Abstract
e20662 Background: There are scarcy data or studies on safety and efficacy of afatinib in elderly patients. Methods: Retrospective study on patients from differents hospitals in Galicia (Spain) diagnosed of metastasic lung adenocarcinoma with EGFR positive mutation who have received first line treatment with afatinib between July 2015 and September 2018 were included. Main objectives were to asses safety, dose reductions and as well as its effects on effectiveness of the treatment in patients 70 years old or older (elderly patients) comparing with data from patients under 70 years of age. Results: 45 patients were included in our analysis (33 women, 12 men). Median age was 71.2 years (39-91) with 24 patients (53.3%) being 70 years old or older. Common adverse events grade 3/4 were mucositis and skin toxicity (28.6% in patients under 70 years and 20.8% in elderly patients) and diarrhea (9.5% and 16.7% respectively). The dose was reduced in 47.6% patients under 70 vs 75% in elderly patients. Treatment was discontinued in 14.3% patients vs 20.8% patients respectively owing to adverse events. Overall response was 76% and 62.5% respectively. Disease control rates were 90.3% (95% CI: 96.7-83.8) and 83.3% (95% CI: 98.2-68.4) respectively. Median progression free survival (PFS) was 27 months (95% CI 14.8-39.1) and overall survival was not reached. By ages, median PFS was 20 months (95% CI: 7.4-32.5) vs not reached in elderly patients although being unable to demonstrate differences in progression-free survival between both groups. Conclusions: PFS was 20 months in people under 70 years vs not reached in elderly patients. Elderly patients need more treatment interruption or dose adjustments compared with younger patients, but this does not seem to impair safety and does not compromise effectiveness either.
Published Version
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