Top-line results further validate potential of Vaxcyte’s VAX-31

3 September 2024

California, USA-based vaccine developer Vaxcyte (Nasdaq: PCVX) saw its shares leap almost 33% to $107.12 in pre-market activity as it revealed very impressive early-stage trial results.

Vaxcyte announced positive top-line results from the Phase I/II study evaluating the safety, tolerability and immunogenicity of VAX-31, the company’s 31-valent pneumococcal conjugate vaccine (PCV) candidate designed to prevent invasive pneumococcal disease (IPD), in 1,015 healthy adults aged 50 and older.

Based on the strength of the results from this study, the company said it has selected VAX-31 to advance to an adult Phase III program.

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