Can a vaccine series shield CLL patients from pneumonia?
NCT ID NCT05183854
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether a two-shot pneumonia vaccine series (PCV20 and PPSV23) can help people with chronic lymphocytic leukemia (CLL) build a stronger immune defense against pneumococcal infections. About 61 adults with CLL who have not yet had treatment, or who are on a specific drug, will receive the vaccines. Researchers will measure antibody levels in the blood to see if the vaccines trigger a protective immune response.
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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
Locations
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Huntsman Cancer Institute/University of Utah
RECRUITINGSalt Lake City, Utah, 84112, United States
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