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  • Title: Accelerated radical radiotherapy for non-small cell lung cancer using two common regimens: a single-centre retrospective study of outcome.
    Author: Pemberton LS, Din OS, Fisher PM, Hatton MQ.
    Journal: Clin Oncol (R Coll Radiol); 2009 Apr; 21(3):161-7. PubMed ID: 19111452.
    Abstract:
    AIMS: A variety of radical radiotherapy regimens are in use for non-small cell lung cancer. Continuous hyperfractionated accelerated radiotherapy (CHART: 54 Gy in 36 fractions over 12 days) and accelerated hypofractionated radiotherapy using 55 Gy in 20 fractions over 4 weeks are standard fractionations in our centre. The primary aim of this retrospective study was to evaluate survival outcome seen in routine clinical practice. MATERIALS AND METHODS: All case notes and radiotherapy records of radically treated patients between 1999 and 2004 were retrospectively reviewed. Basic patient demographics, tumours, characteristics, radiotherapy and survival data were collected. RESULTS: In total, 277 patients received radical radiotherapy: 137 and 140 patients received CHART and hypofractionated radiotherapy, respectively. There were differences noted in the demographics between the two treatment schedules: median age 65 years (range 41-83) vs 73 years (range 33-87); histological confirmation rates 90% vs 76%; prior chemotherapy 34% vs 19% for CHART and hypofractionated treatment, respectively. For CHART patients, stages I, II, III and unclassified were 12, 8, 68 and 12% and the staging for the hypofractionated regimen was 54, 11, 34 and 2%, respectively. The median overall survival from the time of diagnosis was 20.4 months with a 40% 2-year survival rate. For the two fractionations the median survival was 16.6 months vs 21.4 months and 34% vs 45% of patients were alive at 2 years in the CHART and hypofractionated groups, respectively. On multivariate analysis, stage was the only factor affecting overall survival - no difference was seen according to radiotherapy regimen. CONCLUSION: This single-centre study reflects the outcome of unselected consecutively treated non-small cell lung cancer patients. Adjusting for stage, there was no significant difference in survival seen according to regimen. Encouragingly, CHART outcome shows reproducibility with the original CHART paper. Our hypofractionated outcome is similar to that previously reported, but despite this being the UK's most common regimen, 55 Gy in 20 daily fractions remains unvalidated by phase III trial data.
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