PMID- 37402411 OWN - NLM STAT- MEDLINE DCOM- 20240117 LR - 20240118 IS - 2005-9256 (Electronic) IS - 1598-2998 (Print) IS - 1598-2998 (Linking) VI - 56 IP - 1 DP - 2024 Jan TI - Lazertinib versus Gefitinib as First-Line Treatment for EGFR-mutated Locally Advanced or Metastatic NSCLC: LASER301 Korean Subset. PG - 48-60 LID - 10.4143/crt.2023.453 [doi] AB - PURPOSE: This subgroup analysis of the Korean subset of patients in the phase 3 LASER301 trial evaluated the efficacy and safety of lazertinib versus gefitinib as first-line therapy for epidermal growth factor receptor mutated (EGFRm) non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Patients with locally advanced or metastatic EGFRm NSCLC were randomized 1:1 to lazertinib (240 mg/day) or gefitinib (250 mg/day). The primary endpoint was investigator-assessed progression-free survival (PFS). RESULTS: In total, 172 Korean patients were enrolled (lazertinib, n=87; gefitinib, n=85). Baseline characteristics were balanced between the treatment groups. One-third of patients had brain metastases (BM) at baseline. Median PFS was 20.8 months (95% confidence interval [CI], 16.7 to 26.1) for lazertinib and 9.6 months (95% CI, 8.2 to 12.3) for gefitinib (hazard ratio [HR], 0.41; 95% CI, 0.28 to 0.60). This was supported by PFS analysis based on blinded independent central review. Significant PFS benefit with lazertinib was consistently observed across predefined subgroups, including patients with BM (HR, 0.28; 95% CI, 0.15 to 0.53) and those with L858R mutations (HR, 0.36; 95% CI, 0.20 to 0.63). Lazertinib safety data were consistent with its previously reported safety profile. Common adverse events (AEs) in both groups included rash, pruritus, and diarrhoea. Numerically fewer severe AEs and severe treatment-related AEs occurred with lazertinib than gefitinib. CONCLUSION: Consistent with results for the overall LASER301 population, this analysis showed significant PFS benefit with lazertinib versus gefitinib with comparable safety in Korean patients with untreated EGFRm NSCLC, supporting lazertinib as a new potential treatment option for this patient population. FAU - Lee, Ki Hyeong AU - Lee KH AD - Division of Medical Oncology, Department of Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea. FAU - Cho, Byoung Chul AU - Cho BC AD - Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea. FAU - Ahn, Myung-Ju AU - Ahn MJ AD - Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea. FAU - Lee, Yun-Gyoo AU - Lee YG AD - Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. FAU - Lee, Youngjoo AU - Lee Y AD - Center for Lung Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea. FAU - Lee, Jong-Seok AU - Lee JS AD - Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea. FAU - Kim, Joo-Hang AU - Kim JH AD - CHA Bundang Medical Center, CHA University, Seongnam, Korea. FAU - Min, Young Joo AU - Min YJ AD - Division of Hematology and Oncology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea. FAU - Lee, Gyeong-Won AU - Lee GW AD - Division of Hemato-Oncology, Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University, College of Medicine, Jinju, Korea. FAU - Lee, Sung Sook AU - Lee SS AD - Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea. FAU - Lee, Kyung-Hee AU - Lee KH AD - Division of Hematology/Oncology, Department of Internal Medicine, Yeungnam University Medical Center, Daegu, Korea. FAU - Ko, Yoon Ho AU - Ko YH AD - Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Shim, Byoung Yong AU - Shim BY AD - Division of Medical Oncology, Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea. FAU - Kim, Sang-We AU - Kim SW AD - Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. FAU - Shin, Sang Won AU - Shin SW AD - Division of Oncology/Hematology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea. FAU - Choi, Jin-Hyuk AU - Choi JH AD - Department of Hematology-Oncology, Ajou University School of Medicine, Suwon, Korea. FAU - Kim, Dong-Wan AU - Kim DW AD - Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea. FAU - Cho, Eun Kyung AU - Cho EK AD - Division of Oncology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea. FAU - Park, Keon Uk AU - Park KU AD - Division of Hematology/Oncology, Department of Internal Medicine, Keimyung University Dongsan Hospital, Daegu, Korea. FAU - Kim, Jin-Soo AU - Kim JS AD - Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea. FAU - Chun, Sang Hoon AU - Chun SH AD - Division of Medical Oncology, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Wang, Jangyoung AU - Wang J AD - Yuhan Corporation, Seoul, Korea. FAU - Choi, SeokYoung AU - Choi S AD - Yuhan Corporation, Seoul, Korea. FAU - Kang, Jin Hyoung AU - Kang JH AD - Division of Medical Oncology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. LA - eng GR - Yuhan Corporation/ GR - Tech Observer Asia Pacific Pte Ltd./ PT - Journal Article PT - Randomized Controlled Trial DEP - 20230627 PL - Korea (South) TA - Cancer Res Treat JT - Cancer research and treatment JID - 101155137 RN - S65743JHBS (Gefitinib) RN - 4A2Y23XK11 (lazertinib) RN - 0 (Quinazolines) RN - EC 2.7.10.1 (ErbB Receptors) RN - 0 (Protein Kinase Inhibitors) RN - EC 2.7.10.1 (EGFR protein, human) RN - 0 (Morpholines) RN - 0 (Pyrazoles) RN - 0 (Pyrimidines) SB - IM MH - Humans MH - *Carcinoma, Non-Small-Cell Lung/drug therapy/genetics MH - Gefitinib/therapeutic use MH - *Lung Neoplasms/drug therapy/genetics MH - Quinazolines MH - ErbB Receptors/genetics/metabolism MH - Republic of Korea MH - Mutation MH - Protein Kinase Inhibitors/adverse effects MH - *Morpholines MH - *Pyrazoles MH - *Pyrimidines PMC - PMC10789945 OTO - NOTNLM OT - EGFR mutation OT - Lazertinib OT - Non-small-cell lung carcinoma COIS- Conflicts of Interest Ki Hyeong Lee reports participation in advisory boards and honoraria from BMS, MSD, AstraZeneca, Pfizer, Eli Lilly, Yuhan Corporation, and research funding from Merck outside the submitted work. Byoung Chul Cho has received research funding from MOGAM Institute, LG Chem, Oscotec, Interpark Bio Convergence Corp, GIInnovation, GI-Cell, Abion, Abbvie, AstraZeneca, Bayer, Blueprint Medicines, Boehringer Ingelheim, Champions Oncology, CJ bioscience, CJ Blossom Park, Cyrus, Dizal Pharma, Genexine, Janssen, Lilly, MSD, Novartis, Nuvalent, Oncternal, Ono, Regeneron, Dong-A ST, Bridgebio Therapeutics, Yuhan Corporation, ImmuneOncia, Illumina, KANAPH Therapeutics Inc., Therapex, JINTSbio, Hanmi and CHA Bundang Medical Center. He has received consulting fees from Abion, BeiGene, Novartis, AstraZeneca, Boehringer-Ingelheim, Roche, BMS, CJ, CureLogen, Cyrus Therapeutics, Ono Pharmaceutical, Onegene Biotechnology, Yuhan Corporation, Pfizer, Eli Lilly, GI-Cell, Guardant, HK Inno-N, Imnewrun Biosciences Inc., Janssen, Takeda, MSD, Janssen, Medpacto, Blueprint Medicines, RandBio, and Hanmi. He receives royalty from Champions Oncology, Crown Bioscience, Imagen and serves on the advisory board of KANAPH Therapeutics Inc., Bridgebio Therapeutics, Cyrus Therapeutics, Guardant Health, and Oscotech Inc. He was an invited speaker for ASCO, AstraZeneca, Guardant, Roche, ESMO, IASLC, Korean Cancer Association, Korean Society of Medical Oncology, Korean Society of Thyroid-Head and Neck Surgery, Korean Cancer Study Group, Novartis, MSD, The Chinese Thoracic Oncology Society, and Pfizer. He is on the board of directors for Interpark Bio Convergence Corp., and J INTS BIO. He is a founder of the DAAN Biotherapeutics and owns stocks of TheraCanVac Inc., Gencurix Inc., Bridgebio Therapeutics, KANAPH Therapeutics Inc., Cyrus therapeutics, Interpark Bio Convergence Corp., and J INTS BIO. Myung-Ju Ahn reports research funding from AstraZeneca, Lilly, MSD, Merck, Ono Pharmaceutical, Takeda, Yuhan Corporation, Amgen, Pfizer, Novartis, Roche, Alpha-Pharmaceuticals and honoraria from AstraZeneca, Lilly, MSD, Merck, Ono, Takeda, Yuhan Corporation, Amgen, Pfizer, Novartis and Roche. Youngjoo Lee reports consulting fees from Roche, Merck, Yuhan Corporation, and Bayer. Joo-Hang Kim received grants from AstraZeneca, Yuhan Corporation, Roche, Amgen, and BeiGene. Young Joo Min reports research funding from AstraZeneca, MSD, Merck, Ono Pharmaceutical, Yuhan Corporation, AMGEN, Roche and honoraria from AstraZeneca, MSD, Merck, and Ono Pharmaceutical. Jin-Hyuk Choi reports research funding from AstraZeneca, Roche, and Samyang Holdings Korea. Dong-Wan Kim reports research funding to his institution from Alpha Biopharma, Amgen, Astrazeneca/Medimmune, Boehringer-Ingelheim, BMS, Bridgebio Therapeutics, Chong Keun Dang, Daiichi-Sankyo, GSK, Hanmi, InnoN, Janssen, Merck, Merus, Mirati Therapeutics, MSD, Novartis, Ono Pharmaceutical, Pfizer, Roche/Genentech, Takeda, TP Therapeutics, Xcovery, and Yuhan Corporation. Jin Hyoung Kang reports research funding from AstraZeneca, Ono Pharma Korea, Daiichi Sankyo/UCB Japan, Yuhan Corporation and received honoraria from AstraZeneca, Ono Pharmaceutical, Lilly and Boehringer Ingelheim. He is a consultant for MSD Oncology, AstraZeneca, Ono Pharmaceutical, Boehringer Ingelheim, Yuhan Corporation, Genexine and was invited speaker for Boehringer Ingelheim, Pfizer and Roche. Jangyoung Wang and SeokYoung Choi are employees of Yuhan Corporation. All other authors have no relevant relationships to disclose. The study was sponsored by Yuhan Corporation. The study sponsor funded medical writing and editorial support for the publication. EDAT- 2023/07/05 01:06 MHDA- 2024/01/17 06:43 PMCR- 2024/01/01 CRDT- 2023/07/04 19:10 PHST- 2023/03/09 00:00 [received] PHST- 2023/06/23 00:00 [accepted] PHST- 2024/01/17 06:43 [medline] PHST- 2023/07/05 01:06 [pubmed] PHST- 2023/07/04 19:10 [entrez] PHST- 2024/01/01 00:00 [pmc-release] AID - crt.2023.453 [pii] AID - crt-2023-453 [pii] AID - 10.4143/crt.2023.453 [doi] PST - ppublish SO - Cancer Res Treat. 2024 Jan;56(1):48-60. doi: 10.4143/crt.2023.453. Epub 2023 Jun 27.