In the phase III JCOG0301 trial, chemoradiotherapy (CRT) with daily low-dose carboplatin showed significant benefits in elderly patients with locally advanced non–small-cell lung cancer (NSCLC) compared with radiotherapy (RT) alone. However, the long-term patterns and cumulative incidences of toxicity associated with CRT and RT in elderly patients are not well elucidated. We report long-term survival data and late toxicities after a minimum follow-up of 6.4 years.
Patients and Methods
Eligible patients were older than 70 years and had unresectable stage III NSCLC. They were randomly assigned to RT or CRT. Prognosis and adverse events data were collected beyond those in the initial report. Late toxicities were defined as occurring more than 90 days after RT initiation.
From September 2003 to May 2010, 200 patients (RT arm, n = 100; CRT arm, n = 100) were enrolled. Consistent with the initial report, the CRT arm had better overall survival than the RT arm (hazard ratio, 0.743; 95% confidence interval, 0.552-0.998; 1-sided P = .0239). The proportion of Grade 3/4 late toxicities were 7.4% (heart 2.1%, lung 5.3%) in the RT arm (n = 94) and 7.5% (esophagus 1.1%, lung 6.5%) in the CRT arm (n = 93). No additional cases of late toxicity (Grade 3/4) and treatment-related death have been seen since the initial report that was published.
Long-term follow-up confirmed the survival benefits of CRT for elderly patients with locally advanced NSCLC. There was no observed increase in late toxicity with CRT compared with RT alone.
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Published online: May 04, 2018
Accepted: April 24, 2018
Received in revised form: April 10, 2018
Received: January 29, 2018
Clinical trial registration at umin.ac.jp/ctr: UMIN-CTR C000000060, and ClinicalTrials.gov: NCT00132665.
© 2018 Elsevier Inc. All rights reserved.