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中山大学癌症研究发表顶级杂志文章
【字体: 大 中 小 】 时间:2012年05月02日 来源:生物通
编辑推荐:
来自中山大学肿瘤防治中心,浙江省肿瘤医院等全国27家单位的研究人员在肺癌领域完成了自主设计独立开展的随机,双盲III期临床研究,相关成果公布在著名医学期刊《Lancet oncology》(柳叶刀肿瘤,SCI IF 17.764)上。
生物通报道:来自中山大学肿瘤防治中心,浙江省肿瘤医院等全国27家单位的研究人员发表了题为“Gefitinib versus placebo as maintenance therapy in patients with locally advanced or metastatic non-small-cell lung cancer (INFORM; C-TONG 0804): a multicentre, double-blind randomised phase 3 trial”的文章,在肺癌领域完成了自主设计独立开展的随机,双盲III期临床研究,相关成果公布在著名医学期刊《Lancet oncology》(柳叶刀肿瘤,SCI IF 17.764)上。
文章的第一作者和通讯作者为中山大学肿瘤防治中心张力教授,张力教授在中山医科大学肿瘤防治中心长期从事肿瘤化疗医疗、教学和科研工作及抗癌药物的临床研究,擅长肺癌、大肠癌和鼻咽癌的化学治疗。
肺癌是严重危害人类健康的恶性肿瘤之一,也是全世界目前发病率和死亡率最高的癌症之一。非小细胞肺癌是肺癌的主要类型,五年生存率仅为15%。因此,研究肺癌的意义十分重大。
INFORM研究是一项全球首次采用吉非替尼(EGFR TKIs)进行维持治疗的前瞻性、随机、安慰剂对照的大型III期临床研究。这项研究共聚集了全国16个省市共27家中心参与研究,去年在第47届美国临床肿瘤学会年会(ASCO 2011)的肺癌专场中,张力教授代表中国胸部肿瘤协作组(C-TONG ),对研究结果做了大会口头报告。
他们开展采用吉非替尼(为表皮生长因子抑制剂,是目前在全球70多个国家已经上市的治疗肺癌的分子靶向治疗药物)进行常规化疗后维持治疗的前瞻性、随机对照的大型III期临床研究。
这项研究共纳入296例常规一线化疗后获完全缓解(CR)、部分缓解(PR)或疾病稳定(SD)IIIB期或IV期的NSCLC患者,按1:1随机分为吉非替尼维持治疗或安慰剂观察对照组。
结果显示:相比对照组,治疗组无进展生存(PFS)期明显延长(4.8个月对2.6个月,p<0.0001),疾病进展风险下降了58%;治疗组的客观有效率、疾病控制率、生活质量改善均显著优于安慰剂组(P=0.0001)。而针对EGFR突变的亚组分析显示,治疗组EGFR基因突变患者的中位无进展生存期为16.6月,而安慰剂组患者的中位无进展生存期为2.7月,两者有非常显著的差异,疾病进展风险下降了84%(P<0.0001)。这是迄今为止关于晚期NSCLC患者维持治疗中患者生存获益最大的临床研究。
(生物通:万纹)
原文摘要:
Gefitinib versus placebo as maintenance therapy in patients with locally advanced or metastatic non-small-cell lung cancer (INFORM; C-TONG 0804): a multicentre, double-blind randomised phase 3 trial
Background
Maintenance treatment of patients with advanced non-small-cell lung cancer (NSCLC) without disease progression after first-line chemotherapy is a subject of ongoing research. The aim of the randomised, double-blind, placebo-controlled, INFORM study was to investigate the efficacy, safety, and tolerability of the EGFR—tyrosine-kinase inhibitor gefitinib in the maintenance setting.
Methods
Patients were aged 18 years or older, were of east Asian ethnic origin, had a life expectancy of more than 12 weeks, histologically or cytologically confirmed stage IIIb or IV NSCLC, a WHO performance status of 0—2, and had completed four cycles of first-line platinum-based doublet chemotherapy without disease progression or unacceptable toxic effects. Between Sept 28, 2008 and Aug 11, 2009, 296 patients were randomly assigned 1:1 to receive either gefitinib (250 mg per day orally) or placebo (orally) within 3—6 weeks after chemotherapy until progression or unacceptable toxic effects. Randomisation was done via an interactive web response system with computer-generated randomisation codes. Our primary endpoint was progression-free survival assessed in the intention-to-treat population. This completed study is registered with Clinicaltrials.gov, number NCT00770588.
Findings
Progression-free survival was significantly longer with gefitinib (n=148) than with placebo (148) (median progression-free survival 4·8 months [95% CI 3·2—8·5] vs 2·6 months [1·6—2·8]; hazard ratio [HR] 0·42, 95% CI 0·33—0·55; p<0·0001). Adverse events occurred more frequently with gefitinib than with placebo; the most common adverse events of any grade were rash (73 [50%] of 147 in the gefitinib group vs 14 [9%] of 148 in the placebo group), diarrhoea (37 [25%] vs 13 [9%]), and alanine aminotransferase increase (31 [21%] vs 12 [8%]). The most commonly reported grade 3 or 4 adverse event was alanine aminotransferase increase (3 [2%] of 147 in the gefitinib group, none of 148 in the placebo group). Ten of 147 (7%) patients given gefitinib and five of 148 (3%) patients given placebo had serious adverse events. Three deaths were thought to be related to treatment with gefitinib: one from interstitial lung disease; one from lung infection; and one from pneumonia.
Interpretation
Maintenance treatment with gefitinib significantly prolonged progression-free survival compared with placebo in patients from east Asia with advanced NSCLC who achieved disease control after first-line chemotherapy. Clinicians should consider these data when making decisions about maintenance treatment in such patients.
Funding
AstraZeneca.
作者简介:
张力教授 现任中山大学附属肿瘤医院内科副主任,国家新药(抗肿瘤药)临床研究中心(GCP)副主任,国家药品食品监督管理局(SFDA)药物评审咨询专家,教授、主任医师,肿瘤内科硕士导师。中华医学会、中国抗癌协会化疗专业委员会、肺癌专业委员会、美国临床肿瘤学会(ASCO)、国际肺癌研究组织(IASLC)会员,中国抗癌协会肿瘤化疗专业委员会、肺癌专业委员会、临床协作专业委员会(CSCO)委员,中国老年学学会肿瘤专业委员会(CSGO)委员,广东省抗癌协会化疗专业委员会副主任委员,广东省抗癌协会大肠癌专业委员会委员。
《临床肿瘤学》杂志、《癌症》杂志、《Asia-Pacific Journal of Clinical Oncology (APJCO)》杂志编委。1996年和1998年分别赴法国巴黎Institut Gustave Roussy(IGR)肿瘤中心和美国费城Fox Chase肿瘤中心短期进修。2001-2002年在美国德州大学M.D.Anderson肿瘤中心进修。
自1991年一直在中山医科大学肿瘤防治中心从事肿瘤化疗医疗、教学和科研工作及抗癌药物的临床研究,擅长肺癌、大肠癌和鼻咽癌的化学治疗。在国内最早开展和应用放疗前的诱导化疗治疗局部晚期鼻咽癌和大剂量醛氢叶酸+5FU持续滴注48小时(双周疗法)治疗晚期大肠癌的临床研究、非铂类方案及分子靶向治疗晚期非小细胞肺癌。同时对晚期癌症病人的对症支持治疗如:癌性贫血的治疗、恶性肿瘤骨转移的治疗、化疗导致的恶心呕吐治疗、晚期病人的疼痛的治疗等方面也有较深入的研究。