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The Unique Spatial-Temporal Treatment Failure Patterns of Adjuvant Gefitinib Therapy: A Post Hoc Analysis of the ADJUVANT Trial (CTONG 1104)

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机构: [a]Zhongshan Hospital, Fudan University, Shanghai, China [b]Guangdong Lung Cancer Institute, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou,China [c]Zhejiang Cancer Hospital, Hangzhou, China [d]Hunan Cancer Hospital, Changsha, China [e]The Affiliated Hospital of Medical College, Qingdao University, Qingdao, China [f]Liaoning Cancer Hospital, Shenyang, China [g]Fujian Medical University Union Hospital, Fuzhou, China [h]Jilin Provincial Cancer Hospital, Changchun, China [i]Jiangsu Cancer Hospital, Nanjing, China [j]The People’s Hospital of Peking University, Beijing, China [k]Shanghai Pulmonary Hospital, Shanghai, China [l]Tangdu Hospital, Xi’an, China [m]Peking University First Hospital, Beijing, China [n]Fujian Cancer Hospital, Fuzhou, China [o]Beijing Chest Hospital, Beijing, China [p]The First Hospital of China,Medical University, Shenyang, China [q]Beijing Cancer Hospital, Beijing, China [r]The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China [s]West China,Hospital of Sichuan University, Chengdu, China [t]Sichuan Cancer Hospital, Chengdu, China [u]The Northern Jiangsu People’s Hospital, Yangzhou, China [v]The First Affiliated Hospital of Suzhou University, Suzhou, China
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关键词: NSCLC EGFR tyrosine kinase inhibitor gefitinib adjuvant chemotherapy

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Introduction: Adjuvant gefitinib therapy prolonged disease-free survival in patients with resected early-stage EGFR-mutation positive NSCLC in the ADJUVANT study (CTONG 1104). However, treatment failure patterns after gefitinib therapy are less well characterized. Methods: Overall, 222 stage N1-N2, EGFR-mutant NSCLC patients received gefitinib or vinorelbine plus cisplatin (VP) treatment. Tumor recurrences or metastases occurring during follow-up were defined as treatment failure; sites and data of first treatment failure were recorded. A post hoc analysis of treatment failure patterns which was estimated by Kaplan-Meier and hazard rate curves in modified intention-to-treat patients was conducted. Results: There were 114 recurrences and 10 deaths before recurrence across 124 progression events. Spatial distribution analysis showed that the first metastasis site was most frequently the central nervous system in the gefitinib group (29 of 106 [27.4%]), extracranial metastases were most frequent in the VP group (32 of 87 [36.8%]). Temporal distribution analysis showed lower tumor recurrence with gefitinib than with VP 0 to 21 months post-surgery. However, recurrence with gefitinib showed a constant rate of increase 12 months post-surgery. The first peak of extracranial metastasis appeared during 9 to 15 months with VP and 24 to 30 months with gefitinib. The highest peak for central nervous system metastases post-surgery occurred after 12 to 18 months with VP and 24 to 36 months with gefitinib. Conclusions: Adjuvant gefitinib showed advantages over VP chemotherapy in treatment failure patterns especially in extracranial metastasis. Adjuvant tyrosine kinas inhibitors may be considered as a treatment option in resected stage N1-N2 EGFR-mutant NSCLC but longer duration should be explored. (C) 2018 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.

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出版当年[2019]版:
大类 | 1 区 医学
小类 | 1 区 肿瘤学 2 区 呼吸系统
最新[2023]版:
大类 | 1 区 医学
小类 | 1 区 肿瘤学 1 区 呼吸系统
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出版当年[2019]版:
Q1 RESPIRATORY SYSTEM Q1 ONCOLOGY
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Q1 ONCOLOGY Q1 RESPIRATORY SYSTEM

影响因子: 最新[2023版] 最新五年平均 出版当年[2019版] 出版当年五年平均 出版前一年[2018版] 出版后一年[2020版]

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第一作者机构: [a]Zhongshan Hospital, Fudan University, Shanghai, China
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通讯机构: [b]Guangdong Lung Cancer Institute, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou,China [*a]Guangdong Lung Cancer Institute, Guangdong General Hospital & Guangdong Academy of Medical Sciences, 106 Second Zhongshan Road, Guangzhou 510080, China
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