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- Kazuyuki Tsujino, Takayasu Kurata, Satomi Yamamoto, Tomoya Kawaguchi, Akihito Kubo, Shunichi Isa, Yoshikazu Hasegawa, Sai-Hong Ignatius Ou, Minoru Takada, and Masahiko Ando.
- Department of Respiratory Medicine, Kinki Central Hospital, Itami, Hyogo, Japan.
- J Thorac Oncol. 2013 Sep 1; 8 (9): 1181-9.
IntroductionThe purpose of this study was to evaluate whether consolidation chemotherapy (CCT) after concurrent chemo-radiotherapy is beneficial for patients with locally advanced non-small-cell lung cancer (LA-NSCLC).MethodsWe systematically searched PubMed for phase II/III trials published before December 31, 2011, examining survival of LA-NSCLC treated with concurrent chemo-radiotherapy. Median overall survival and other study characteristics were collected from each study and pooled. We extracted log-transformed hazards and standard errors under the assumption that survival follows an exponential distribution, and computed a pooled median overall survival and a 95% confidence interval (CI) using random-effects model. Collected trial arms were categorized as having CCT or not having it, CCT+ and CCT-, respectively.ResultsForty-one studies were identified including seven phase III studies and 34 phase II studies with 45 arms (CCT+: 25; CCT-: 20). Clinical data were comparable for clinical stage, performance status, cancer histology, sex, and median age between the two groups. There was no statistical difference in pooled mOS between CCT+ (19.0 month; 95% CI, 17.3-21.0) and CCT- (17.9 month; 95% CI, 16.1-19.9). Predicted hazard ratio of CCT+ to CCT- was 0.94 (95% CI, 0.81-1.09; p = 0.40). There were no differences between the two groups with regard to grade 3-5 toxicities in pneumonitis, esophagitis, and neutropenia. These models estimated that addition of CCT could not lead to significant survival prolongation or risk reduction in death for LA-NSCLC patients.ConclusionThe pooled analysis based on a publication basis failed to provide evidence that CCT yields significant survival benefit for LA-NSCLC.
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