Scientists hunt for genes behind rare COVID-19 vaccine reactions.
NCT ID NCT05212792
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study is looking for genetic clues that might explain why a very small number of people develop rare side effects like Guillain-Barré syndrome, blood clots with low platelets, or heart inflammation after a COVID-19 vaccine. Researchers will compare the DNA of people who had these reactions with those who did not. The goal is not to test a new treatment, but to better understand who might be at higher risk.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this could help identify people at higher risk for rare vaccine side effects, leading to safer vaccination strategies.
- What could go wrong
- This is an observational study, not a treatment trial. It may not find clear genetic links, and results may take years to influence practice.
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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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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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British Columbia Children's Hospital Research Institute
RECRUITINGVancouver, British Columbia, V5Z 4H4, Canada
Contact
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