Hyperfractionated or accelerated radiotherapy in lung cancer: An individual patient data meta-analysis

Audrey Mauguen, Cécile Le Péchoux, Michele I. Saunders, Steven E. Schild, Andrew T. Turrisi, Michael Baumann, William T. Sause, David Ball, Chandra P. Belani, James A. Bonner, Aleksander Zajusz, Suzanne E. Dahlberg, Matthew Nankivell, Sumithra J. Mandrekar, Rebecca Paulus, Katarzyna Behrendt, Rainer Koch, James F. Bishop, Stanley Dische, Rodrigo ArriagadaDirk De Ruysscher, Jean Pierre Pignon

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Abstract

Purpose: In lung cancer, randomized trials assessing hyperfractionated or accelerated radiotherapy seem to yield conflicting results regarding the effects on overall (OS) or progression-free survival (PFS). The Meta-Analysis of Radiotherapy in Lung Cancer Collaborative Group decided to address the role of modified radiotherapy fractionation. Material and Methods: We performed an individual patient data meta-analysis in patients with nonmetastatic lung cancer, which included trials comparing modified radiotherapy with conventional radiotherapy. Results: In non-small-cell lung cancer (NSCLC; 10 trials, 2,000 patients), modified fractionation improved OS as compared with conventional schedules (hazard ratio [HR] = 0.88, 95% CI, 0.80 to 0.97; P = .009), resulting in an absolute benefit of 2.5% (8.3% to 10.8%) at 5 years. No evidence of heterogeneity between trials was found. There was no evidence of a benefit on PFS (HR = 0.94; 95% CI, 0.86 to 1.03; P = .19). Modified radiotherapy reduced deaths resulting from lung cancer (HR = 0.89; 95% CI, 0.81 to 0.98; P = .02), and there was a nonsignificant reduction of non-lung cancer deaths (HR = 0.87; 95% CI, 0.66 to 1.15; P = .33). In small-cell lung cancer (SCLC; two trials, 685 patients), similar results were found: OS, HR = 0.87, 95% CI, 0.74 to 1.02, P = .08; PFS, HR = 0.88, 95% CI, 0.75 to 1.03, P = .11. In both NSCLC and SCLC, the use of modified radiotherapy increased the risk of acute esophageal toxicity (odds ratio [OR] = 2.44 in NSCLC and OR = 2.41 in SCLC; P < .001) but did not have an impact on the risk of other acute toxicities. Conclusion: Patients with nonmetastatic NSCLC derived a significant OS benefit from accelerated or hyperfractionated radiotherapy; a similar but nonsignificant trend was observed for SCLC. As expected, there was increased acute esophageal toxicity.

Original languageEnglish (US)
Pages (from-to)2788-2797
Number of pages10
JournalJournal of Clinical Oncology
Volume30
Issue number22
DOIs
StatePublished - Aug 1 2012

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All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

Cite this

Mauguen, A., Le Péchoux, C., Saunders, M. I., Schild, S. E., Turrisi, A. T., Baumann, M., Sause, W. T., Ball, D., Belani, C. P., Bonner, J. A., Zajusz, A., Dahlberg, S. E., Nankivell, M., Mandrekar, S. J., Paulus, R., Behrendt, K., Koch, R., Bishop, J. F., Dische, S., ... Pignon, J. P. (2012). Hyperfractionated or accelerated radiotherapy in lung cancer: An individual patient data meta-analysis. Journal of Clinical Oncology, 30(22), 2788-2797. https://doi.org/10.1200/JCO.2012.41.6677