Expired Study
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Bethesda, Maryland 20892


This study will determine whether the spleen in people who donate stem cells (bone marrow cells collected from the blood) enlarges as a result of taking granulocyte colony-stimulating factor (G-CSF). Donors take this growth factor to maximize the amount of stem cells that can be collected for transplantation to patients with leukemia or other diseases. The study will also examine whether changes in the donor's white blood cell count, blood stem cell count, and blood chemistries can predict a change in spleen size. Stem cells donors take G-CSF for 5 to 6 days before donating. Besides increasing the number of stem cells and white blood cells in the bloodstream, the drug also causes some other temporary changes in blood chemistry. Many people who take G-CSF for a few days get a headache, feel an ache in their bones, or feel tired for a few days. About one-third of patients chronically treated with G-CSF to raise blood cell counts develop an enlarged spleen. It is not known if a brief 5- to 6-day course of G-CSF also affects the size of the spleen, but about 1 in 10,000 blood stem cell donors have had a spontaneous rupture of the spleen. Adults and children 18 years of age and older who are donating stem cells for relatives enrolled in clinical trials at the National Institutes of Health may participate in this study. They will donate stem cells according to the standard procedure, but will give an extra 15 milliliters (3 teaspoons) of blood both before receiving G-CSF and after donating stem cells. Donors' spleen size will be measured by ultrasound scanning of the abdomen three times: the day before receiving G-CSF, the day after donating the stem cells and 4 days after donating.

Study summary:

The administration of granulocyte-colony stimulating factor (G-CSF) leads to splenic enlargement in approximately one third of neutropenic patients who are chronically treated with this drug. Short courses, 5 to 6-days, of G-CSF are used to increase the yield of hematopoietic progenitor cells collected by apheresis from peripheral blood stem cell (PBSC) donors. G-CSF mobilized PBSC concentrates are increasingly replacing marrow as a source of hematopoietic progenitor cells for transplants involving HLA-compatible relatives. PBSC donors experience splenomegaly and rarely, spontaneous rupture of the spleen. Since splenomegaly is a risk factor for splenic rupture, it is important to determine the incidence and time course of splenic enlargement in PBSC concentrate donors. This protocol will prospectively study 40 subjects donating G-CSF mobilized PBSC for HLA compatible relatives or donating PBSC's for laboratory investigations at the Department of Transfusion Medicine in the Warren G. Magnuson Clinical Center. The subjects will be given G-CSF for 5 days and a PBSC concentrate will be collected on day 5. Ultrasound scans will be used to assess their spleen size. The scans will be performed before G-CSF administration and the day the last PBSC concentrate is collected. A third scan will be performed 10 or 11 days after the last PBSC is collected. The effects of several parameters on spleen size will be assessed including: donor age, gender, race and changes in liver function assays, white blood cell counts, platelet counts, and CD34+ cell counts.


INCLUSION CRITERIA Adults and children 18 years of age or greater will be studied. Enrolled in a primary stem cell transplant protocol that has been approved by the IRB. Potential subjects are people donating PBSC concentrates for HLA-compatible relatives as part of IRB approved protocols or donating PBSCs for laboratory investigations. EXCLUSION CRITERIA Donors who cannot remain in the Bethesda area for an additional 4 to 5 days following their donations will be excluded from the third ultrasound.

Study is Available At:

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Study Acronym:

Brief Title:

Spleen Size in Peripheral Blood Stem Cell Donors

Official Title:

Spleen Size in Peripheral Blood Stem Cell Donors

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Quick Facts

Healthy Volunteers
Oversight Has DMC
Study Is FDA Regulated
Study Is Section 801
Has Expanded Access

Study Source:

National Institutes of Health Clinical Center (CC)

Oversight Authority:

United States: Federal Government

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Study Dates

Start Date:August 2000
Completion Date:June 2004
Verification Date:June 2004
Last Changed Date:March 3, 2008
First Received Date:August 8, 2000

Study Outcomes

There are no available Study Outcomes

Study Interventions

There are no available Study Interventions

Study Arms

There are no available Study Arms

Study Agencies

Agency Class:NIH
Agency Type:Lead Sponsor
Agency Name:National Institutes of Health Clinical Center (CC)

Sample and Retention Information

There are no available Sample and Retention Information

Study References

Reference Type:Reference
Citation:Bensinger WI, Weaver CH, Appelbaum FR, Rowley S, Demirer T, Sanders J, Storb R, Buckner CD. Transplantation of allogeneic peripheral blood stem cells mobilized by recombinant human granulocyte colony-stimulating factor. Blood. 1995 Mar 15;85(6):1655-8.
Reference Type:Reference
Citation:Korbling M, Przepiorka D, Huh YO, Engel H, van Besien K, Giralt S, Andersson B, Kleine HD, Seong D, Deisseroth AB, et al. Allogeneic blood stem cell transplantation for refractory leukemia and lymphoma: potential advantage of blood over marrow allografts. Blood. 1995 Mar 15;85(6):1659-65.
Reference Type:Reference
Citation:Schmitz N, Dreger P, Suttorp M, Rohwedder EB, Haferlach T, Loffler H, Hunter A, Russell NH. Primary transplantation of allogeneic peripheral blood progenitor cells mobilized by filgrastim (granulocyte colony-stimulating factor) Blood. 1995 Mar 15;85(6):1666-72.

Data Source: ClinicalTrials.gov

Date Processed: January 21, 2020

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