G-CSF for Granulocyte Donation

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: NCT00001842
Recruitment Status : Completed
First Posted : November 4, 1999
Last Update Posted : March 4, 2008
Information provided by:
National Institutes of Health Clinical Center (CC)

Brief Summary:

This study will examine the feasibility of giving cell growth stimulants to granulocyte donors the same day of donation rather than the day before.

People who donate granulocytes (infection-fighting white blood cells) for transfusion to patients with severe white cell deficiencies are often given a steroid called dexamethasone and a growth factor called G-CSF the day before donation. These drugs stimulate white cell production, allowing many more cells to be collected than would otherwise be possible. A single dose of G-CSF given to healthy people increases their white cells counts by four to five times the next day.

It would be preferable, however, to give G-CSF the same day of donation, if possible. Therefore, this study will measure white cell counts in healthy people at various intervals after being injected with G-CSF alone and G-CSF with dexamethasone. The study will compare the following: granulocyte counts at seven different intervals after injection of the drug or drugs; the effects of G-CSF injected through a vein or under the skin; and the effects of giving G-CSF alone or with dexamethasone.

Each participant will undergo four procedures, each four weeks apart as follows: donate a small blood sample; receive an injection of G-CSF under the skin or into a vein; and take either two dexamethasone tablets or two placebo tablets.

Small blood samples will then be drawn 1, 2, 4, 6, 8, and 24 hours after the drugs are given. Participants will answer questions about how they feel before the drugs are given and at the various intervals after taking the drugs.

Condition or disease Intervention/treatment Phase
Healthy Drug: Granulocyte colony-stimulating factor Drug: Dexamethasone Phase 1

Detailed Description:
The administration of granulocyte colony-stimulating factor (G-CSF) to increase the white blood cell count in granulocyte donors prior to donation is becoming an increasingly common practice. G-CSF is given subcutaneously to the donor on the day prior to donation, generally 12 to 24 hours before the start of apheresis. It would be advantageous to be able to give G-CSF and collect granulocytes on the same day. However, the single most important factor in optimizing granulocyte collection is the donor's pre-collection granulocyte count. Therefore, any decrease in count would result in a less cellular component. The purpose of this study is to assess granulocyte counts in healthy subjects during an 8-hour period after a single 5 microgram/kg intravenous dose of G-CSF with or without dexamethasone. Sixteen subjects will be studied. Each donor will be studied four separate times. The four mobilization protocols to be studied are G-CSF 5 micrograms/kg given intravenously, G-CSF 5 micrograms/kg subcutaneously, G-CSF 5 micrograms/kg intravenously plus dexamethasone 8 mg orally, and G-CSF 5 micrograms/kg subcutaneously plus dexamethasone 8 mg orally. The order of the route of administration will be assigned randomly. White blood cell counts, neutrophil counts and donor symptoms will be measured before G-CSF administration and at 1/2, 1, 2, 4, 6, 8 and 24 hours after administration. The neutrophil counts measured within the first 8 hours after G-CSF will be compared with counts measured 24 hours after G-CSF.

Study Type : Interventional  (Clinical Trial)
Enrollment : 16 participants
Primary Purpose: Treatment
Official Title: Kinetics of Intravenous G-CSF-Induced Granulocyte Mobilization in Healthy Apheresis Donors
Study Start Date : July 1999
Study Completion Date : June 2002

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Male and female subjects.

Must be 18 years of age or older.

Subjects must pass the health criteria for blood donors established by the American Association of Blood Banks.

No subjects who are pregnant or lactating females.

No subjects with uncontrolled hypertension, heart disease, diabetes, history of allergic reactions to G-CSF, history of allergic reactions to E. coli, abnormal hemoglobin or white blood cell counts, a malignancy, asthma, taking prednisone or using an inhalant.

No hemoglobin less than 11.0 or greater than 19.0 gm/dL

No platelet counts less than 140 x 10(9)/L or greater than 500 x 10(9)/L.

No absolute neutrophil count less than 1.5 x 10(9/)/L or greater than 10.0 x 10(9)/L.

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): NCT00001842

United States, Maryland
Warren G. Magnuson Clinical Center (CC)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institutes of Health Clinical Center (CC)

Publications: Identifier: NCT00001842     History of Changes
Other Study ID Numbers: 990141
First Posted: November 4, 1999    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: June 2002

Keywords provided by National Institutes of Health Clinical Center (CC):
Granulocyte Colony Stimulating Factor
Granulocyte Transfusion Factor
Blood Donors
Healthy Volunteer

Additional relevant MeSH terms:
Anti-Inflammatory Agents
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Gastrointestinal Agents
Hormones, Hormone Substitutes, and Hormone Antagonists
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Adjuvants, Immunologic
Immunologic Factors