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J.P.H. Soares
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P3.02b - Poster Session with Presenters Present (ID 494)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Advanced NSCLC
- Presentations: 1
- Moderators:
- Coordinates: 12/07/2016, 14:30 - 15:45, Hall B (Poster Area)
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P3.02b-081 - Comparative Outcome Assessment of EGFR TKIs for the Treatment of Advanced Non-Small-Cell Lung Cancer: A Network Meta-Analysis (ID 4904)
14:30 - 14:30 | Author(s): J.P.H. Soares
- Abstract
Background:
Patients with advanced non small-cell lung cancer (NSCLC) whose tumors harbor activating mutations in the epidermal growth factor receptor (EGFR) gene, derive substantial clinical benefit from treatment with first and second-line EGFR tyrosine kinase inhibitors (EGFR-TKIs), including gefitinib, erlotinib and afatinib. However, their comparative effectiveness in this setting has not been evaluated, due to the paucity of randomized comparative clinical trials.
Methods:
We performed a comprehensive literature search in PUBMED, EMBASE, SCOPUS and ISI databases for randomized clinical trials evaluating either of the aforementioned EGFR-TKIs in first- and subsequent-lines treatment of EGFR-positive advanced NSCLC. All sensitizing mutations to EGFR-TKI inhibition were included in the current analysis. Patients with active brain metastases, with ECOG performance status of more than 2, as well as trials comparing the combination of EGFR-TKI with chemotherapy to chemotherapy alone were excluded. Comparative study outcomes included objective response rate (ORR), progression-free survival (PFS), overall survival (OS) and rate of adverse events (AE). Cochrane guidelines were used for statistical analysis.
Results:
13 randomized trials incorporating 3,853 patients were eligible for the analysis. In the first-line setting, all EGFR TKIs showed improved outcomes with respect to ORR and PFS when compared to standard platinum-doublet chemotherapy. Comparative ORR rates for gefitinib, erlotinib and afatinib in first-line were 71.5%, 70.2% and 50.1% respectively. HRs for PFS were 0.40 (95% CI: 0.31- 0.50) for gefitinib, 0.25 (0.11-0.56) for erlotinib and 0.40 (0.28-0.57) for afatinib, all three with p<0.001. Respective HRs for OS were 0.89 (0.72-1.10) for Gefitinib, 0.91 (0.76-1.13) for erlotinib and 1.05 (0.88-1.25) for afatinib. No significant diferences were detected regarding common AEs (rash, diarrhea) among the three agents. Evidence data for gefitinib were less heterogeneous than those for erlotinib and afatinib.
Conclusion:
When compared indirectly, gefitinib exhibited the more consistent results from a statistical point of view and erlotinib had the more favorable profile regarding PFS prolongation. These data challenge the current landscape of first and second generation EGFR-TKIs in EGFR mutant advanced NSCLC and especially those of the recently reported LUX-LUNG 7 trial.
