New study to reveal hidden weaknesses in vaccines for Immune-Compromised patients
NCT ID NCT06612515
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how well vaccines against respiratory viruses (like flu or COVID-19) work in people with weakened immune systems, including those with blood cancers. Researchers will measure both antibody and T cell responses after vaccination. The goal is to understand why vaccines often work less effectively in these patients and find ways to improve protection. About 1,000 adults who are either immunocompromised or have a blood cancer will participate.
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 1,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2025
- Expected to finish
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Dec 2029
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
Immunocompromised patients vaccinated against respiratory virus infections or willing to be vaccinated
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Signed informed consent form * Patients with immunosuppression either by treatment or underlying diseases * Patients who are vaccinated or willing to be vaccinated against respiratory virus infections in ac-cordance with current recommendations * Age of 18 years or older Exclusion Criteria: * Patients unwilling/ineligible for vaccination under current recommendations
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Get notified about this study
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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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University Hospital Cologne
RECRUITINGCologne, North Rhine-Westphalia, 50937, Germany
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Other studies related to the condition(s) this trial covers.
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