New mRNA vaccine targets brain infection in global trial

NCT ID NCT06680128

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests two new mRNA vaccines (GBP560) against Japanese encephalitis, a virus that can cause brain swelling. About 402 healthy adults will receive different doses of the vaccine or a comparison vaccine. Researchers will monitor safety and measure immune responses to find the best dose.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
mRNA vaccine (GBP560) against Japanese encephalitis
What this could lead to
If successful, this could lead to a new, more effective mRNA-based vaccine to prevent Japanese encephalitis, a serious brain infection.
What could go wrong
This is an early-phase trial (Phase 1/2) with only 402 participants. The vaccine may not produce a strong enough immune response or could have unexpected side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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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

  • New Zealand Clinical Research

    NOT_YET_RECRUITING

    Christchurch, Central City, 8011, New Zealand

  • Nucleus Network - Brisbane (Q Pharm)

    RECRUITING

    Brisbane, Australia

  • Nucleus Network - Melbourne

    RECRUITING

    Melbourne, Australia