Vaxcyte soars on positive data from Phase I/II study of VAX-24
US vaccine developer Vaxcyte (Nasdaq: PCVX) roared up 79% to $20.58 in pre-market trading today, as the company revealed encouraging early-stage results with its investigational pneumococcal vaccine.
Top-line results from the Phase I/II clinical proof-of-concept study evaluating the safety, tolerability and immunogenicity of VAX-24, the company’s investigational 24-valent pneumococcal conjugate vaccine (PCV), in healthy adults aged 18-64 showed the vaccine met the primary safety and tolerability objectives, demonstrating a safety profile similar to Prevnar 20 (PCV20) for all doses studied.
California-based Vaxcyte claims that VAX-24 is among the broadest spectrum PCVs in development and one of the most complex biologics ever developed. The 24 serotypes included in VAX-24 cover a significant portion of the IPD currently in circulation and are associated with high case-fatality rates, antibiotic resistance and meningitis.
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