Skip to main content
Signal8

Vaxcyte Doses First Participant in Phase 1 Study Evaluating VAX-A1 for the Prevention of Disease Caused by Group A Streptococcus in Healthy Adults

$PCVXPress releaseJun 2, 2026, 4:05 PM ETRead the release

Vaxcyte has dosed the first participant in its Phase 1, first-in-human study of VAX-A1, a vaccine candidate targeting Group A Streptococcus. The randomized, double-blind, placebo-controlled study will enroll approximately 80 healthy adults in two stages, with topline data expected in the second half of 2027.

Key figures

Drug Name
VAX-A1
Phase Of Trial
Phase 1
Total participants
80
Us economic impact
$6 billion
Global annual cases
800 million
Global annual deaths
600,000
Stage 1 participants
12
Stage 2 participants
68
Topline data expected
H2 2027

AI analysis

The rest of the AI analysis, red flags and sentiment are part of Signal8 Pro.

AI-generated analysis of a public disclosure. Not investment advice; verify against the original document.