lx92
发表于 2014-1-16 17:07:24
草船借箭 发表于 2013-10-13 22:14
280对于确定CMET阳性的效果真不错,没有办法做基因检测的就愁人啊
请问如何确定CMET阳性, 免疫组化(++)算是阳性吗?是CMET扩增吗?适用于INC280吗?
草船借箭
发表于 2014-1-16 19:53:35
lx92 发表于 2014-1-16 17:07
请问如何确定CMET阳性, 免疫组化(++)算是阳性吗?是CMET扩增吗?适用于INC280吗?
lx92
发表于 2014-1-17 11:07:25
草船借箭 发表于 2014-1-16 19:53
是不是说CMET基因扩增跟EGFR突变一样,也是一种基因检查,更CMET的免疫组化的结果没有关系?INC280是否适用,应该根据基因扩增的检查结果?
下午去医科院肿瘤医院病理科问问看他们是否有这个检查项目。
lx92
发表于 2014-1-17 17:16:06
lx92 发表于 2014-1-17 11:07
是不是说CMET基因扩增跟EGFR突变一样,也是一种基因检查,更CMET的免疫组化的结果没有关系?INC280是否适 ...
那CMET是否会存在憨叔提到的类似EGFR的情况,19,21突变的不一定有用,而很多基因野生的病患,易/特照样有效。
如果这样那基因检测似乎就没有多大意义了。
linruyicn
发表于 2014-1-18 20:13:18
英语不行啊,惭愧
xlyg
发表于 2014-5-25 18:58:37
【ASCO2014】中国研究:INC280联合吉非替尼治疗NSCLC患者的疗效
2014年美国临床肿瘤学会年会将于当地时间5月30日-6月3日在芝加哥召开,根据大会的会议日程,我国肿瘤专家吴一龙教授在6月3日上午有一项研究在“Poster Highlights Session”中展出,下面和大家提前分享这项精彩研究。医脉通小编们今年也将继续奔赴ASCO年会现场,及时将各项最新研究进展整理、发布,欢迎大家保持关注!
很多EGFR突变的NSCLC患者尽管对EGFR-TKI药物有比较高的应答率,但是最终会复发。MET通路的失调在耐药机制上起着一定的作用,这发生在15-20%的病例中。INC280是一种高选择性的口服MET抑制剂,研究发现其与EGFR-TKI药物联合在EGFR突变/MET活化的NSCLC中具有临床前活性。
研究方法
这是一项针对INC280联合吉非替尼的Ib/II期、开放标签、剂量逐步增加的研究,病人年龄≥18岁,ECOG PS≤2,EGFR突变的NSCLC患者,之前接受过EGFR-TKI药物治疗,后疾病出现进展,已经确认是MET失调(扩增或者过表达)。
主要目的(Ib期)是确认MTD,推荐INC280联合吉非替尼的II期剂量;次要目的是安全性、疗效、药效学和药代学。通过过量控制指导下的剂量递增,使用一种自适应的贝叶斯logistic回归模型确定MTD。
研究结果
到2013年12月2日,41例病人进入Ib期研究(59%女性,平均年龄58岁)。INC280分为100-800mg QD和200-600mg BID的7个剂量队列,联合吉非替尼 250mg QD。剂量限制毒性(QLT)在两个病人中发生:头晕(800mg QD)和呼吸困难(600mg BID)。最常见的药物相关不良反应(任何等级)为恶心(27%),呕吐,腹泻和皮疹(所有为22%)。最常见的3/4级不良反应为脂肪酶增加(7%),淀粉酶增加(5%)。有一人死亡,未排除INC280的原因。
初步数据分析未发现INC280与吉非替尼有药代动力学相互作用。在6/41病人(15%)中出现局部缓解,包括3个在400mg BID组,其中有5个人在入组前EGFR-TKI药物是最后的治疗。所有的应答者都是高MET状态。
结论
口服INC280联合吉非替尼耐受性良好,II期推荐剂量还未定。初步临床活性支持对INC280联合吉非替尼在TKI耐药的MET阳性NSCLC患者中的进一步评估。临床试验信息:NCT01610336
英文摘要
Safety and efficacy of INC280 in combination with gefitinib (gef) in patients with EGFR-mutated (mut), MET-positive NSCLC: A single-arm phase lb/ll study.(Abstract 8017)
Authors: Yi-Long Wu, James Chih-Hsin Yang, Dong-Wan Kim, et al.
Session Type: Poster Highlights Session
Background: Despite high response rates to EGFR tyrosine kinase inhibitors (TKIs), most patients (pts) with EGFR-mut NSCLC ultimately relapse. Dysregulation of the MET pathway is implicated as a therapeutically tractable resistance mechanism, occurring in 15–20% of cases. INC280 is a highly selective, oral MET inhibitor with preclinical activity in EGFR-mut/MET-activated NSCLC when combined with EGFR TKIs.
Methods: This Ph Ib/II, open-label, dose-escalation study of INC280 plus gef was performed in pts (age ≥18 yrs, ECOG PS ≤2) with EGFR-mut NSCLC who progressed after prior EGFR TKI, and have confirmed MET dysregulation (amplification or overexpression ). The primary objective (Ph Ib) was to determine the MTD/recommended Ph II dose (RP2D) of INC280 plus gef; secondary objectives were safety, efficacy, pharmacodynamics and PK. An adaptive Bayesian logistic regression model with overdose control guided dose escalation to establish the MTD.
Results: As of December 2, 2013, 41 pts were enrolled in the ongoing Ph Ib part of the study (59% female, median age 58 years). Pts were treated with INC280 at 7 dose cohorts of 100–800 mg QD and 200–600 mg BID, in combination with gef 250 mg QD. Dose-limiting toxicities (DLTs) occurred in 2 pts: dizziness (800 mg QD) and dyspnea (600 mg BID). The most frequent drug-related AEs (any grade ) were nausea (27 %), vomiting, diarrhea, and rash (all 22%). The most common drug-related Gr 3/4 AEs were increased lipase (7 %), and increased amylase (5%). For one death, causality to INC280 was not ruled out. INC280 exposure increased with dose from 100–800 mg QD and 200–400 mg BID; preliminary data show no PK interactions with gef. Partial responses were seen in 6/41 (15%) evaluable pts; 5 confirmed, 1 unconfirmed, including 3/7 pts (43%) on 400 mg BID; 5/6 responders had EGFR TKIs as a last treatment prior to study entry. All responders had high MET status.
Conclusions: Oral INC280 in combination with gef is well tolerated; the RP2D has not yet been defined. Preliminary clinical activity supports further evaluation of INC280 combined with gef in MET-positive NSCLC resistant to EGFR TKIs. Clinical trial identifier: NCT01610336. Clinical trial information: NCT01610336.
Ryan
发表于 2014-5-26 23:26:23
15%局部缓解率,很少病友反映用药情况。
cuike_lucky
发表于 2014-8-25 15:02:00
有效率是不是比184要低,毕竟184用过的人也多
bwd001
发表于 2014-8-30 11:54:44
这个药到底多少是有效剂量?
monox
发表于 2014-8-30 13:17:25
草船借箭 发表于 2014-1-16 19:53
CMET 基因检测好像很多地方没有啊。 愁死人。