Safety Study of PP-007 in Subjects With Acute Ischemic Stroke

Description

The HEMERA-1 Extension (Part III) is a prospective, open-label, multicenter study to evaluate safety of two doses of PP-007 in Acute Ischemic Stroke (AIS) subjects receiving Intravenous Thrombolysis (IVT) or mechanical thrombectomy (MT) or IVT+MT as standard of care (SOC). Subjects will receive two doses of PP-007 infusion 24 ± 6 hours apart in addition to the site-specific SOC protocol. PP-007 is PEGylated bovine carboxyhemoglobin and will be administered via IV infusion. The effects on collateral flow, infarct size and functional outcomes will be evaluated.

Conditions

Acute Ischemic Stroke

Study Overview

Study Details

Study overview

The HEMERA-1 Extension (Part III) is a prospective, open-label, multicenter study to evaluate safety of two doses of PP-007 in Acute Ischemic Stroke (AIS) subjects receiving Intravenous Thrombolysis (IVT) or mechanical thrombectomy (MT) or IVT+MT as standard of care (SOC). Subjects will receive two doses of PP-007 infusion 24 ± 6 hours apart in addition to the site-specific SOC protocol. PP-007 is PEGylated bovine carboxyhemoglobin and will be administered via IV infusion. The effects on collateral flow, infarct size and functional outcomes will be evaluated.

A Randomized, Phase 1, Contemporaneously Controlled, Multicenter Study to Assess the Safety of PP-007 in Subjects With Acute Ischemic Stroke (HEMERA-1)

Safety Study of PP-007 in Subjects With Acute Ischemic Stroke

Condition
Acute Ischemic Stroke
Intervention / Treatment

-

Contacts and Locations

Jacksonville

Baptist Health Research Institute, Jacksonville, Florida, United States, 32207

Miami

Baptist Health Miami Cardiac & Vascular Institute (MCVI), Miami, Florida, United States, 33176

Atlanta

Emory University School of Medicine, Atlanta, Georgia, United States, 30303

Kansas City

Saint Luke's Hospital, Kansas City, Missouri, United States, 64111

Toledo

Mercy Health - St. Vincent Medical Center, Toledo, Ohio, United States, 43608

Oklahoma City

University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States, 73104

Portland

Oregon Stroke Center at Oregon Health & Science University (OHSU), Portland, Oregon, United States, 97239

Pittsburgh

UPMC Stroke Institute, Pittsburgh, Pennsylvania, United States, 15213

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

For general information about clinical research, read Learn About Studies.

Eligibility Criteria

  • 1. Subject or subject's LAR has provided informed consent.
  • 2. ≥18 years of age.
  • 3. If the patient were to receive MT, patient must have a history of last seen well ≤ 24 hours prior to start of MT
  • 4. If the patient were to receive IVT, patient must have a history of last seen well ≤ 4.5 hours prior to start of IVT or as per Institution SOC Note: Onset is defined as the time point when symptoms first began, or if unknown, the last time point when the subject reported or was observed having normal (baseline) neurological function.
  • 5. AIS patient with ASPECTS ≥ 3 to 10
  • 6. AIS patient with life expectancy of 90 days, as determined by the investigator
  • 7. Patient with disabling stroke defined as baseline NIHSS ≥ 6 prior to IP administration
  • 8. mRS ≤ 2 (pre-morbid), prior to onset of symptoms (self-reported or family/caregiver reported)
  • 9. At the time of stroke, patient must be living in their own home, apartment or seniors lodge where no nursing care/support is required
  • 10. Subject and caregiver are available for protocol-required follow-up visits
  • 11. Contraception and pregnancy:
  • 1. Male subjects, and females of childbearing potential (subjects and female partners of male subjects who are ovulating, premenopausal, and not surgically sterile) must use a highly effective method of contraception consistently and correctly during study participation and up to 90 days following PP-007 infusion.
  • 2. Highly effective methods of contraception are those that, either alone or in combination, result in a failure rate of \<1% per year when used consistently and correctly, including:
  • 1. ASPECTS \< 3 on NCCT
  • 2. Multi-arterial territorial strokes (e.g. bilateral, anterior and posterior circulation)
  • 3. Evidence of symptomatic intracranial hemorrhage, including subarachnoid hemorrhage, on initial CTA/CTP, or history of intracranial hemorrhage within the last 30 days.
  • 4. Pre-existing neurological or psychiatric disease that would confound neurological or functional evaluations in the opinion of the Investigator.
  • 5. A seizure at stroke onset that precludes obtaining an accurate screening NIHSS and mRS assessment
  • 6. Clinical history, past imaging, or clinical judgment suggests that the intracranial occlusion is chronic
  • 7. History of severe head injury within 90 days of Baseline with residual neurological deficit at the time of AIS.
  • 8. Clinically significant heart disease including:
  • 9. Refractory BP (systolic \>200 and/or diastolic \>120 mmHg).
  • 10. Confirmed diagnosis of septic embolus or bacterial endocarditis within the past six months.
  • 11. Aortic dissection.
  • 12. Contraindication to radiographic imaging procedures including:
  • 13. Prior treatment (within the last 30 days) or planned concurrent treatment with an investigational medication or device.
  • 14. Blood glucose \<50 mg/dL (2.78 mmol) or \>400 mg/dL (22.20 mmol) that is not responsive to appropriate treatment at Baseline.
  • 15. Known bleeding disorder (e.g., coagulopathy or thrombocytopenia).
  • 16. Known history or current evidence of renal or hepatic disease including:
  • 1. Documented renal insufficiency (serum creatinine \>3.0 × ULN).
  • 2. History of liver disease (i.e., alanine transaminase \[ALT\] and/or Aspartate transaminase (AST) \>2 × ULN and/or conjugated bilirubin \>1.5 mg/dL).
  • 17. Mass effect or intracranial mass on NCCT defined as:
  • 1. Significant mass effect with midline shift ≥8 mm.
  • 2. Evidence of intracranial mass (except for small non-clinically significant meningioma based on the Investigator's discretion).
  • 18. Employee of Prolong Pharmaceuticals or its designated clinical research organization or an employee or relative of the Investigator.
  • 19. Any condition or situation which may put the subject at significant risk, may confound the study results, or may interfere significantly with the subject's participation in the study in the opinion of the Investigator.
  • 20. Intracranial neoplasm, arteriovenous malformation, or aneurysm 21. Participation in another clinical trial investigating a drug, medical device, or a medical procedure in the 30 days preceding study inclusion Note: LVO and/or SVO will be allowed as long as the respective study subject meets the inclusion and exclusion criteria defined above.
  • 1. AIS patient with ASPECTS ≥ 3 to 10
  • 1. Multi-arterial territorial strokes (e.g. bilateral, anterior and posterior circulation)
  • 2. Evidence of symptomatic intracranial hemorrhage, including subarachnoid hemorrhage, on NCCT or CTA/CTP.
  • 3. Clinically significant heart disease including:
  • 4. Refractory BP (systolic \>200 and/or diastolic \>120 mmHg). 5. Confirmed diagnosis of septic embolus or bacterial endocarditis. 6. Aortic dissection. 7. Blood glucose \<50 mg/dL (2.78 mmol) or \>400 mg/dL (22.20 mmol). 8. Known bleeding disorder (e.g., coagulopathy or thrombocytopenia).
  • 1. Documented renal insufficiency (serum creatinine \>3.0 × ULN).
  • 2. Documented liver disease (i.e., alanine transaminase \[ALT\] and/or Aspartate transaminase (AST) \>2 × ULN and/or conjugated bilirubin \>1.5 mg/dL).
  • 10. Mass effect or intracranial mass on NCCT defined as:
  • 11. Intracranial neoplasm, arteriovenous malformation, or aneurysm 12. Any condition or situation which may put the subject at significant risk, may confound the study results, or may interfere significantly with the subject's participation in the study in the opinion of the Investigator.
  • 1. Parenchymal hematoma (PH-1 and PH-2)
  • 2. Symptomatic intracranial hemorrhage
  • 3. Hemicraniectomy
  • 4. Midline shift ≥ 8 mm
  • 5. Mass effect
  • 6. Significant cerebral edema Note: LVO and/or SVO will be allowed as long as the respective study subject meets the inclusion and exclusion criteria defined above. The decision to administer the 2nd dose will be based on subject's safety and PI's discretion.

Ages Eligible for Study

18 Years to

Sexes Eligible for Study

ALL

Accepts Healthy Volunteers

No

Collaborators and Investigators

Prolong Pharmaceuticals,

Kirsten Gruis, MD, STUDY_DIRECTOR, Prolong Pharmaceuticals, LLC

Study Record Dates

2025-02-28