Study of Allogeneic Umbilical Cord Blood Infusion for Adults With Ischemic Stroke "CoBIS 2"


Phase 2 Results N/A

Eligibility Criteria

Inclusion Criteria

1. 18-90 years old
2. Recent, acute, cortical, hemispheric, ischemic stroke in the MCA distribution without a clinically significant midline shift as detected by MRI as a DWI abnormality
3. NIHSS 6-15 (R) and 6-18 (L) at the time of enrollment with no more than 4 point increase (worsening of score) from baseline score to 24 hours prior to infusion
4. Subjects must have a platelet count >100,000/µL, hemoglobin >8mg/dL, absolute lymphocyte count (ALC) ≥ 1500, and WBC >2,500/µL
5. Subjects who received tPA or underwent endovascular reperfusion may be included in the study
6. Able to provide consent to study or consent is obtained from the patient's legal representative
7. Subjects of childbearing potential must practice effective contraception during the study, and be willing to continue contraception for at least 6 months after intervention so that, in the opinion of the Investigator, they will not become pregnant during the course of the study
8. Is a good candidate for the trial, in the opinion of the Investigator
9. Agrees to participate in follow-up visits
10. ABO/Rh and race matched CBU(s) with a minimum of 0.5 x 10^7 TNCC/kg based on the pre-cryopreservation TNCC is available for infusion
11. Has not had a disease or therapy that would compromise current immune function.

Exclusion Criteria

An individual is ineligible to participate if any of the following apply:
Exclusionary Medical Conditions:
1. Medical history of neurological or orthopedic pathology with a deficit as a consequence that results in a modified Rankin Scale >1 before stroke or has a pre existing cognitive deficit
2. Clinically significant and/or symptomatic hemorrhage associated with stroke
3. Evidence of significant midline shift as assessed by CT or MRI who are felt to be at high risk for neurological decompensation or need for decompressive hemicraniectomy due to hemispheric edema
4. New intracranial hemorrhage, edema, or mass effect that may place patient at increased risk for secondary deterioration when assessed prior to infusion
5. Hypotension as defined as the need for IV pressor support of SBP <90
6. Isolated brain stem stroke
7. Pure lacunar stroke
8. Requires mechanical ventilation. An exception may be patients who were electively intubated for endovascular reperfusion and then extubated immediately following the procedure.
9. Requires a craniotomy
10. Serious psychiatric or neurological disease which could alter evaluation on functional or cognitive scales
11. Active systemic infection that is felt, at the discretion of the Investigator, to place the patient at increased risk for participation in this study
12. Documentation of human immunodeficiency virus positive (HIV+) status in the medical record
13. Active malignancy within 3 years prior to the start of screening excluding skin cancers other than melanoma
14. Known hypercoagulable state or coagulopathy deficiencies such as Factor V Leiden, Antiphospholipid Syndrome (APC), Protein C, Protein S, anticardiolipin antibody, phospholipid syndrome or Sickle Cell Disease
15. History of or currently active autoimmune disease, or current immunomodulatory therapy or a recipient of immunomodulatory therapy in the past year.
16. Concurrent illness or condition that in the opinion of the Investigator might interfere with treatment or evaluation of safety
17. Current or recent history of alcohol or drug abuse, or stroke associated with drug abuse that Investigator feels may impair therapy or assessments
18. Pregnant as documented by blood test
Prohibited Concomitant or Prior Therapies
1. Patients currently receiving immunosuppressant drugs, not including glucocorticoid taper, topical/inhaled glucocorticoids
2. History of prior transfusion reaction
3. Currently on dialysis
4. Recipient of bone marrow or organ transplant
5. Renal insufficiency with serum creatinine > 2.0 mg/dL
6. Hepatic insufficiency (bilirubin >2.5mg/dL or transaminases >5x the ULN) Patients with Gilberts syndrome are eligible for study enrollment if other liver function tests are normal, regardless of bilirubin level
7. Previous or current treatment with angiogenic growth factors, cytokines, gene or stem cell therapy
8. Participating in another interventional clinical trial of an investigational therapy within 30 days of screening
Other Exclusion Criteria
1. Pregnant or lactating women
2. Unable or unwilling to be evaluated for follow-up visits