RESULTS OF SECOND – LINE TREATMENT OSIMERTINIB IN NON – SMALL CELL LUNG CANCER WITH EGFR MUTATION AT BACH MAI HOSPITAL

Thị Lựu Nguyễn1,, Cẩm Phương Phạm 2
1 Hospital of Vietnam National University, Hanoi
2 Bach Mai Hospital

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Abstract

Objective: To evaluate the results of second-line osimertinib treatment in stage IV non-small cell lung cancer with EGFR mutation. Subjects and methods: A descriptive cohort study was conducted in 41 patients with EGFR mutation positive stage IV non-small cell lung cancer who failed after first- and second-generation EGFR-TKIs therapy with presence of T790M resistance mutation was treated with osimertinib at Nuclear medicine and Oncology Center Bach Mai Hospital from January 2018 to the end of February 2022 and follow up until the end of August 2022. Results: The overall response rate of osimertinib was 61%, disease control rate was 85.4%, the median progression-free survival (PFS) was 11 months, the median PFS in the group of patients with the Del 19 mutation was 11 months higher than the L858R mutant group was 6 months, difference were statistically significant, p<0.05. The most common side effects were diarrhea (41.5%), rash (39%), dry skin (26.8%), paronychia (24.4%). Most of them were mild, and no patient required a dose reduction. Conclusion: The osimertinib regimen is highly effective and safe in the second-line treatment of stage IV non-small cell lung cancer.

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References

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