• Yilong Wang, Yi Lin, Xia Meng, Weiqi Chen, Guohua Chen, Zhimin Wang, Jialing Wu, Dali Wang, Jianhua Li, Yibin Cao, Yuming Xu, Guohua Zhang, Xiaobo Li, Yuesong Pan, Hao Li, Liping Liu, Xingquan Zhao, Yongjun Wang, and PRINCE Protocol Steering Group.
• 1 Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
• Int J Stroke. 2017 Apr 1; 12 (3): 321-325.

AbstractRationale and aim Little is known about the safety and efficacy of the combination of ticagrelor and aspirin in acute ischemic stroke. This study aimed to evaluate whether the combination of ticagrelor and aspirin was superior to that of clopidogrel and aspirin in reducing the 90-day high on-treatment platelet reactivity for acute minor stroke or transient ischemic attack, especially for carriers of cytochrome P450 2C19 loss-of-function allele. Sample size and design This study was designed as a prospective, multicenter, randomized, open-label, active-controlled, and blind-endpoint, phase II b trial. The required sample size was 952 patients. It was registered with ClinicalTrials.gov (NCT02506140). Study outcomes The primary outcome was the proportion of patients with high on-treatment platelet reactivity at 90 days. High on-treatment platelet reactivity is defined as the P2Y12 reaction unit >208 measured using the VerifyNow P2Y12 assay. Conclusion The Platelet Reactivity in Acute Non-disabling Cerebrovascular Events study explored whether ticagrelor combined with aspirin could reduce further the proportion of patients with high on-treatment platelet reactivity at 90 days after acute minor stroke or transient ischemic attack compared with clopidogrel and aspirin.

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