PMID- 38090314 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231213 IS - 2072-1439 (Print) IS - 2077-6624 (Electronic) IS - 2072-1439 (Linking) VI - 15 IP - 11 DP - 2023 Nov 30 TI - Osimertinib vs. afatinib as first-line treatment for patients with metastatic non-small cell lung cancer with an EGFR exon 19 deletion or exon 21 L858R mutation. PG - 6115-6125 LID - 10.21037/jtd-23-686 [doi] AB - BACKGROUND: The optimal treatment sequencing for patients with metastatic epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) remains a subject of debate. In the United States, osimertinib is the preferred EGFR tyrosine kinase inhibitor (TKI) in the first-line setting. However, small retrospective studies suggest that alternative EGFR TKI sequencing strategies may produce similar outcomes. This study aimed to compare the outcomes of patients with metastatic NSCLC harboring an EGFR exon 19 deletion or exon 21 L858R mutation treated with osimertinib vs. afatinib as first-line therapy. METHODS: This retrospective, single-institution study examined 86 patients with metastatic EGFR-mutant NSCLC treated with either afatinib (n=15) or osimertinib (n=71) in the first-line setting. The primary outcome was progression-free survival (PFS), and secondary endpoints included time on EGFR TKI, overall survival (OS), and the incidence of adverse events (AEs). RESULTS: There was no difference in the PFS (median: 27.9 vs. 29.0 months, P=0.75), OS (P=0.18), and the median time on first-line EGFR TKI (23.9 vs. 15.2 months, P=0.10) between the afatinib and osimertinib groups, respectively. The number of AEs was also similar between the two treatment groups (P=0.17). CONCLUSIONS: In this real-world retrospective study, there were no differences in PFS or OS between patients treated with afatinib or osimertinib in the first-line setting. These findings should be further investigated in larger prospective studies. CI - 2023 Journal of Thoracic Disease. All rights reserved. FAU - Gilardone, Sophia AU - Gilardone S AD - Department of Pharmacy, Hospital of the University of Pennsylvania, Philadelphia, PA, USA. FAU - Thapa, Ram AU - Thapa R AD - Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center, Tampa, FL, USA. FAU - Laborde, Jose AU - Laborde J AD - Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center, Tampa, FL, USA. FAU - Shafique, Michael AU - Shafique M AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Saltos, Andreas AU - Saltos A AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Creelan, Ben AU - Creelan B AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Tanvetyanon, Tawee AU - Tanvetyanon T AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Chiappori, Alberto AU - Chiappori A AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Simon, George AU - Simon G AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Haura, Eric B AU - Haura EB AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Gray, Jhanelle E AU - Gray JE AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. FAU - Chen, Dung-Tsa AU - Chen DT AD - Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center, Tampa, FL, USA. FAU - Melzer, Daniel AU - Melzer D AD - Department of Pharmacy, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. FAU - Pellini, Bruna AU - Pellini B AD - Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA. AD - Department of Oncologic Sciences, Morsani College of Medicine, University of South Florida, Tampa, FL, USA. LA - eng PT - Journal Article DEP - 20231108 PL - China TA - J Thorac Dis JT - Journal of thoracic disease JID - 101533916 PMC - PMC10713299 OTO - NOTNLM OT - EGFR tyrosine kinase inhibitor (EGFR TKI) OT - Epidermal growth factor receptor mutations (EGFR mutations) OT - afatinib OT - non-small cell lung cancer (NSCLC) OT - osimertinib COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://jtd.amegroups.com/article/view/10.21037/jtd-23-686/coif). B.P. has received research support to the institution from Bristol Myers Squibb, speaker honoraria from BioAscend, Merck, MJH Life Science, Play to Know AG, Grupo Pardini, GBOT, Doctaforum, Foundation Medicine, and has done consulting/advisory board work with Guidepoint, Guardant Health, Foundation Medicine, Illumina, BMS, Regeneron, AstraZeneca, and AH Merus. B.P. reports funding to the institution from the Bristol Myers Squibb Foundation/the Robert A. Winn Diversity in Clinical Trials Awards Program. D.M. has done consulting/advisory board work with Dedham Group, Precisionxtract, Pfizer, Eli Lily, and Takeda, and has received speaker honorarium from Jazz Pharmaceuticals. M.S. has done consulting/advisory board work with Jazz Pharmaceuticals and GlaxoSmithKline. M.S. reports funding from Daiichi Sankyo/Lilly and funding to the institution from Merck Serono, Vaccinex, Nektar, Amphivena, and Pfizer. A.S. served as speaker honoraria for MJH Life Science and HMP Global and has done consulting/advisory board work with Daiichi Sankyo, Eli Lilly, and Zymeworks. A.S. reports funding to the institution from Genetech, Genmab, Turning Point Therapeutics, Novartis, Eli Lily, Memgen, Mersana, BioAlta, AstraZeneca, Daiichi Sankyo. B.C. has received speaking fees from AstraZeneca, ARIAD Pharmaceuticals and Hoffmann-La Roche and consultant fees from Xilio, Achilles, ER Squibb, Hoffmann-La Roche, AstraZeneca, AbbVie, KSQ Therapeutics, GlaxoSmithKline, Gilead Sciences, Celgene. B.C. has received speaking fees from AstraZeneca plc, ARIAD Pharmaceuticals, Hoffmann-La Roche Ag, and OMNI Health Media LLC, and consultant fees from AbbVie, Achilles Therapeutics plc, AstraZeneca plc, Celgene, ER Squibb, G1 Therapeutics Inc, Gilead Sciences, GlaxoSmithKline, Hoffmann-La Roche, KSQ Therapeutics, MJH Life Sciences, Regeneron Pharmaceuticals Inc., Techspert IO Ltd., and Xilio and has received research funding from ER Squibb LLC and Iovance Biotherapeutics Inc., and has a patent applications filed US201962865697P and US202062976867P outside the submitted work. A.C. has received speaker bureau funding from Genentech, Merck, Takeda, Novartis, Boehringer Ingelheim, and Celgene and research funding from Novartis and Bristol-Myers Squibb. E.B.H. received speaker honoraria for ASCO 2022 Annual Meeting and the 35th Aspen Cancer Conference, received consulting fees from Ellipses, Kanaph Therapeutics, Inc., and ORI Capital II, Inc. E.B.H. has done data safety monitoring/advisory board work with Amgen, Jassen, RevMed, and reports grants to the institution from Revolution Medicine. J.E.G. has received research support AstraZeneca, Boehringer Ingelheim, Bristol Myers Squibb, Genetech, GI Therapeutics, Ludwig Institute of Cancer Research, Merck, Novartis, Pfizer. J.E.G. has done consulting/advisory board work with AbbVie, AstraZeneca, Axiom HC Strategies, Blueprint Medicines, Bristol Myers Squibb, Celgene Corp, Daiichi Sankyo, EMD Serono-Merck KGaA, Genentech, Inivata, Janssen Scientific Affairs, Jazz Pharmaceuticals, Loxo Oncology Inc, Merck, Novartis, OncoCyte Biotechnology Company, Sanofi Pharmaceuticals, Takeda Pharmaceuticals, Triptych Health Partners. G.S. reports funding from AstraZeneca, NovoCure, and Syneos Health, consulting fees and speaker honoraria from AstraZeneca, NovoCure, OncLive, and DAVA Oncology. G.S. has done data safety monitoring/advisory board work with AstraZeneca, NovoCure, and FLASCO. The other authors have no conflicts of interest to declare. EDAT- 2023/12/13 18:42 MHDA- 2023/12/13 18:43 PMCR- 2023/11/30 CRDT- 2023/12/13 13:07 PHST- 2023/04/25 00:00 [received] PHST- 2023/09/21 00:00 [accepted] PHST- 2023/12/13 18:43 [medline] PHST- 2023/12/13 18:42 [pubmed] PHST- 2023/12/13 13:07 [entrez] PHST- 2023/11/30 00:00 [pmc-release] AID - jtd-15-11-6115 [pii] AID - 10.21037/jtd-23-686 [doi] PST - ppublish SO - J Thorac Dis. 2023 Nov 30;15(11):6115-6125. doi: 10.21037/jtd-23-686. Epub 2023 Nov 8.