Overview Safety and Efficacy Study of Alfimeprase in Subjects With Occluded Central Catheters Status: Completed Trial end date: 2006-12-01 Target enrollment: Participant gender: Summary The purpose of the study is to compare the safety and effectiveness of alfimeprase to a placebo in restoring function of occluded central catheters. Phase: Phase 3 Details Lead Sponsor: ARCA Biopharma, Inc.