Scientists launch Long-Term study to unravel mysterious immune condition
NCT ID NCT00867269
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study follows 950 people with idiopathic CD4+ lymphocytopenia (ICL), a rare condition where low CD4+ white blood cells raise infection risk. Researchers will track participants for up to 10 years, collecting medical history, blood samples, and infection data. The goal is to understand how ICL progresses and what causes it, without testing any new treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this study could reveal genetic or immune factors behind ICL, pointing toward future treatments.
What could go wrong
This is an observational study, not testing a treatment. It may not lead to direct therapies, and results depend on long-term follow-up.
Disclaimer
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This is a summary of
the original study
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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.
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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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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National Institutes of Health Clinical Center
RECRUITINGBethesda, Maryland, 20892, United States