Collection of Bone Marrow From Donors Treated With or Without Filgrastim

PRIMARY OBJECTIVES:

I. To evaluate short- and long-term toxicities in bone marrow donors treated with vs without
filgrastim before harvest.

II. To compare 10-year mortality and cancer in donors treated with vs without filgrastim.

SECONDARY OBJECTIVES:

I. To correlate the incidence of acute and chronic graft-vs-host disease in the marrow
recipients enrolled on COG-ASCT0631 with four parameters assessed in the bone marrow
harvests: absolute T-cell numbers, Th1 vs Th2 profile of T-cells, dendritic cell
populations, and T-regulatory cell content.

OUTLINE: Donors are randomized to 1 of 2 treatment arms.

ARM I (unstimulated harvest): Donors undergo conventional (i.e., unstimulated) bone marrow
harvest on day 0.

ARM II (stimulated harvest): Donors receive filgrastim subcutaneously on days -4 through 0.
Donors then undergo bone marrow harvest on day 0.

After completion of study treatment, donors are followed up at 1, 6, and 12 months and then
annually for up to 10 years.

Inclusion Criteria:

- Appropriately human leukocyte antigen (HLA)-matched (HLA, A, B, DRB1 identical or
antigen mismatched [i.e., 5/6 or 6/6 antigens matched]) sibling of the bone marrow
recipient enrolled on COG-ASCT0631

- Adequate size relative to the recipient (i.e., harvesting the maximum of 20 cc/kg
from the donor would result in a bone marrow graft that will provide an adequate cell
and volume dose to the recipient, in the opinion of the treating physician)

- Enrolled on the COG Umbrella Long-Term Follow-Up Study COG-ALTE05N1

- Not pregnant or nursing

- No human immunodeficiency virus (HIV) positivity

- No sickle cell trait or sickle cell anemia/disease

- Not at an increased risk from bone marrow donation after filgrastim administration
due to a pre-existing medical condition, as determined by an independent physician
separate from the research team

- None of the following:

- Active infection, especially pulmonary

- Splenomegaly or a history of splenic injury

- Active or recent pulmonary disease (i.e., pneumonia within the past 4 weeks)

- A condition that would make the donor unsuitable to donate, as determined by an
independent physician separate from the research team

- No autoimmune disease