Safety and Effect of SANGUINATE™ Infusion in Patients at Risk of Delayed Cerebral Ischemia (DCI) Following Subarachnoid Hemorrhage (SAH)

The purpose of this study is to study the safety and effect of SANGUINATE on patients
suffering from delayed cerebral ischemia after acute aneurysmal subarachnoid hemorrhage.

Inclusion Criteria:

- Signed and dated written informed consent by the subject or his/her legally
authorized representative;

- Modified Rankin (mRankin) score of 0 or 1 prior to the onset of subarachnoid
hemorrhage;

- Ruptured aneurysm secured by endovascular coil embolization or surgical clipping (the
Procedure), not more than 72 hours after the onset of subarachnoid hemorrhage; and

- Hunt and Hess (H&H) grade 3 or 4, or World Federation of Neurological Surgeons (WFNS)
score 3 or 4 prior to the Procedure, and Modified Fisher (mFisher) grade 3 or 4,
prior to the Procedure; or

- Clinical signs of ("symptomatic") delayed cerebral ischemia; or

- Angiographic evidence of cerebral vasospasm

Exclusion Criteria:

- In the judgment of the Investigator the patient is not a good candidate for the study

- Evidence of rebleed following the Procedure

- Subarachnoid hemorrhage secondary to trauma or to arteriovenous malformation

- Diagnosed moderate to severe pulmonary hypertension

- Radiologically confirmed moderate to severe pulmonary edema (as shown by the presence
of Kerley lines, peribronchial cuffing, thickened interlobar fissure, consolidation
and/or pleural effusion)

- History within the past 6 months and/or finding of decompensated heart failure

- Acute myocardial infarction within 3 months prior to the administration of the study
drug

- Left ventricular ejection fraction <40%, as determined by prior echocardiography or
clinical signs of CHF

- Medical history or concurrent evidence of moderate to severe renal insufficiency
(estimated creatinine clearance < 30 mL/min)