ScholarWorks@성균관대학교

초록

Background: Epidermal growth factor receptor (EGFR) exon 20 insertions (Ex20ins) are the third most common type of EGFR mutation, occurring in up to 12% of EGFR-mutated non-small cell lung cancers (NSCLC). Ex20ins-mutated NSCLC can be resistant to most approved tyrosine kinase inhibitors (TKIs). The Phase III PAPILLON trial (NCT04538664) demonstrated that amivantamab plus chemotherapy significantly improves progression-free survival (PFS) compared to chemotherapy alone, leading to its approval as a first-line treatment for patients with Ex20ins NSCLC. PAPILLON further evaluated patient-reported outcomes (PROs) and time to symptomatic progression (TTSP). Methods: The open-label, multicenter trial randomized 308 treatment-naïve patients with advanced or metastatic NSCLC harboring Ex20ins to receive either amivantamab plus carboplatin-pemetrexed (n = 154) or chemotherapy alone (n = 154). TTSP was defined as the time to onset or worsening of lung cancer-related symptoms necessitating treatment change or clinical intervention, or death. PROs were assessed using the PROMIS PF8c and EORTC QLQ-C30. Results: At 12 months, 77 % of patients in the amivantamab-chemotherapy arm remained free of symptomatic progression versus 60 % in the chemotherapy arm (HR, 0.67; 95 % CI, 0.46–0.98; p = 0.04). Physical functioning and global health status PROs were maintained in both arms, with a higher proportion of patients treated in the amivantamab-chemotherapy arm reporting stable or improved quality of life at 6 and 12 months. Conclusions: Amivantamab plus chemotherapy significantly delays symptomatic progression without compromising health-related quality of life, reinforcing its role as a first-line treatment for Ex20ins-mutated NSCLC.

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