TREATMENT RESULTS OF ADVANCED NON SMALL-CELL LUNG CANCER HARBOURING UNCOMMON EGFR MUTATIONS BY FIRST AND SECOND GENERATION TYROSINE KINASE INHIBITORS

Nguyễn Thị Thái Hòa

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Abstract

Rare mutations and double mutations account for less than 10% of lung cancers with EGFR mutations, often with a worse response to 1st generation TKIs than common mutations. Objective: To review some pathological features of advanced non-small cell lung cancer with rare EGFR mutation and to evaluate the response rate of this group of patients to 1st and 2nd generation TKIs. Subjects and methods: Retrospective description of 29 patients with stage IV non-small cell lung cancer with rare or double EGFR mutation Results: The rare mutation sites in the study were: G719X mutation, S768I mutation, L861Q mutation. Double mutations 7/29 patients (24%). The response rate and disease control with 1st generation TKIs was 41.7% and 66.7%; with 2nd generation TKIs 82.3% and 88.2%. Conclusion: 1st and 2nd generation TKIs are effective in rare and double EGFR mutations, and 2nd generation TKIs have a higher rate of disease response and control than 1st generation TKIs

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References

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