Overview Phase I/II Study of Monoclonal Factor IX Concentrate for Factor IX Deficiency Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary OBJECTIVES: Assess the safety and long-term efficacy of monoclonal factor IX concentrate in patients with factor IX deficiency. Phase: Phase 1/Phase 2 Details Lead Sponsor: National Center for Research Resources (NCRR)Collaborator: University of North Carolina