Scientists seek clues on white blood cells in allergies and parasite infections

NCT ID NCT00001406

First seen Sep 30, 2025 · Last updated May 22, 2026 · Updated 29 times

Summary

This study aims to understand how eosinophils (a type of white blood cell) become active in conditions like allergies, asthma, and parasitic worm infections. Researchers will observe up to 800 people aged 1 to 100 with high eosinophil levels. No experimental treatments are offered; participants receive standard care and may donate extra blood or undergo tests like bone marrow biopsy for research purposes.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

Conditions

Explore the condition pages connected to this study.