PROGRESS PVL is a multicenter open-label single-arm study. Patients were considered eligible if they presented with severe aortic stenosis and were determined by a heart team to be at high risk for surgical valve replacement based on the patient's Society of Thoracic Surgeons (STS) score as well as the presence of other comorbidities. The protocol was approved by locally appointed institutional review boards/ethics committees. The study was conducted in accordance with the International Conference for Harmonization Good Clinical Practice (ICH-GCP) regulations and guidelines and the ethical principles outlined in the Declaration of Helsinki and registered with ClinicalTrials.gov (NCT02987894). All patients gave written informed consent.
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