Abstract
Purpose
Patients with minor ischemic stroke (MIS) are at high risk of recurrent ischemic stroke (RIS). The aim of this study was to evaluate the effects of platelet receptor gene (P2Y12, P2Y1) and glycoprotein gene (GPIIIa) polymorphisms, as well as their interactions, on antiplatelet drug responsiveness and clinical outcomes in patients with acute MIS.
Methods
We prospectively enrolled 426 patients with acute MIS who had been receiving combined aspirin and clopidogrel treatment for at least 3 months. Prevalence of seven variants in P2Y12, P2Y1, and GPIIIa genes were examined using mass spectrometry. Gene-gene interactions were evaluated using generalized multifactor dimensionality reduction (GMDR) analysis. Antiplatelet drug responsiveness was assessed by platelet aggregation assay. All patients were followed for 90 days. Primary outcomes were defined as a composite of RIS, myocardial infarction (MI), and death.
Results
The incidence of primary outcomes was 10.8% (46/426; 40 had RIS, 2 died, and 4 had MI) during the first 90 days after stroke. No significant differences were found regarding genotype frequencies of the seven variants between those with and without incidence of primary outcomes. However, we observed significant gene-gene interaction between rs16863323 and rs2317676 polymorphisms. The high-risk interactive genotypes were independently associated with poor antiplatelet drug responsiveness and increased risk of primary outcomes.
Conclusion
Responsiveness to antiplatelet drugs and the risks for adverse clinical events in this MIS cohort appear to be multifactorial since the outcomes were not mediated by single gene polymorphisms.
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The authors declare that they have no conflict of interest.
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The study was approved by the Ethics Committees of the People’s Hospital of Deyang City and The Third Affiliated Hospital of Wenzhou Medical College and is in accordance with the principles stated in the Declaration of Helsinki.
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Informed consent was obtained from all individual participants included in the study.
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Clinical Trial Registration Information: http://www.chictr.org/. Unique Identifier: ChiCTR-OCH-14004724.
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Yi, X., Zhou, Q., Wang, C. et al. Platelet receptor Gene (P2Y12, P2Y1) and platelet glycoprotein Gene (GPIIIa) polymorphisms are associated with antiplatelet drug responsiveness and clinical outcomes after acute minor ischemic stroke. Eur J Clin Pharmacol 73, 437–443 (2017). https://doi.org/10.1007/s00228-017-2198-2
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DOI: https://doi.org/10.1007/s00228-017-2198-2