Concurrent Daily Cisplatin and High-Dose Radiation Therapy in Patients With Stage III Non-Small Cell Lung Cancer

Edith M. T. Dieleman, Apollonia L. J. Uitterhoeve, Meike W. van Hoek, Rob M. van Os, Jan Wiersma, Mia G. J. Koolen, Merel Willemijn Kolff, Caro C. E. Koning, Judit A. Adam, Hein J. Verberne, Jouke T. Annema, Coen R. N. Rasch

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Purpose: The purpose of this study was to determine survival, local and distant control, toxicity, and prognostic factors in patients with stage III non-small cell lung cancer (NSCLC) treated with concurrent chemoradiation therapy (CCRT). Methods and Materials: Consecutive patients with stage IIIA and IIIB NSCLC (N = 154) staged with 18F-fluorodeoxyglucose positron emission tomography/computed tomography were retrospectively selected (2005-2015). CCRT consisted of daily low-dose cisplatin (6 mg/m2) combined with 24 fractions of 2.75 Gy to a total dose of 66 Gy. Results: During a median follow-up period of 22 months (range, 1-92 months) the median overall survival was 36 months. The 1-, 2-, 3-, and 5-year survival rates were 79% (95% confidence interval [CI], 73%-86%), 61% (95% CI, 54%-70%), 52% (95% CI, 43%-60%), and 40% (95% CI, 31%-51%), respectively. The local relapse-free survival at 5 years was 55% (95% CI, 44%-69%). Metastasis-free survival at 5 years was 53% (95% CI, 44%-65%). The incidence of severe gastrointestinal disorders (grade 3-5) was 11%, among which grade 3 radiation esophagitis was 8.4%. The incidence of severe respiratory, thoracic, and mediastinal disorders (grade 3-5) was 8.4%, among which grade 3 radiation pneumonitis was 1.3%. Predictors of overall survival were lymph node gross tumor volume (GTV) (hazard ratio [HR], 1.007; 95% CI, 1.000-1.012) and sex (HR, 0.500; 95% CI, 0.320-0.870) in favor of women. Although lymph node GTV was a predictor of treatment toxicity (HR, 1.010; 95% CI, 1.000-1.013), tumor GTV was the predictor for distant metastasis during follow-up (HR, 1.002; 95% CI, 1.001-1.003). Conclusions: CCRT with daily low-dose cisplatin for locally advanced stage III NSCLC resulted in promising overall survival (3-year survival rate of 52% and 5-year survival rate of 40%) with low toxicity. Lymph node GTV, tumor GTV, and sex were predictors of overall survival, treatment toxicity, and distant metastasis.
Original languageEnglish
Pages (from-to)543-551
JournalInternational journal of radiation oncology, biology, physics
Issue number3
Publication statusPublished - 2018

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