The Influence of the Evolution of First-Line Chemotherapy on Steadily Improving Survival in Advanced Non-Small-Cell Lung Cancer Clinical Trials
Over the past three decades, survival in advanced non–small-cell lung cancer (NSCLC) clinical trials has doubled with an increase in 1-year survival from 25% to 50 to 55%. This has been mainly attributed to improvements in systemic therapy. Although modern first-line chemotherapy regimens have more...
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Veröffentlicht in: | Journal of thoracic oncology 2015-11, Vol.10 (11), p.1523-1531 |
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Sprache: | eng |
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Zusammenfassung: | Over the past three decades, survival in advanced non–small-cell lung cancer (NSCLC) clinical trials has doubled with an increase in 1-year survival from 25% to 50 to 55%. This has been mainly attributed to improvements in systemic therapy. Although modern first-line chemotherapy regimens have more favorable toxicity profiles, a statistically significant improvement in overall survival has not been demonstrated in existing meta-analyses of second-generation versus third-generation combinations. Moreover, pivotal trials demonstrating statistically significant survival superiority of third-generation regimens are consistently not reproducible even for nonsquamous populations using pemetrexed–platinum combinations. As enhancement in the efficacy of first-line systemic therapy in patients without identifiable driver mutations is questionable, other factors are discussed that explain the doubling of 1-year survival reported in clinical trials. These factors include second-line or third-line therapy, maintenance chemotherapy, performance status selection, stage migration, sex migration, improved treatment of brain metastases, and better palliative care. |
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ISSN: | 1556-0864 1556-1380 |
DOI: | 10.1097/JTO.0000000000000667 |