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therascreen EGFR Pyro Kit

基于测序的方法定量检测EGFR基因中癌症相关的突变

S_1084_5_GEN_V2

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therascreen EGFR Pyro Kit (24)

Cat. No. / ID:   971480

For 24 reactions: Sequencing Primers, PCR Primers, Unmethylated Control DNA, PyroMark PCR Master Mix, CoralLoad Concentrate, and therascreen Buffers and Reagents
€2,455.00
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The therascreen EGFR Pyro Kit is intended for in-vitro diagnostic use.

✓ 全天候自动处理在线订单

✓ 博学专业的产品和技术支持

✓ 快速可靠的(再)订购

特点

  • 符合欧盟体外诊断98/79/EC指令
  • 实时获得多个结果
  • 准确定量EGFR基因中的突变
  • 简单说明复杂的序列信息

产品详情

therascreen EGFR Pyro Kit是用于鉴定EGFR基因突变和缺失的分子检测试剂盒。该试剂盒包含扩增EGFR基因所需的引物和试剂,以及在PyroMark Q24 System上使用焦磷酸测序技术实时定量检测突变所需的缓冲液、引物和试剂。

绩效

线性

将载有野生型基因的质粒或编码子719 GGC->AGC、编码子790 ACG->ATG和编码子858 CTG->CGG及外显子19缺失2235del15和2236del15的突变质粒混合测量其线性(参见" Linearity of deletion 2235del15")。这些质粒以四种不同的突变质粒比例(5、10、30、50%)混合。每种质粒混合物用三种不同量的therascreen EGFR Pyro Kit使用焦磷酸测序技术进行分析,重复分析三次。

检测5–50%突变范围时,含有5%的容许非线性度的结果是线性的。检测编码子719 GGC->AGC、编码子790 ACG->ATG和编码子858 CTG->CGG及外显子19缺失2235del15和2236del15的突变获得同样的结果。

精密度

精密度用于检测这些试验的总的差异,对如上所述的质粒混合物进行三个不同水平的分析,每个混合物重复测量三次以获得精密度数据。

重复性(批内和批间差)基于线性测定数据计算得出(用不同的therascreen EGFR Pyro Kit在同一天测定三次)。中间精密度(实验室内部差异)由同一实验室三次检测得出,这三次检测分别由不同的操作者用不同的PyroMark Q24实时定量焦磷酸序列分析仪以及不同的therascreen EGFR Pyro Kit在不同的三天进行。重现性(实验室之间的差异)由使用不同的therascreen EGFR Pyro Kit在两个不同的实验室分别进行检测得出。

精密度由检测的突变率标准偏差以%表示。在5~50%的突变测量范围内,外显子19缺失2235del15的突变检测的重复性、中间精密度和重现性分别为0.8–1.2、0.7–2.9和0.7–1.8 %。检测编码子719 GGC->AGC、编码子790 ACG->ATG、编码子858 CTG->CGG和外显子19缺失2236del15的突变获得同样的结果。

外显子19缺失2235del15的突变精密度
%突变质粒 重复性(Mean, SD)     中间精确度(Mean, SD)     重现性(Mean, SD)
5 7.7, 0.8 7.4, 0.7 7.4, 0.7
10 14.7, 1.1 14.5, 1.3 14.4, 1.1
30 41.8, 1.2 40.0, 2.0 41.5, 1.7
50 59.4, 1.0 58.2, 2.9 60.7, 1.8
所有值以%为单位。突变质粒所占百分比(%)通过测量OD260确定。SD:标准偏差(n=9)。
查看图表

原理

therascreen EGFR RGQ PCR Kit用于实时定量检测人EGFR基因编码子719、768、790、858和861的突变以及外显子19的缺失和复杂突变,在PyroMark Q24实时定量焦磷酸序列分析仪上使用焦磷酸测序技术检测。EGFR基因可编码表皮生长因子受体(EGFR)蛋白。EGFR基因酪氨酸激酶结构域的突变能够促进肿瘤的生长和增殖。在美国有近10%的非小细胞肺癌患者发现了EGFR基因突变,在东亚该比例达到35%。除此之外,6%的脑瘤患者也发现了EGFR突变。

可检测以下种类的突变:

  • 外显子18 (719):G719A、G719C、G719S
  • 外显子19 (Del):20缺失和复杂突变
  • 外显子20 (768和790):S768I、T790M
  • 外显子21 (858–861):L858R、L861Q、L861R

可手动检测和分析更多突变。

程序

试剂盒由4个PCR分析组成:一个用于检测编码子719(外显子18)的突变,一个用于检测编码子768和790(外显子20)的突变,一个用于检测编码子858到861(外显子21)的突变,还有一个用于检测外显子19的缺失。通过PCR分别扩增4个区域并对特定区域测序(参见" Illustration of the EGFR assay")。含有外显子768和790的扩增子分为2次测序反应。使用该法进行定量和定性分析时,特定区域周围的核酸序列峰被视为标准峰和参照峰。

使用针对外显子18、19、20、21的引物进行PCR扩增后,将扩增子固定在高性能链霉素亲和琼脂糖上。将单链DNA和相应序列的引物退火处理得到DNA。然后在PyroMark Q24 System上设置程序和运行程序对样品进行分析。

推荐使用EGFR Plug-in Report分析结果。报告确保使用正确的LODs并自动分析不同序列,以检测所有的突变和确实。当然,也可选用PyroMark Q24实时定量焦磷酸序列分析仪自带的分析工具来分析。运行后可以通过调节"Sequence to Analyze"来检测外显子19的不同缺失和其他外显子的稀有突变。

查看图表

应用

therascreen EGFR Pyro PCR Kit用于实时定量检测人EGFR基因编码子719、768、790、858和861的突变以及外显子19的缺失和复杂突变。此试剂盒用于辅助鉴定酪氨酸激酶抑制治疗法对癌症患者是否有效。

可检测以下种类的突变:

  • 外显子18 (719):G719A、G719C、G719S
  • 外显子19 (Del):20缺失和复杂突变
  • 外显子20 (768和790):S768I、T790M
  • 外显子21 (858–861):L858R、L861Q、L861R

可手动检测和分析更多突变。

辅助数据和图表

资源

软件使用指南 (1)
For installation and use with PyroMark Q24 Instruments and PyroMark Q24 Software version 2.0
安全数据表 (1)
Download Safety Data Sheets for QIAGEN product components.
试剂盒操作手册 (1)
Version 1
分析软件 (1)
EGFR Plug-in 1.3
SOFTWARE (2MB)
Version 1.3.0.7
For use with PyroMark Q24 Software version 2.0.8
Safety Data Sheets (1)
Certificates of Analysis (1)

FAQ

Can I use more than 10ng DNA for the PCR reaction for my therascreen Pyro Kits?
It is not recommended to use more than 10ng for the PCR reaction in the therascreen BRAF, therascreen EGFR, therascreen KRAStherascreen NRAS Pyro, and therascreen UGT1A1 Kits.  Too much DNA can sometimes lead to inhibition problems in the PCR reaction.
FAQ ID -2385
Can the insertions in Exon 20 be detected with the therascreen EGFR Pyro Kit?
No, there is no specific assay for the insertions and the codon 768 assay does not allow detection of the insertions starting at amino acid 770.
FAQ ID -2389
Which purification kits are recommended for the therascreen Pyro kits?

 

Which purification kits are recommended for the therascreen Pyro kits?

 

FAQ ID -2386
Can PyroMark Gold reagents be vortexed?
Reconstiuted enzyme and substrate of PyroMark Gold Reagents, should not be vortexed since this could lead to conformational changes which affect the activity.
FAQ ID -2844
What plug-ins are available for the therascreen Pyro kits?

Plug-Ins are available for:


These plug-ins are available for download on the respective catalog page under the Product Resources tab in the Analysis Software section. Note: PyroMark Q24 software version 2.0.7 is needed for the usage of the Plug-ins. 

 

FAQ ID -2387
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