Background Randomized clinical trials have demonstrated that endovascular thrombectomy reduces functional disability in patients with large ischemic stroke; arterial collateral status might be used to select these patients for endovascular thrombectomy. Purpose To investigate whether arterial collateral status modifies the treatment effect of endovascular thrombectomy in patients with large ischemic stroke. Materials and Methods The Efficacy and Safety of Thrombectomy in Stroke with …