A Dose Escalation and Safety Study of I5NP in Patients Undergoing Major Cardiovascular Surgery

This is a Phase 1, randomized, double-blind, dose escalation, safety and pharmacokinetic study. The study will be conducted in approximately 8-10 centers in the United States and Switzerland. Up to 32 patients who have undergone major cardiovascular surgery will participate. Patients will receive a single IV injection of I5NP or placebo following cardiovascular surgery. I5NP will be administered 4 hours (+/- 30 minutes) following removal of the cardiopulmonary bypass machine (CBM). The duration of the study is approximately 44 days, inclusive of a 14 day screening period. Patients will be contacted by phone at 6 and 12 months for follow-up questions. Patient visits are screening, day of surgery, hospital in-patient Days 1, 2, 3 and Day 7 or hospital discharge. Safety follow-up will continue until 30 days post-surgery. 2 phone calls will be made at 6 and 12 months after date of surgery.