Long-term follow-up of patients with locally advanced non-small cell lung cancer receiving concurrent hypofractionated chemoradiotherapy with or without cetuximab

I Walraven, M van den Heuvel, J van Diessen, E Schaake, W Uyterlinde, Joachim Aerts, F Koppe, H Codrington, P Kunst, E Dieleman, PV de Vaart, M Verheij, J Belderbos

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Abstract

Background and purpose: Radiation dose escalation using hypofractionation might improve overall survival (OS). We investigated OS in a phase II multicenter study in locally advanced non-small cell lung cancer (LA-NSCLC) patients treated with hypofractionated concurrent chemoradiotherapy. Materials and methods: A 2-armed phase II, multi-center study (NTR2230) was performed with the aim to assess the effect of cetuximab to concurrent chemoradiotherapy in LA-NSCLC patients (stage II/IIIA/B). Arm A received high dose radiotherapy (24 x 2.75 Gy) and concurrent daily low-dose cisplatin (6 mg/m(2)). Arm B received an identical treatment regimen with additional weekly cetuximab. Kaplan-Meier survival curves and 1-, 2- and 5-year OS proportions were calculated. Results: Between February 2009 and May 2011, 102 patients were randomly allocated in two arms. Median OS was 31.5 months (range 12.8-52.3), not significantly different between arms A and B; 33.0 (range 17.0-57.0) and 30.0 (11.0-52.0) months. 1-, 2- and 5-year OS rates were 74.5%, 59.4% and 37.3%, respectively. In multivariate analyses, worse performance score, V35 of the esophagus and the existence of comorbidities were significantly (P-value < 0.05) associated with a shorter OS. Discussion: In this phase II trial, the median OS for the entire group was remarkably high; 31.5 months. Furthermore, 5-year OS was still 37.3%. Hypofractionation might contribute to improved OS in LA-NSCLC patients. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
Original languageUndefined/Unknown
Pages (from-to)442-446
Number of pages5
JournalRadiotherapy and Oncology
Volume118
Issue number3
DOIs
Publication statusPublished - 2016

Research programs

  • EMC MM-04-42-02

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