GSK's Arexvy shows promise in phase 3 trial for adults aged 50-59

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GSK's Arexvy shows promise in phase 3 trial for adults aged 50-59
Credit: © Reuters.

GSK's RSV vaccine, Arexvy, has demonstrated potential effectiveness in a phase III trial, producing similar immune responses in adults aged 50-59 as those observed in adults aged 60 and above. This finding is particularly relevant for individuals over 50 with underlying conditions who are at an increased risk of RSV disease. The promising results of the trial underscore GSK's research leadership in the area.

The phase 3 trial of Arexvy involved 1,576 subjects and was designed to demonstrate non-inferiority in the younger age group compared to those over 60. GSK’s chief scientific officer, Tony Wood, expressed confidence in Arexvy's potential to protect adults aged 50-59 at increased risk for RSV-related lower respiratory tract disease (RSV-LRTD).

Currently approved for use in over-60s, GSK is preparing FDA filings to expand Arexvy's label by next year. This move could create a separate market segment from Pfizer’s Abrysvo, another FDA-approved RSV vaccine that also functions as a maternal vaccine. Both vaccines are recommended by the Advisory Committee on Immunization Practices (ACIP) for the upcoming RSV season.

Simultaneously, Pfizer (NYSE: PFE ) is conducting a phase 3 trial of Abrysvo involving 675 subjects who are at higher risk of RSV disease due to chronic medical conditions. The competition between these two pharmaceutical giants underscores the importance of this segment in the global health market.

This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.

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