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*For <60 vs. ≥60 years old among the three groups. ALKr: Anaplastic lymphoma kinase-rearranged; BMs: brain metastases; ECOG-PS: Eastern Cooperative Oncology Group performance status; EGFR: epidermal growth factor receptor; TKI: tyrosine kinase inhibitor; RT: radiotherapy; STI: stereotactic irradiation; WBRT: whole-brain radiotherapy.
