Italian Cohort of the Nivolumab EAP in Squamous NSCLC: Efficacy and Safety in Patients With CNS Metastases

Background/Aim: Brain metastases are an additional challenge in patients with non-small-cell lung cancer (NSCLC) because most chemotherapy agents cannot cross the blood-brain barrier. Nivolumab has demonstrated efficacy in patients with advanced squamous NSCLC, but because patients with central nervous system (CNS) metastases are typically excluded from registration trials, 'field-practice' data are needed. Patients and Methods: Patients in the Italian cohort of the Expanded Access Program (EAP) who had CNS metastases at baseline were analyzed. Results: Thirty-seven patients with CNS metastases received a median of six doses of nivolumab. Three patients (8%) had grade 3-4 adverse events and one patient discontinued due to an adverse event. The objective response rate was 19%. Median overall survival was 5.8 (95% confidence interval=1.9-9.8) months and median progression-free survival was 4.9 (95% confidence interval=2.7-7.1) months. Conclusion: The safety and efficacy of nivolumab in patients with CNS metastases appear to be similar to those seen in the overall EAP cohort in Italy.