Experimental drug INB03 tested to stop COVID-19 lung decline – trial halted early
NCT ID NCT04370236
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested a drug called INB03 in 79 high-risk COVID-19 patients to see if it could prevent their breathing from getting worse. Participants received two weekly injections of either INB03 or a placebo. The trial was terminated early, so we do not have clear results on whether the drug helped.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
INB03 (also called XPro1595 or Quellor)
What this could lead to
If it worked, this could point toward a treatment to prevent severe breathing problems in high-risk COVID-19 patients.
What could go wrong
The trial was terminated early with only 79 participants, so results are limited. It is unclear if INB03 is safe or effective for COVID-19.
Disclaimer
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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.
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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Locations
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Baptist Clinical Research Institute
Memphis, Tennessee, 38120, United States
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Baptist Memorial Hospital-DeSoto
Southard, Missouri, 38671, United States
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Jewish Hospital
Louisville, Kentucky, 40202, United States
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Memorial Hermann
Houston, Texas, 77030, United States
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Memorial Hermann Southeast
Houston, Texas, 77089, United States
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Mississippi Baptist
Kosciusko, Mississippi, 39090, United States
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NEA Baptist
Jonesboro, Arkansas, 72401, United States
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Richmond University Medical Center
Staten Island, New York, 10312, United States
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St. Bernard's
Jonesboro, Arkansas, 72401, United States