Scientists probe immune system to unlock COVID-19 mysteries
NCT ID NCT04327570
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study aims to understand why some people get very sick from COVID-19 while others do not. Researchers will analyze blood samples and genetic information from 100 hospitalized adults with confirmed COVID-19. The goal is to identify immune system patterns and genetic factors linked to severe illness, which could guide future treatments.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2020
- Expected to finish
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Mar 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
All patients (\>18 years old) that are admitted to UZ Leuven from March 2020 until September 2026 with PCR-confirmed and/or CT-confirmed SARS-CoV-2 disease are eligible for inclusion.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients \>/= 18 years old AND * Hospitalised with PCR-confirmed and/or CT-confirmed SARS-CoV-2 disease Exclusion Criteria: * Age \< 18 years old * No informed consent
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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UZ Leuven
RECRUITINGLeuven, 3000, Belgium
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Massive COVID-19 biobank aims to unlock secrets of severe disease
- Real-World data on CPAP for COVID-19 respiratory failure
- Could a simple gas shield healthcare workers from COVID-19?