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Clinical and Translational Oncology
Published in: Clinical and Translational Oncology 6/2016

01-06-2016 | Research Article

Dual inhibiting EGFR and VEGF pathways versus EGFR-TKIs alone in the treatment of advanced non-small-cell lung cancer: a meta-analysis of randomized controlled trials

Authors: T. T. Zhang, R. M. Wang, Z. Yang, G. B. Chen

Published in: Clinical and Translational Oncology | Issue 6/2016

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Abstract

Background

The strategy of dual inhibiting epidermal growth factor receptor (EGFR) and vascular endothelial growth factor (VEGF) pathways has been extensively investigated in advanced non-small-cell lung cancer (NSCLC), but the benefit-to-risk ratio of dual-targeted regimen versus EGFR-tyrosine kinase inhibitors (TKIs) alone is still unclear. We thus perform this meta-analysis to assess the efficacy and safety of this regimen versus EGFR-TKIs alone in those patients.

Methods

Databases from PubMed, Web of Science and the Cochrane Library up to March 31, 2015 were searched to identify relevant studies. Eligible studies included prospective randomized controlled trials (RCTs) evaluating dual inhibiting EGFR and VEGF pathways versus EGFR-TKIs alone in advanced NSCLC. The endpoints were overall survival (OS), progression-free survival (PFS), objective response rate (ORR) and grade 3 or 4 adverse events. Statistical analyses were conducted by using either random effects or fixed effect models according to the heterogeneity of included studies.

Results

A total of 1918 patients with advanced NSCLC from 4 RCTs were identified for the analysis. The pooled results demonstrated that dual inhibiting EGFR and VEGF pathways significantly improved the PFS (HR 0.71, 95 % CI 0.58–0.86, p < 0.001) and ORR (OR 1.54, 95 % CI 1.14–2.08, p = 0.005) in unselected NSCLC when compared to EGFR-TKIs alone, but it did not translate into OS benefit (HR 0.94, 95 % CI 0.84–1.05, p = 0.24). No evidence of publication bias was observed.

Conclusions

Our study suggests that dual inhibition of EGFR and VEGF pathways significantly improves PFS and ORR, but it does not translate into survival benefit in unselected NSCLC patients. Prospective clinical trials investigating the role of this regimen in EGFR mutation-positive NSCLC are still warranted.
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Metadata
Title
Dual inhibiting EGFR and VEGF pathways versus EGFR-TKIs alone in the treatment of advanced non-small-cell lung cancer: a meta-analysis of randomized controlled trials
Authors
T. T. Zhang
R. M. Wang
Z. Yang
G. B. Chen
Publication date
01-06-2016
Publisher
Springer Milan
Published in
Clinical and Translational Oncology / Issue 6/2016
Print ISSN: 1699-048X
Electronic ISSN: 1699-3055
DOI
https://doi.org/10.1007/s12094-015-1402-z

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