Fang Cheng1, Jing Wang2, Jie Chen2, Puyuan Xing3, Junling Li3. 1. National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China;Beijing Chaoyang Sanhuan Cancer Hospital, Beijing 100122, China. 2. Beijing Chaoyang Sanhuan Cancer Hospital, Beijing 100122, China. 3. National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
Abstract
BACKGROUND: Epidermal growth factor receptor tyrosine kinase inhinitors (EGFR-TKIs) inhibit tumor growth by affecting signal transduction, and are well tolerated. The aims of this study was to observe the effect of erlotinib in patients with squamous cell lung cancer. METHODS: The 34 patients with squamous cell lung cancer treated with erlotinib 150 mg orally once daily until disease progression or intolerable adverse reactions. RESULTS: The 7 patients were treated with erlotinib as first-line treatment, 6 patients as maintenance therapy (1 case withdrawal of severe toxicity), 9 patients second-line treatment, 5 patients as third-line and 7 patients as further-line therapy. 11 patients died. The median progression-free survival (PFS) was 3.5 months, ranging from 1 month to 55 months (the patient withdrawal of severe toxicity was not included). CONCLUSIONS: Erlotinib was effective for patients with squamous cell lung cancer who can not tolerate chemotherapy or refused chemotherapy and with unknown EGFR status. Adverse reactions were tolerable.
BACKGROUND:Epidermal growth factor receptor tyrosine kinase inhinitors (EGFR-TKIs) inhibit tumor growth by affecting signal transduction, and are well tolerated. The aims of this study was to observe the effect of erlotinib in patients with squamous cell lung cancer. METHODS: The 34 patients with squamous cell lung cancer treated with erlotinib 150 mg orally once daily until disease progression or intolerable adverse reactions. RESULTS: The 7 patients were treated with erlotinib as first-line treatment, 6 patients as maintenance therapy (1 case withdrawal of severe toxicity), 9 patients second-line treatment, 5 patients as third-line and 7 patients as further-line therapy. 11 patients died. The median progression-free survival (PFS) was 3.5 months, ranging from 1 month to 55 months (the patient withdrawal of severe toxicity was not included). CONCLUSIONS:Erlotinib was effective for patients with squamous cell lung cancer who can not tolerate chemotherapy or refused chemotherapy and with unknown EGFR status. Adverse reactions were tolerable.
厄洛替尼是小分子口服EGFR-TKI,与另一种EGFR-TKI吉非替尼不同的是,厄洛替尼与靶点的亲和力强、特异性高、血浆浓度高,半衰期短,口服厄洛替尼较吉非替尼易于吸收,对于脑转移患者来说有一定疗效[。2006年美国临床肿瘤学会(American Society of Clinical Oncology, ASCO)公布显示,厄洛替尼用于吸烟的男性鳞癌患者和肿瘤患者能显著改善这类患者的生存期[。2010年以前厄洛替尼主要使用在两个或者两个以上化疗方案失败,卡氏功能状态评分(Karnofsky performance status, KPS)0分-1分的局部晚期或者转移性NSCLC患者,当时尚未提及特定人群的基因检测情况,但是一部分患者在发现NSCLC后立即使用厄洛替尼治疗,效果很好。直至2010年美国国立综合癌症网络(National Comprehensive Cancer Network, NCCN)指南提及厄洛替尼可用于NSCLCEGFR突变人群的一线治疗。目前的研究大部分都是对厄洛替尼治疗NSCLC的疗效分析,不论肿瘤分期如何都可以选择厄洛替尼,EGFR突变的患者有效率较高,临床发现对于突变状况不明的患者,厄洛替尼也有疗效。晚期多程治疗后的患者,体质较差,耐受性欠佳,使用厄洛替尼有着明显的优势,能够在较少的毒副反应、安全系数高的前提下,最大限度延长患者生存时间,改善生活质量,为下一步治疗争取机会[。所以,对于晚期NSCLC患者来说,治疗应尽可能地依据循证医学的证据以及批准的适应症,避免或减少对患者的伤害,根据患者意愿满足患者要求。对于一部分晚期不能耐受化疗或拒绝化疗,并且基因状况不明的肺鳞癌患者来说,为争取快速控制症状和疾病进展,避免不能耐受的毒性,厄洛替尼似乎亦是可以考虑的选择。
Authors: Thomas J Lynch; Daphne W Bell; Raffaella Sordella; Sarada Gurubhagavatula; Ross A Okimoto; Brian W Brannigan; Patricia L Harris; Sara M Haserlat; Jeffrey G Supko; Frank G Haluska; David N Louis; David C Christiani; Jeff Settleman; Daniel A Haber Journal: N Engl J Med Date: 2004-04-29 Impact factor: 91.245