全脑放疗(whole brain radiotherapy, WBRT)在表皮生长因子受体(epidermal growth factor receptor, EGFR)突变的非小细胞肺癌(non-small cell lung cancer, NSCLC)脑转移患者治疗中何时应用尚无高级别的循证医学证据。本研究旨在探讨WBRT的参与时间对携有EGFR突变的NSCLC脑转移患者生存的影响。. The gene discussed is EGFR; the disease is non-small cell lung carcinoma.