Study to Determine The Effect of a Drug Called Neupogen on Stroke Recovery (GIST)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00809549
Recruitment Status : Unknown
Verified July 2012 by Ottawa Hospital Research Institute.
Recruitment status was:  Active, not recruiting
First Posted : December 17, 2008
Last Update Posted : July 13, 2012
Information provided by (Responsible Party):
Ottawa Hospital Research Institute

Brief Summary:
  1. Circulating bone marrow and blood vessel precursors home in to sites of ischemia and aid regeneration of injured tissue
  2. Increasing the number of circulating precursors will improve in regeneration of damaged brain following ischemic stroke.

Condition or disease Intervention/treatment Phase
Ischemic Stroke Drug: Filgrastim Phase 1

Detailed Description:

We hypothesize that mobilization of bone marrow precursor cells into the blood stream will allow them to redistribute in the injured central nervous system and aid regeneration of damaged tissue. If the hypotheses is correct, it predicts that G-CSF treatment will improve the functional outcome of patients following acute ischemic stroke.

Underlying this work are the following considerations:

  • Currently the clinical and functional outcomes following ischemic strokes are poor and require new treatment strategies.
  • G-CSF administration is a well established routine treatment for the mobilization of hematopoietic and endothelial precursors from the bone marrow into the circulation.
  • Acute ischemia locally increases factors that direct circulating bone marrow derived cells to home to these sites of injury.
  • Evidence exists that bone marrow derived cells are able to repopulate different tissues including those of the CNS.
  • Acute ischemic injury to the central nervous system provides a milieu for the regeneration of neural tissue.

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Granulocyte-Colony Stimulating Factor In Ischemic Stroke (GIST): A Pilot Study
Study Start Date : July 2006
Estimated Primary Completion Date : April 2013
Estimated Study Completion Date : April 2013

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Placebo Comparator: Normal Saline Drug: Filgrastim
10 ug/kg sc once daily x 4 days. Repeated once, 6 weeks later.
Other Names:
  • Brand Name: Neupogen
  • rhG-CSF

Experimental: Filgrastim Drug: Filgrastim
10 ug/kg sc once daily x 4 days. Repeated once, 6 weeks later.
Other Names:
  • Brand Name: Neupogen
  • rhG-CSF

Primary Outcome Measures :
  1. A statistically significant increase in: mortality/ non-fatal grade III or greater adverse events measured by the NCI Common Toxicity Scale/ incidence of recurrent strokes/ worsening of neurological disabilities measured by standardized stroke scales. [ Time Frame: 6 weeks, 3 months, 6 months and 12 months after the first dose of the study drug. ]

Secondary Outcome Measures :
  1. The secondary endpoints address the feasibility and efficacy of the study treatment: adequacy of bone marrow cell mobilization/ validation of imaging sequences/ Identification of optimal parameters for follow-up to be used in a subsequent larger trial. [ Time Frame: 6 weeks, 3 months, 6 months and 12 months after the first dose of the study drug. ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   45 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patient is between 45 and 85 years of age
  • Patient is of either gender
  • The qualifying stroke is ischemic with a total NIH Stroke Score less than 18.
  • The stroke involves the non-dominant hemisphere including the cerebral cortex and results in hemiparesis. The inclusion of sub-cortical strokes will be permitted if the size is of 3 cm or greater. Patients suffering strokes involving the dominant hemisphere resulting in mild dysphasia are also eligible.
  • The stroke is classified as a partial anterior cerebral syndrome by the Oxfordshire Criteria.
  • NIHSS at baseline evaluation with:

    *Level of consciousness is not impaired as defined by an NIHSS between 0 and 1 on question 1a and

  • Hemiparesis as defined by

    • an NIHSS between 1 and 4 on questions 5 and/or
    • an NIHSS between 1 and 4 on questions 6.
  • Be able to start the experimental treatment a minimum of 3 days and a maximum of 10 days after the initial presentation with the stroke,
  • Patient or surrogate gives informed consent,
  • The patient is fluent in either French or English.

Exclusion Criteria:

  • Patient with hemorrhagic stroke,
  • Patients with a pre-morbid modified Rankin score > 2 (Appendix 3b),
  • Patients with pre-morbid dementia by DSM-IV criteria.
  • Patients with a known allergic reaction to G-CSF or a component of G-CSF.
  • Patients with one or more significant co-morbidities expected to limit lifespan to less than 12 months. Examples include but are not limited to:

    • > CHF Class II NYHA
    • Known prior or ongoing malignancy except non-melanomatous skin cancer.
    • Acute or chronic infections (HIV, TB, etc.. )
    • Other significant cardiac, renal, hepatic or pulmonary dysfunction.
  • Patients with organ dysfunction that would preclude tests required for this study. Examples include but are not limited to:

    *Serum Cr > 200 μmol/L that would prevent administration of contrast dye.

  • Patients with a known history of bone marrow dysfunction, such as myeloid leukemia or myeloproliferative state that would prevent treatment with G-CSF.
  • Patients with metal implants that would preclude MRI examination including but not limited to patients with

    • pacemakers,
    • ear implants, and
    • aneurysm brain clips.
  • Patients with:

    • a history compatible with a thrombophilic state or
    • with a pre-existing known thrombophilic state.
  • Patient unwilling or unable to comply with trial requirements.
  • Patients with an ongoing history of illicit drug use.
  • Female patients of child-bearing potential.
  • Patients exposed to other investigational drugs in the last 3 months.
  • Patients with known or suspected sickle cell disease,
  • Patients with splenic enlargement or an illness that results in splenic enlargement (For example, but not limited to myeloproliferative syndromes, hairy cell leukaemia, malaria, hepatic cirrhosis…),
  • Patients with an ongoing history of alcohol abuse,
  • Patients with a known or suspected history of allergy to intravenous contrast agents used for CT scans,
  • Patients that have received a chemotherapy agent within the previous 5 years (For example, but not limited to cyclophosphamide, anthracycline, methotrexate, fluorouracil…)
  • Patients that have received a therapy within the previous 5 years that interferes with hematopoiesis or circulating blood cells (For example, but not limited to Lithium, Campath….)
  • Patients that have received a cytokine within the last 6 months or are currently receiving a cytokine treatment (For example, but not limited to Erythropoietin, Granulocyte Macrophage Colony Stimulating Factor, Keratinocyte Growth Factor, Kit Ligand…)

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00809549

Canada, Ontario
The Ottawa Hospital
Ottawa, Ontario, Canada, K1Y 4E9
Sunnybrook Health Sciences Centre
Toronto, Ontario, Canada, M4N 3M5
Sponsors and Collaborators
Ottawa Hospital Research Institute
Principal Investigator: Michael Sharma, MD The Ottawa Hospital

Responsible Party: Ottawa Hospital Research Institute Identifier: NCT00809549     History of Changes
Other Study ID Numbers: 2006076-01H
First Posted: December 17, 2008    Key Record Dates
Last Update Posted: July 13, 2012
Last Verified: July 2012

Keywords provided by Ottawa Hospital Research Institute:

Additional relevant MeSH terms:
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Pathologic Processes
Adjuvants, Immunologic
Immunologic Factors
Physiological Effects of Drugs