ABSTRACT Introduction A tyrosine-kinase inhibitor (TKI) is indicated as first-line treatment for patients with non-small-cell lung cancer (NSCLC) harboring an epidermal growth-factor – receptor (EGFR) mutation. Chemotherapy (ChT) given in combination with an EGFR-TKI in this setting is of interest. Methods We conducted a meta-analysis of phase III randomized trials comparing EGFR-TKI + ChT vs. EGFR-TKI alone as first-line therapy for advanced NSCLC harboring an activating EGFR mutation. Results Three studies evaluated gefitinib + ChT (NEJ009, GAP-Brain and Noronha et al.) and another evaluated osimertinib + ChT (FLAURA-2). Those four eligible studies included 1413 patients with non-squamous NSCLCs, 826 (58%) with an exon-19 deletion (ex19del) and 541 (38%) with EGFR L858R . The EGFR-TKI + ChT combination was significantly associated with prolonged PFS (hazard ratio [HR]: 0.52 [95% confidence interval (CI): 0.45–0.59]; p < 0.0001) and OS (HR: 0.69 [0.52–0.93]; p = 0.01). PFS was particularly improved for patients with brain metastases (HR: 0.41[0.33–0.51]; p < 0.00001). Conclusions For patients with untreated, advanced, EGFR-mutated NSCLCs, the EGFR-TKI + ChT combination, compared to EGFR-TKI alone, was associated with significantly prolonged PFS and OS. However, further studies are needed to identify which patients will benefit the most from the combination. Registration PROSPERO CRD42024508055
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