Abstract
Purpose
Pharmacodynamic drug-drug interactions (PD DDIs) may influence the safety of non-vitamin K antagonist oral anticoagulants (NOACs), but the extent to which PD DDIs increase bleeding risks, remains unclear. Therefore, the impact of PD DDIs on bleeding outcomes in NOAC-treated patients with atrial fibrillation (AF) was investigated.
Methods
Using Belgian nationwide data, NOAC-treated AF patients were included between 2013–2019. Concomitant use of PD interacting drugs when initiating NOAC treatment was identified.
Results
Among 193,072 patients, PD DDIs were identified in 114,122 (59.1%) subjects. After multivariable adjustment, concomitant use of PD interacting drugs was associated with significantly higher risks of major or clinically-relevant non-major bleeding (adjusted hazard ratio (aHR) 1.19, 95% confidence interval (CI) (1.13–1.24)), gastrointestinal (aHR 1.12, 95%CI (1.03–1.22)), urogenital (aHR 1.21, 95%CI (1.09–1.35)) and other bleeding (aHR 1.28, 95%CI (1.20–1.36)), compared to NOAC-treated AF patients without PD interacting drug use. Increased bleeding risks were most pronounced with P2Y12 inhibitors (aHR 1.62, 95%CI (1.48–1.77)) and corticosteroids (aHR 1.53, 95%CI (1.42–1.66)), followed by selective serotonin or serotonin and norepinephrine reuptake inhibitors (SSRI/SNRI, aHR 1.26, 95%CI (1.17–1.35)), low-dose aspirin (aHR 1.14, 95%CI (1.08–1.20)) and non-steroidal anti-inflammatory drugs (NSAID, aHR 1.10, 95%CI (1.01–1.21)). Significantly higher intracranial bleeding risks in NOAC users were observed with SSRI/SNRIs (aHR 1.50, 95%CI (1.25–1.81)) and corticosteroids (aHR 1.49, 95%CI (1.21–1.84)).
Conclusion
Concomitant use of PD interacting drugs, especially P2Y12 inhibitors and corticosteroids, was associated with higher major, gastrointestinal, urogenital, and other bleeding risks in NOAC-treated AF patients. Remarkably, higher intracranial bleeding risks were observed with SSRI/SNRIs and corticosteroids.
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Acknowledgements
We would like to thank the administrators, data managers, statisticians and other staff of the InterMutualistic Agency (IMA) and Minimal Hospital Dataset (MHD) for providing the data, especially Birgit Gielen (IMA), David Jaminé (IMA), Iris Grant (IMA), Montse Urbina (IMA), Dirk De Kesel (IMA), Sarah Bel (IMA), Jérôme Paque (IMA), Remi Vandereyd (IMA), Xavier Rygaert (IMA), Delfien Verhelst (MHD), Karin Smets (MHD) and Francis Windey (MHD). Moreover, we would like to thank eHealth for the deterministic linkage of both databases. Lastly, we would like to thank Stephan Devriese (Belgian Health Care Knowledge Centre, KCE) for performing the small cell risk analysis.
Funding
This work was supported by the Research Foundation Flanders (FWO) [Grant number 11C0820N to Maxim Grymonprez].
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MG and LL contributed to the concept and design of the study. MG performed the statistical analysis, interpretation and writing under the supervision of LL. AC, SS, KB, AC, EM, AS, MP, TDB and LL revised the manuscript critically. All authors contributed to the article and approved the final manuscript.
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This study was approved by the IMA and MHD database administrators and by the ‘Sectoral Committee of Social Security and Health, Section Health’, a subcommittee of the Belgian Commission for the Protection of Privacy (approval code IVC/KSZG/20/344), waiving the need for individual informed consents [24].
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Outside this manuscript, TDB has served as a chairperson during a lecture for Bayer and Daiichi Sankyo and participated in an expert meeting for Pfizer. Outside this manuscript, LL has been consulted as expert for AstraZeneca. Outside this manuscript, MP and SS have given a lecture sponsored by BMS, LL a lecture sponsored by Chiesi, and SS, LL and MG lectures sponsored by IPSA vzw, a non-profit organization facilitating lifelong learning for pharmacists. No author has received any fees personally.
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Grymonprez, M., Capiau, A., Steurbaut, S. et al. Pharmacodynamic Drug-Drug Interactions and Bleeding Outcomes in Patients with Atrial Fibrillation Using Non-Vitamin K Antagonist Oral Anticoagulants: a Nationwide Cohort Study. Cardiovasc Drugs Ther (2023). https://doi.org/10.1007/s10557-023-07521-5
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DOI: https://doi.org/10.1007/s10557-023-07521-5