A new analysis of PROGRESS-CTO (PROspective Global REgiStry for the Study of Chronic Total Occlusion Intervention; www.progresscto.org), an international multi-center registry of chronic total occlusion (CTO) percutaneous coronary intervention (PCI), was presented today as late-breaking clinical research at the Society for Cardiovascular Angiography & Interventions (SCAI) 2022 Scientific Sessions.