Subcutaneous versus intravenous amivantamab, both in combination with lazertinib, in refractory EGFR-mutated non-small cell lung cancer: Patient satisfaction and resource utilization results from the PALOMA-3 study

Abstract

Introduction: Intravenous anticancer treatments present challenges for patients and healthcare professionals (HCPs), prompting the development of subcutaneous formulations. In the phase 3 PALOMA-3 study, subcutaneous amivantamab demonstrated noninferior pharmacokinetics and response rates versus intravenous amivantamab (both with lazertinib), with substantially faster administration, a 5-fold reduction in infusion-related reactions, reduced venous thromboembolism, and numerically prolonged survival. Methods: Participants with EGFR-mutated NSCLC and progression on osimertinib and chemotherapy were randomized to subcutaneous (n = 206) or intravenous amivantamab (n = 212), plus lazertinib. Resource utilization and participant-reported treatment satisfaction were evaluated at cycle (C) 1 day (D) 1 and C3D1. Results: Time-in-chair was substantially lower for subcutaneous versus intravenous amivantamab (C1D1: median [range], 23 min or 0.4 h [0-12.0 h] vs 6.5 h [0-24.0 h]; C3D1: 35 min or 0.6 h [0-6.6 h] vs 3.4 h [0.5-9.0 h]), as were HCP time and participant time-in-room. More participants who received subcutaneous versus intravenous amivantamab reported feeling unrestricted administration, and reported gaining time for other activities (C1D1, 36 % vs 7 %; C3D1, 37 % vs 6 %). Few