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Slotman, Ben J, MD; van Tinteren, Harm, PhD; Praag, John O, MD; Knegjens, Joost L, MD; El Sharouni, Sherif Y, MD; Hatton, Matthew, FRCR; Keijser, Astrid, MSc; Faivre-Finn, Corinne, PhD; Senan, Suresh, FRCR
The Lancet (British edition), 01/2015, Letnik: 385, Številka: 9962Journal Article
Summary Background Most patients with extensive stage small-cell lung cancer (ES-SCLC) who undergo chemotherapy, and prophylactic cranial irradiation, have persistent intrathoracic disease. We assessed thoracic radiotherapy for treatment of this patient group. Methods We did this phase 3 randomised controlled trial at 42 hospitals: 16 in Netherlands, 22 in the UK, three in Norway, and one in Belgium. We enrolled patients with WHO performance score 0–2 and confirmed ES-SCLC who responded to chemotherapy. They were randomly assigned (1:1) to receive either thoracic radiotherapy (30 Gy in ten fractions) or no thoracic radiotherapy. All underwent prophylactic cranial irradiation. The primary endpoint was overall survival at 1 year in the intention-to-treat population. Secondary endpoints included progression-free survival. This study is registered with the Nederlands Trial Register, number NTR1527. Findings We randomly assigned 498 patients between Feb 18, 2009, and Dec 21, 2012. Three withdrew informed consent, leaving 247 patients in the thoracic radiotherapy group and 248 in the control group. Mean interval between diagnosis and randomisation was 17 weeks. Median follow-up was 24 months. Overall survival at 1 year was not significantly different between groups: 33% (95% CI 27–39) for the thoracic radiotherapy group versus 28% (95% CI 22–34) for the control group (hazard ratio HR 0·84, 95% CI 0·69–1·01; p=0·066). However, in a secondary analysis, 2-year overall survival was 13% (95% CI 9–19) versus 3% (95% CI 2–8; p=0·004). Progression was less likely in the thoracic radiotherapy group than in the control group (HR 0·73, 95% CI 0·61–0·87; p=0·001). At 6 months, progression-free survival was 24% (95% CI 19–30) versus 7% (95% CI 4–11; p=0·001). We recorded no severe toxic effects. The most common grade 3 or higher toxic effects were fatigue (11 vs 9) and dyspnoea (three vs four). Interpretation Thoracic radiotherapy in addition to prophylactic cranial irradiation should be considered for all patients with ES-SCLC who respond to chemotherapy. Funding Dutch Cancer Society (CKTO), Dutch Lung Cancer Research Group, Cancer Research UK, Manchester Academic Health Science Centre Trials Coordination Unit, and the UK National Cancer Research Network.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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