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PCVX News
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Vaxcyte Expects OPUS-1 Trial Data in Q4 2023
"With the VAX-31 OPUS-1, OPUS-2 and OPUS-3 Phase 3 trials and the VAX-31 Phase 2 infant study fully enrolled, we expect a series of meaningful clinical study readouts across our adult and infant pneumococcal conjugate vaccines franchise over the next 12 months," said Grant Pickering, Chief Executive Officer and Co-Founder of Vaxcyte. "We are on track to deliver the topline data from the OPUS-1 noninferiority trial in the fourth quarter of this year. Following, we expect to announce the results of the OPUS-2 and OPUS-3 trials in the first half of 2027, which along with a manufacturing consistency study, would enable our planned Biologics License Application submission and potential U.S. commercial launch."
Vaxcyte Doses First Participant in Phase 1 Study of VAX-A1 Vaccine
Vaxcyte announced that the first participant was dosed in the Phase 1, first-in-human study evaluating VAX-A1, the company's investigational prophylactic vaccine candidate for the prevention of disease caused by Group A Streptococcus, in healthy adults aged 18 to 40 years. The company expects to announce topline data from the study in the second half of 2027.
Company Completes OPUS-3 Enrollment, Anticipates Q4 Data Release
The company said, "With the recent completion of OPUS-3 enrollment, our OPUS-1, OPUS-2 and OPUS-3 adult Phase 3 trials are now fully enrolled, and we remain on track to deliver data from these studies beginning with the expected OPUS-1 topline readout in the fourth quarter. Our OPUS Phase 3 program was designed to establish not only a best-in-class pneumococcal conjugate vaccine (PCV), but also a new standard by which other pneumococcal vaccines will be judged. Based on the unprecedented results from our VAX-31 Phase 1/2 study in adults and the advantages of our carrier-sparing platform, we designed the OPUS-1 noninferiority trial as a head-to-head comparison against both Prevnar 20 (PCV20) and Capvaxive (PCV21) with the potential to deliver a 14-34% increase in coverage against invasive pneumococcal disease (IPD) and a 19-31% increase in coverage against pneumococcal pneumonia relative to the current standard-of-care PCVs in U.S. adults. Following the anticipated OPUS-1 data in the fourth quarter, we expect to announce the results of the OPUS-2 and OPUS-3 Phase 3 trials in the first half of 2027, maintaining the timeline for our planned Biologics Application License (BLA) submission and potential U.S. commercial launch."
Vaxcyte Completes Enrollment in VAX-31 OPUS-1 Trial
Vaxcyte announced the completion of enrollment in the VAX-31 OPUS-1 Phase 3 pivotal, noninferiority trial with approximately 4,000 participants and the OPUS-2 Phase 3 trial evaluating VAX-31 concomitantly administered with a seasonal influenza vaccine in approximately 1,300 participants.
Vaxcyte Publishes Positive Results of VAX-31 Clinical Study
The company states: "Vaxcyte announced the publication of results from the positive VAX-31 adult Phase 1/2 clinical study in the journal The Lancet Infectious Diseases. The study evaluated the safety, tolerability and immunogenicity of VAX-31, the Company's next-generation 31-valent pneumococcal conjugate vaccine candidate, for the prevention of invasive pneumococcal disease and pneumonia compared to one of the current standard-of-care vaccines, Prevnar 20, in healthy adults aged 50 years and older. Based on the positive results of this Phase 1/2 study, VAX-31 is currently being evaluated in the OPUS Phase 3 adult program. The study results showed that VAX-31 was observed to be well tolerated and demonstrated a safety profile similar to PCV20 through the full six-month evaluation period at all doses studied. At all doses studied, VAX-31 demonstrated robust opsonophagocytic activity and immunoglobulin G (IgG) immune responses, with high geometric mean concentrations across all 31 serotypes. The VAX-31 High Dose, which is currently being evaluated in the OPUS Phase 3 program, met or exceeded the OPA response non-inferiority criteria for all 20 serotypes common with PCV20 and met the superiority criteria for the 11 incremental serotypes unique to VAX-31 and not in PCV20. The VAX-31 High Dose average OPA immune responses were greater for 18 of 20 serotypes compared to PCV20 (geometric mean ratio greater than 1.0), with seven of these serotypes achieving statistically higher immune responses3 compared to PCV20."
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