Healthy donors needed to boost Infection-Fighting cells for vulnerable patients

NCT ID NCT01553214

First seen Jun 27, 2026 · Last updated Aug 07, 2026 · Updated 5 times

Summary

This study aims to improve the collection of granulocytes (a type of white blood cell) from healthy volunteers. Donors receive filgrastim and dexamethasone to move these cells into the bloodstream, then donate via apheresis. Up to 1,000 donors aged 18-75 can donate up to 12 times per year. The goal is to build a reliable donor registry to meet patient needs at the NIH Clinical Center.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
filgrastim and dexamethasone
What this could lead to
If successful, this could create a reliable donor program to provide granulocyte transfusions for patients with weakened immune systems, helping them fight infections.
What could go wrong
This is a Phase 4 study focused on donor feasibility, not treatment outcomes. Long-term effects of repeated filgrastim and dexamethasone in donors are still being monitored.

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Conditions

The condition(s) this trial relates to.

Infections

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States