In-depth investigation of the immune response to COVID-19

In-depth Characterisation of the Dynamic Host Immune Response to Coronavirus SARS-CoV-2

Observational Universitaire Ziekenhuizen KU Leuven · NCT04327570

This study looks at the immune responses of hospitalized COVID-19 patients to see what makes some people get sicker than others.

Quick facts

Study typeObservational
Enrollment100 (estimated)
Ages18 Years and up
SexAll
SponsorUniversitaire Ziekenhuizen KU Leuven Academic / other
Locations1 site (Leuven)
Trial IDNCT04327570 on ClinicalTrials.gov

What this trial studies

This observational study aims to characterize the clinical and immunological features of patients hospitalized with COVID-19 at UZ Leuven. It will collect various biological samples, including blood and respiratory secretions, from patients with confirmed SARS-CoV-2 infection to identify factors that contribute to severe disease. The study will compare characteristics between patients with severe and non-severe COVID-19, as well as between COVID-19 positive and negative controls, to enhance understanding of the immune response to the virus.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who are hospitalized with confirmed SARS-CoV-2 infection.

Not a fit: Patients under 18 years old or those unable to provide informed consent will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to targeted medical interventions for patients at high risk of severe COVID-19.

How similar studies have performed: Other studies have shown success in characterizing immune responses to COVID-19, making this approach both relevant and necessary.

Eligibility criteria

Show full inclusion / exclusion criteria
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

Where this trial is running

Leuven

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Coronavirus InfectionsCOVID-19
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.