Abstract
To compare the survival outcomes of first-line treatment regimens for advanced epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) patients with stable brain metastases. We conducted a systematic review of available data from randomized controlled trials (RCTs) of first-line treatment regimens of NSCLC patients with stable brain metastases. Progression free survival (PFS) and overall survival (OS) were extracted and analysed from the RCT subgroups. A network meta-analysis was constructed using the Bayesian statistical model to synthesize the survival outcomes of all the treatments. The analysis included 6 eligible RCT subgroups with 417 patients and 7 treatment regimens osimertinib, afatinib, first-generation EGFR-TKI (gefitinib or erlotinib), erlotinib + bevacizumab, gefitinib + pemetrexed + carboplatin, gemcitabine + cisplatin, and pemetrexed + cisplatin. Of these seven treatment regimens, gefitinib + pemetrexed + carboplatin had the highest potential for favorable PFS and OS, followed by osimertinib, in the treatment of advanced EGFR-mutant NSCLC patients with stable brain metastases. None of the results met the predetermined statistical significance of P<0.05. The regimens of "Gefitinib + pemetrexed + carboplatin" and "Osimertinib" were associated with the most favorable PFS and OS compared to the other therapies in advanced EGFR-mutant NSCLC patients with stable brain metastases, although the difference between these regimens and the others was not statistically significantly different.
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