marginally significantp = 0.06
For patients with brain metastasis at baseline, the combination therapy achieved a significant better PFS than the monotherapy (HR = 0.60, 95% CI 0.39–0.90; p = 0.01), and a better OS with the difference marginally significant (HR = 0.69, 95% CI 0.46–1.02; p = 0.06).