1. Subcutaneous Versus Intravenous Amivantamab, Both in Combination With Lazertinib, in Refractory Epidermal Growth Factor Receptor-Mutated Non-Small Cell Lung Cancer: Primary Results From the Phase III PALOMA-3 Study.
- Author
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Leighl NB, Akamatsu H, Lim SM, Cheng Y, Minchom AR, Marmarelis ME, Sanborn RE, Chih-Hsin Yang J, Liu B, John T, Massutí B, Spira AI, Lee SH, Wang J, Li J, Liu C, Novello S, Kondo M, Tamiya M, Korbenfeld E, Moskovitz M, Han JY, Alexander M, Joshi R, Felip E, Voon PJ, Danchaivijitr P, Hsu PC, Silva Melo Cruz FJ, Wehler T, Greillier L, Teixeira E, Nguyen D, Sabari JK, Qin A, Kowalski D, Şendur MAN, Xie J, Ghosh D, Alhadab A, Haddish-Berhane N, Clemens PL, Lorenzini P, Verheijen RB, Gamil M, Bauml JM, Baig M, and Passaro A
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Adult, Injections, Subcutaneous, Aged, 80 and over, Mutation, Acrylamides administration & dosage, Progression-Free Survival, Administration, Intravenous, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung genetics, Carcinoma, Non-Small-Cell Lung pathology, Carcinoma, Non-Small-Cell Lung mortality, Lung Neoplasms drug therapy, Lung Neoplasms genetics, Lung Neoplasms mortality, Lung Neoplasms pathology, ErbB Receptors genetics, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Antineoplastic Combined Chemotherapy Protocols administration & dosage, Antineoplastic Combined Chemotherapy Protocols pharmacokinetics, Antineoplastic Combined Chemotherapy Protocols adverse effects
- Abstract
Purpose: Phase III studies of intravenous amivantamab demonstrated efficacy across epidermal growth factor receptor ( EGFR )-mutated advanced non-small cell lung cancer (NSCLC). A subcutaneous formulation could improve tolerability and reduce administration time while maintaining efficacy., Patients and Methods: Patients with EGFR -mutated advanced NSCLC who progressed after osimertinib and platinum-based chemotherapy were randomly assigned 1:1 to receive subcutaneous or intravenous amivantamab, both combined with lazertinib. Coprimary pharmacokinetic noninferiority end points were trough concentrations (C
trough ; on cycle-2-day-1 or cycle-4-day-1) and cycle-2 area under the curve (AUCD1-D15 ). Key secondary end points were objective response rate (ORR) and progression-free survival (PFS). Overall survival (OS) was a predefined exploratory end point., Results: Overall, 418 patients underwent random assignment (subcutaneous group, n = 206; intravenous group, n = 212). Geometric mean ratios of Ctrough for subcutaneous to intravenous amivantamab were 1.15 (90% CI, 1.04 to 1.26) at cycle-2-day-1 and 1.42 (90% CI, 1.27 to 1.61) at cycle-4-day-1; the cycle-2 AUCD1-D15 was 1.03 (90% CI, 0.98 to 1.09). ORR was 30% in the subcutaneous and 33% in the intravenous group; median PFS was 6.1 and 4.3 months, respectively. OS was significantly longer in the subcutaneous versus intravenous group (hazard ratio for death, 0.62; 95% CI, 0.42 to 0.92; nominal P = .02). Fewer patients in the subcutaneous group experienced infusion-related reactions (IRRs; 13% v 66%) and venous thromboembolism (9% v 14%) versus the intravenous group. Median administration time for the first infusion was reduced to 4.8 minutes (range, 0-18) for subcutaneous amivantamab and to 5 hours (range, 0.2-9.9) for intravenous amivantamab. During cycle-1-day-1, 85% and 52% of patients in the subcutaneous and intravenous groups, respectively, considered treatment convenient; the end-of-treatment rates were 85% and 35%, respectively., Conclusion: Subcutaneous amivantamab-lazertinib demonstrated noninferiority to intravenous amivantamab-lazertinib, offering a consistent safety profile with reduced IRRs, increased convenience, and prolonged survival.- Published
- 2024
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