What is the efficacy of stereotactic body radiotherapy (SBRT) for the treatment of non–small cell lung cancer (NSCLC)?

Updated: Jun 05, 2020
  • Author: Winston W Tan, MD, FACP; Chief Editor: Nagla Abdel Karim, MD, PhD  more...
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Answer

In a phase II study by Timmerman et al, use of SBRT in patients with inoperable NSCLC resulted in a 3-year survival rate of 55.8% (versus the 20%-35% seen with current management), high rates of local tumor control, and moderate treatment-related morbidity. [99] A large Japanese retrospective analysis showed that patients treated with SBRT at doses higher than 100 Gy had a local recurrence rate of 8.4%, and a 5-year overall survival of 70.8%. [100] Randomized studies of SBRT are being conducted by the Radiation Therapy Oncology Group (RTOG).

SBRT was associated with shorter overall survival but similar recurrence rates and cause-specific mortality in a nonrandomized study by Grills et al. The study compared outcomes in patients with stage T1-2N0M0 NSCLC who were ineligible for lobectomy and thus underwent either wedge resection or, if deemed medically inoperable, SBRT. [101]


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