Scientists track rare immune condition to uncover its secrets

NCT ID NCT00867269

First seen Nov 01, 2025 · Last updated May 08, 2026 · Updated 31 times

Summary

This study aims to learn more about idiopathic CD4+ lymphocytopenia (ICL), a rare condition where the body has too few CD4+ immune cells, leading to infections or autoimmune problems. Researchers will follow about 950 participants for up to 10 years, collecting medical history, blood samples, and other tests. The goal is to understand how the disease progresses and what causes it, without testing any new treatments.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Study contacts

  • Contact

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

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

Conditions

Explore the condition pages connected to this study.