The Asymptomatic Carotid Surgery Trial-2 (ACST-2): an ongoing randomised controlled trial comparing carotid endarterectomy with carotid artery stenting to prevent stroke.

This ongoing trial, comparing the long-term benefits of carotid surgery with carotid stenting, had recruited over 2000 patients by March 2016, will complete recruitment of 3600 by 2020 and report initial results in 2021.

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