristics and/or the peculiar utilization in clinical practice. Further investigations are needed to better compare the safety profile of OACs.
Publisher
MDPI AG
