Withdrawn plasma study leaves COVID-19 pneumonia treatment question unanswered
NCT ID NCT04333251
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study aimed to test whether giving antibody-rich plasma from recovered COVID-19 patients could help hospitalized adults with pneumonia caused by the virus. The trial was withdrawn before any participants were enrolled, so no data was collected. The approach was based on the idea that donated antibodies might boost the immune response and reduce the need for oxygen or breathing support.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
convalescent plasma (antibody-rich blood plasma from recovered COVID-19 patients)
What this could lead to
If it had worked, this could have pointed toward a treatment for severe COVID-19 pneumonia using donated plasma from recovered patients.
What could go wrong
This trial was withdrawn before enrolling anyone, so no results are available. Convalescent plasma carries risks like allergic reactions or lung injury, and its effectiveness was uncertain.
Disclaimer
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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.
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.