• Belrestotug, an anti-TIGIT antibody from GSK and iTeos, demonstrated a higher objective response rate (ORR) when combined with GSK's Jemperli (dostarlimab) in PD-L1-positive NSCLC patients.
• The GALAXIES Lung-02 phase 2 trial showed a dose-response relationship with belrestotug, with the highest dose achieving a 76.7% ORR compared to 28.1% for Jemperli alone.
• While side effects were generally manageable, the combination therapy had higher treatment discontinuation rates and some treatment-related deaths, warranting careful safety monitoring.
• A phase 3 trial, GALAXIES-Lung-301, is planned using the 400mg dose of belrestotug in combination with Jemperli, comparing it to Keytruda plus placebo in first-line NSCLC patients.