Overview Total Occlusion Study in Coronary Arteries - 5 Status: Completed Trial end date: 2016-07-01 Target enrollment: Participant gender: Summary A prospective, multi-center, double blind, 2 stage, placebo-controlled, phase II study, evaluating acute intra-coronary injected collagenase prior to routine standard-of-care percutaneous revascularization procedures in subjects with chronic total coronary artery occlusions (CTOs). Phase: Phase 2 Details Lead Sponsor: Matrizyme Pharma Corporation