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ESMO 2023 | Phase III MARIPOSA: amivantamab + lazertinib vs osimertinib in EGFR-mutated NSCLC

Byoung Chul Cho, MD, PhD, Yonsei University, Seoul, Korea, discusses the Phase III MARIPOSA (NCT04487080) trial investigating the combination of amivantamab, an EGFR-MET bispecific antibody, and lazertinib, a third-generation EGFR TKI, compared to osimertinib as a first-line treatment for EGFR-mutated locally advanced or metastatic non-small cell lung cancer (NSCLC). Among 1074 patients, amivantamab plus lazertinib demonstrated a 30% reduction in the risk of disease progression or death compared to osimertinib, with a median progression-free survival (PFS) of 23.7 months versus 16.6 months for osimertinib. The objective response rate (ORR) was 86% for amivantamab plus lazertinib versus 85% for osimertinib, and the duration of response (DoR) was longer with amivantamab plus lazertinib. Although overall survival (OS) data was interim, it showed a favorable trend for amivantamab plus lazertinib. Adverse events were generally manageable, and VTEs were more common with amivantamab plus lazertinib but mostly mild. MARIPOSA establishes amivantamab plus lazertinib as a new first-line standard of care for EGFR-mutated advanced NSCLC. This interview took place at the European Society for Medical Oncology (ESMO) 2023 Congress in Madrid, Spain.

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