Biotech Tracker
Trial resultsH1 2027a window, not a day

OPUS-2 and OPUS-3 Phase 3 data for VAX-31 in adults

Vaxcyte expects to report results from its Phase 3 study of VAX-31 for Invasive pneumococcal disease/pneumonia prevention, adults in the first half of 2027 (no exact date yet). Phase 3 is the last stage before a drug can be approved, so this result usually decides the program’s future.

Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary

DetailsClinical trial results · also called: readout / topline data
Company
Vaxcyte, Inc. PCVX
Drug
VAX-31
For
Invasive pneumococcal disease/pneumonia prevention, adults
Stage
Phase 3 · the last stage before a drug can be approved
When
H1 2027 · the company gave a window, not a day; the calendar never invents one
Source note
Q2 2026 update: OPUS-2 (flu co-administration) and OPUS-3 (previously vaccinated adults) data expected in first half of 2027; BLA submission planned thereafter.
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Vaxcyte, Inc.
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Trial resultsPCVXVaxcyteQ4 2026

Vaxcyte expects to report results from its Phase 3 study of VAX-31 for Invasive pneumococcal disease/pneumonia prevention, adults in Q4 2026 (Oct–Dec) (no exact date yet). Phase 3 is the last stage before a drug can be approved, so this result usually decides the program’s future.

More details
Entry
OPUS-1 Phase 3 pivotal topline for VAX-31 in adults · Clinical trial results (readout / topline data)
Drug
VAX-31
For
Invasive pneumococcal disease/pneumonia prevention, adults
Stage
Phase 3 · the last stage before a drug can be approved
When
Q4 2026 · the company gave a window, not a day
Source note
Q2 2026 update (Aug 5, 2026): topline safety, tolerability and immunogenicity data from OPUS-1 (4,049 participants) expected in fourth quarter of 2026.
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Plain-English summary generated from this entry’s own fields (drug, condition, stage, date). Glossary · Open this catalyst’s page