Because of the detection of a KIF5B-EGFR fusion from a biopsy sample of metastatic supraclavicular LNs after disease progression, treatment with afatinib (40 mg qd) was initiated...After 2 months of afatinib treatment, CT examinations showed that partial response was achieved...In conclusion, we detected a novel KIF5B-EGFR fusion in advanced NSCLC as an indicator of a good response to afatinib therapy.