Current status and future perspectives of platelet function‐guided precision antiplatelet therapy for patients with cerebral infarction

Abstract

Current evidence indicates that antiplatelet therapy as a cornerstone for secondary prevention of cerebral infarction. However, ischemic or bleeding events arising from antiplatelet drug resistance or excessive platelet inhibition can diminish its clinical benefit. These challenges have laid the foundation for individualized antiplatelet treatment. Although cytochrome P450 family 2 subfamily C member 19 ( CYP2C19 ) genetic polymorphisms have partially addressed the issue of drug resistance in these patients, they remain insufficient to resolve the high incidence of both ischemic and bleeding events. Platelet function testing (PFT)‐guided antiplatelet therapy has been proven beneficial in patients after percutaneous coronary intervention, yet its efficacy in patients with cerebral infarction remains controversial. Platelet function provides a direct and comprehensive reflection of antiplatelet effects, offering potential not only to overcome drug resistance but also to guide de‐escalation strategies, thereby mitigating the frequent occurrence of both ischemic and bleeding events in cerebral infarction. Overall, the current application of PFT to guide personalized antiplatelet regimens in patients with cerebral infarction is characterized by considerable variability. In light of recent advances in this field, we herein review the current landscape of PFT‐guided individualized antiplatelet therapy in cerebral infarction, with the aim of summarizing existing evidence and offering suggestions for future research.