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G-CSF and AMD3100 to Mobilize Stem Cells in Healthy Volunteers

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: NCT00082329
Recruitment Status : Completed
First Posted : May 6, 2004
Results First Posted : May 2, 2014
Last Update Posted : May 2, 2014
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
Richard Childs, M.D., National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:

This 12-day study will test whether the combination of G-CSF (granulocyte-colony stimulating factor) and AMD3100 (Mozobil) is more efficient in mobilizing stem cells for collection than the use of G-CSF alone. Traditionally, the growth factor G-CSF has been given to stem cell donors to mobilize, or push, stem cells out of the bone marrow and into the blood circulation for collection for transplantation. Although a sufficient quantity of cells usually can be collected with G-CSF treatment, some donors do not respond well and may require multiple apheresis procedures (see below) to collect enough cells. Studies indicate that G-CSF used together with a drug called AMD3100 may be more effective in mobilizing stem cells for collection than G-CSF alone. The Food and Drug Administration has approved G-CSF for stem cell mobilization. AMD3100 is a new drug that also mobilizes stem cells in large numbers within a few hours.

Normal healthy volunteers between 18 and 60 years of age may be eligible for this study.

Condition or disease Intervention/treatment Phase
Healthy Drug: AMD 3100 (Mozobil plerixafor) Phase 2

Detailed Description:

Peripheral blood progenitor cells (PBPC) are the most popular source of hematopoetic stem cells for allogeneic transplantation because of technical ease of collection and faster engraftment. Traditionally, granulocyte-colony stimulating factor (G-CSF) has been used to procure the peripheral blood stem cell graft. Although regimens using G-CSF usually succeed in collecting adequate numbers of PBPC from healthy donors, 5%-10% of the donors will mobilize stem cells poorly and may require multiple large volume apheresis or bone marrow harvesting. AMD3100 reversibly inhibits CXC- chemokine receptor 4 (CXCR4) binding to stromal cell derived factor (SDF) - 1 and was recently discovered to be an effective agent to mobilize cluster of differentiation 34 (CD34)+ cells into the peripheral blood. In normal volunteers, administering AMD3100 after 4-5 days of G-CSF resulted in a 3-3.5 fold increase in circulating CD34 cells compared to G-CSF alone. Recent data has suggested that the combination of G-CSF and AMD3100 is superior to G-CSF alone for mobilizing hematopoietic progenitor cells in heavily pretreated patients with multiple myeloma or non-Hodgkin's lymphoma undergoing autologous hematopoietic transplantation. Combining AMD3100 with G-CSF could be an effective strategy to improve the yield of PBPC collected from allogeneic donors who mobilize poorly with G-CSF alone. However, the biological impact of AMD3100 in this context on T cells and other cellular populations contained within the allograft that mediate graft versus host disease (GVHD) and graft-versus-leukemia (GVL) effects are unknown.

We propose to collect peripheral progenitor cell (PBPC) from healthy volunteers following 5 days of G-CSF (10 mcg/kg/day) and a single dose of AMD3100 (240 mcg/kg subcutaneous given 12 hours before starting apheresis) to study the impact of combining these two mobilizing agents on the immunological properties of the mobilized cells. A single 15 liter apheresis will be conducted on day 5 following the 5th dose of G-CSF. The immunological studies conducted on these mobilized cells will be the same as our parallel study which is investigating the immune properties of PBPCs mobilized with G-CSF or AMD3100 alone. If combining AMD3100 with G-CSF has no negative impact on the immune populations involved in GVHD and graft-vs-leukemia effects, this regimen could be used for allogeneic donors who fail to mobilize sufficient peripheral blood stem cell (PBSC) using G-CSF alone.

Primary objective: To determine the cytokine polarization status of cluster of differentiation 4 (CD4+) T-cells collected by apheresis following combination of AMD3100 and G-CSF compared to G-CSF mobilization.

Primary endpoint: the ratio of Th1 [intracellular interferon (IFN-g) +] versus Th2 [intracellular interleukin (IL-4+)] T-cells in the apheresis products collected from individual donors undergoing mobilization with combination of G-CSF and AMD3100 to the ratio in apheresis product collected with G-CSF alone (ratio published in literature).

Secondary endpoints: To examine 1) the cellular content and other immune properties of mobilized cells; 2) yields of hematopoietic progenitor cells, immune cells, and other cellular subsets collected by apheresis; and the 3) safety profile of AMD3100.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 9 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Peripheral Blood Hematopoietic Progenitor Cell Mobilization Using Granulocyte Colony Stimulating Factor (G-CSF) Combined With AMD3100 Mozobil (Plerixafor) in Healthy Volunteers
Study Start Date : May 2004
Actual Primary Completion Date : October 2012
Actual Study Completion Date : October 2012

Resource links provided by the National Library of Medicine

Drug Information available for: Plerixafor

Arm Intervention/treatment
Experimental: AMD 3100 (Mozobil plerixafor)
Healthy volunteers will be administered AMD 3100 (Mozobil plerixafor) and granulocyte colony stimulating factor (G-CSF) to determine cytokine polarization status of cluster of differentiation (CD 4) T-cells collected by apheresis
Drug: AMD 3100 (Mozobil plerixafor)
Healthy volunteers will be administered AMD 3100 (Mozobil plerixafor) and granulocyte colony stimulating factor (G-CSF) to determine cytokine polarization status of cluster of differentiation (CD 4) T-cells collected by apheresis
Other Name: AMD 3100

Primary Outcome Measures :
  1. To Determine the Cytokine Polarization Status of Cluster of Differentiation 4 (CD4)+ T-cells Collected by Apheresis Following Combination of AMD3100 and G-CSF Compared to G-CSF Mobilization. [ Time Frame: Day 1 (cells are counted 24 hours after AMD3100) ]

    Healthy volunteers will be administered AMD 3100 (Mozobil plerixafor) and granulocyte colony stimulating factor (G-CSF) to determine cytokine polarization status of cluster of differentiation (CD 4) T-cells collected by apheresis

    We propose that the combination of single dose AMD 3100 and G-CSF as combined mobilizing agents will improve the peripheral blood progenitor cells mobilization as compared to G-CSF mobilization. The successful treatment responders will complete study treatment with cell mobilization and cell collection. Non-responders will have completed the study treatment and have cell mobilization without cell collection.

Secondary Outcome Measures :
  1. To Examine 1) the Cellular Content and Other Immune Properties of Mobilized Cells; 2) Yields of Hematopoietic Progenitor Cells, Immune Cells, and Other Cellular Subsets Collected by Apheresis; and 3) Safety Profile of AMD3100. [ Time Frame: Through day 7 ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Healthy volunteers greater or equal to 18 years old, less than or equal to 60 years.

Weight greater than 60 kg (132 pounds)

Normal renal function: creatinine less than 1.5 mg/dl l

Normal liver function: bilirubin less than1.5mg/dl, transaminases within normal limit

Normal blood count: white blood cell (WBC) 3000-10000/mm3, granulocytes greater than 1500/mm3, platelets greater than 150,000/mm3, hemoglobin greater than 12.5g/dl

Subject must be eligible for normal blood donation and fit to undergo apheresis procedure (antecubital veins must be adequate for peripheral access during apheresis)

Ability to comprehend the investigational nature of the study and provide informed consent

EXCLUSION CRITERIA: any of the following

Active infection or history of recurrent infection or positive test for syphilis (RPR), hepatitis B and C (HBaSAg, Anti-HCV), HIV and human T- Lymphocytic virus (HTLV-1)

History of autoimmune disease such as rheumatoid arthritis, systemic lupus erythematous

History of cancer within the past 5 years excluding basal cell or squamous cell carcinoma of the skin

History of any hematologic disorders including thromboembolic disease

History of cardiac disease such as uncontrolled hypertension, peripheral vascular disease, myocardial infarction, cardiac arrhythmias or related symptoms such as tachycardia, chest pain, shortness of breath which have required medical intervention or treatment or a Framingham coronary disease risk prediction score of greater than 10% 10 year coronary heart disease (CHD) risk

History of heavy smoking with underlying pulmonary disease

History of cerebrovascular disease, transient ischemic attack, or stroke

Diagnosis of sickle cell anemia or sickle cell trait (to be screened by hemoglobin (Hbg) electrophoresis)

Pregnant or lactating

Severe psychiatric illness: mental deficiency sufficiently severe as to make informed consent impossible.

Mobilization with G-CSF within 90 days of protocol enrollment.

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): NCT00082329

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United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
Richard Childs, M.D.
National Heart, Lung, and Blood Institute (NHLBI)
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Principal Investigator: Richard W Childs, M.D. National Heart, Lung, and Blood Institute (NHLBI)
Additional Information:
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Responsible Party: Richard Childs, M.D., NHLBI Clinical Director, National Heart, Lung, and Blood Institute (NHLBI) Identifier: NCT00082329    
Other Study ID Numbers: 040179
04-H-0179 ( Other Identifier: NIH NHLBI )
First Posted: May 6, 2004    Key Record Dates
Results First Posted: May 2, 2014
Last Update Posted: May 2, 2014
Last Verified: April 2014
Keywords provided by Richard Childs, M.D., National Heart, Lung, and Blood Institute (NHLBI):
Hematopoietic Stem Cells
T Cell Polarization
Dendritic Cells
Healthy Volunteer (HV)
Additional relevant MeSH terms:
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Plerixafor octahydrochloride
Anti-HIV Agents
Anti-Retroviral Agents
Antiviral Agents
Anti-Infective Agents