The purpose of this funding opportunity announcement (FOA) is to invite applications to participate as a Regional Coordinating Stroke Center in the NINDS Stroke Trials Network. The primary goal of this network is to maximize efficiencies to develop, promote and conduct high-quality, multi-site clinical trials focused on key interventions in stroke prevention, treatment, and recovery with the objective to have a balanced portfolio between all three approaches. Exploratory phase 1, 2 and confirmatory phase 3 clinical trials as well as biomarker-validation studies that are immediately preparatory to trials will be coordinated through separate National Clinical Coordinating and Data Management Centers.