1. Osimertinib versus osimertinib plus chemotherapy for non-small cell lung cancer with EGFR (T790M)-associated resistance to initial EGFR inhibitor treatment: An open-label, randomised phase 2 clinical trial.
- Author
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Tanaka K, Asahina H, Kishimoto J, Miyata Y, Uchida T, Watanabe K, Hamai K, Harada T, Tsubata Y, Sugawara S, Kobayashi K, Sugio K, Oizumi S, and Okamoto I
- Subjects
- Acrylamides adverse effects, Adult, Aged, Aged, 80 and over, Aniline Compounds adverse effects, Antineoplastic Combined Chemotherapy Protocols adverse effects, Carboplatin therapeutic use, Carcinoma, Non-Small-Cell Lung genetics, Carcinoma, Non-Small-Cell Lung mortality, Carcinoma, Non-Small-Cell Lung pathology, ErbB Receptors antagonists & inhibitors, ErbB Receptors genetics, Female, Humans, Japan, Lung Neoplasms genetics, Lung Neoplasms mortality, Lung Neoplasms pathology, Male, Middle Aged, Mutation, Pemetrexed therapeutic use, Progression-Free Survival, Protein Kinase Inhibitors adverse effects, Time Factors, Acrylamides therapeutic use, Aniline Compounds therapeutic use, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Carcinoma, Non-Small-Cell Lung drug therapy, Drug Resistance, Neoplasm, Lung Neoplasms drug therapy, Protein Kinase Inhibitors therapeutic use
- Abstract
Background: Osimertinib is now a standard treatment for patients with previously untreated EGFR-mutated advanced non-small cell lung cancer (NSCLC). We here investigated whether the combination of osimertinib with cytotoxic chemotherapy might hold additive efficacy, as well as tolerability., Patients and Methods: We conducted an open-label randomised phase 2 study to evaluate osimertinib and carboplatin-pemetrexed combination in comparison with osimertinib monotherapy in EGFR mutation-positive NSCLC patients who experienced disease progression associated with the emergence of the T790M resistance mutation of EGFR during first-line EGFR-TKI therapy. The primary endpoint was PFS, with secondary endpoints, including OS, response, and safety. Given that osimertinib was approved as a first-line treatment during the study, patient accrual was discontinued, and a final analysis was performed for the 62 enrolled patients., Results: Median PFS was 15.8 months for the osimertinib monotherapy group and 14.6 months for the combination therapy group (hazard ratio of 1.09, with a 95% confidence interval of 0.51-2.32; P = .83). Median OS was not reached in either group. The overall response rate was 71.4% in the osimertinib monotherapy group and 53.6% in the combination group. The frequency or severity of known adverse events in the combination group was comparable to those with carboplatin and pemetrexed previously reported, and novel adverse events were not observed in this study., Conclusion: This is the first randomised study to investigate the efficacy and safety of the combination of osimertinib and cytotoxic chemotherapy for EGFR-mutated NSCLC. The addition of chemotherapy to osimertinib as a second-line treatment did not prolong survival, while it was found to be generally tolerable. This combination strategy will be further validated in the first-line setting., Trial Registration: Japan Registry of Clinical Trials (jRCT) identifier: jRCTs071180062., Competing Interests: Conflict of interest statement Dr Tanaka has received personal fees from AstraZeneca, Taiho Pharmaceutical, Ono Pharmaceutical, Merck Sharp & Dohme Oncology, Eli Lilly Japan KK, Bristol-Myers Squibb, Abbvie, Kyowa Hakko Kirin, Novartis and Chugai Pharmaceutical outside the submitted work. Dr Asahina has received personal fees from AstraZeneca, Chugai Pharmaceutical, Eli Lilly Japan KK, Kyowa Hakko Kirin and Merck Sharp & Dohme Oncology outside the submitted work. Dr Kishimoto has received personal fees from Chugai Pharmaceutical outside the submitted work. Dr Miyata has no conflict of interest disclosures. Dr Uchida has no conflict of interest disclosures. Dr Watanabe has no conflict of interest disclosures. Dr Hamai has no conflict of interest disclosures. Dr Harada had no conflict of interest disclosures. Dr Tsubata has received personal fees from Daiichi Sankyo, Chugai Pharmaceutical and AstraZeneca outside the submitted work. Dr. Sugawara AstraZeneca, Chugai Pharmaceutical, Nippon Boehringer Ingelheim, Pfizer, Merck Sharp & Dohme Oncology, Ono Pharmaceutical, Bristol-Myers Squibb, Eli Lilly Japan KK, Novartis, Taiho Pharmaceutical, Kyowa Hakko Kirin and Yakult. Dr Kobayashi has received personal fees from AstraZeneca, Bristol-Myers Squibb, Ono Pharmaceutical, Nippon Boehringer Ingelheim and Taiho Pharmaceutical. Dr Sugio has received personal fees from AstraZeneca, Chugai Pharmaceutical, Eli Lilly Japan KK, Taiho Pharmaceutical and Nippon Boehringer Ingelheim; grants from Merck Sharp & Dohme Oncology. Dr Oizumi has received grants and personal fees from AstraZeneca; personal fees from Eli Lilly Japan KK; grants from Abbvie, Ono Pharmaceutical, Kissei Pharmaceutical, Chugai Pharmaceutical, Pfizer and Bristol-Myers Squibb outside the submitted work. Dr Okamoto has received grants and personal fees from Nippon Boehringer Ingelheim, AstraZeneca, Taiho Pharmaceutical, Ono Pharmaceutical, Merck Sharp & Dohme Oncology, Eli Lilly Japan KK, Bristol-Myers Squibb and Chugai Pharmaceutical; grants from Astellas Pharma, Novartis and AbbVie; and personal fees from Pfizer outside the submitted work., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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