Factors Affecting 2-Year Survival in Patients With Non–Small Cell Lung Cancer Brain Metastases: Evidence from Indonesia’s National Cancer Center, Jakarta, Indonesia

Background: Brain metastases are a common complication in a wide range of cancers but are ubiquitous among patients with lung cancer. Limited data are available on the survival of patients with lung cancer and brain metastases in Indonesia. In this study, we aimed to identify the factors that might contribute to and predict survival in patients with non–small cell lung cancer (NSCLC) that resulted in brain metastases. Methods: This retrospective study on patients with NSCLC and brain metastases was conducted using data available from the medical records of the Dharmais National Cancer Hospital, Jakarta, Indonesia. The study outcome was survival time, which was associated with sex, age, smoking status, body mass index, number of brain metastases, tumor location, systemic therapy, and other therapies. Descriptive statistics, median survival, Kaplan-Meier graphs, and Cox regression were analyzed using SPSS version 27. Results: We included 111 patients with NSCLC and brain metastases in this study. The median patient age was 58 years. Long survivorship was observed among women (median: 95.4 weeks; P