
Detecting ALK Rearrangement with RT-PCR: A Reliable Approach …
At the transcriptional level, reverse transcription polymerase chain reaction (RT-PCR) displays a reliable capacity to detect anaplastic lymphoma kinase (ALK) fusion in tissue samples from patients with non-small-cell lung cancer (NSCLC).
浅述ALK融合突变及其检测方法(上) - 知乎专栏
2013年2月6日 · ALK基因全称为间变性淋巴瘤激酶(anaplastic lymphoma kinase,ALK),总共有29个外显子。 为了方便理解,各位可以将它想象成一辆名为ALK的高铁列车,而29个外显子就是列车的29节车厢,那么“融合突变”就是 指ALK的某节车厢断裂并且与其他班次的列车车厢相接变成一个新的列车,最常见的是从ALK号列车的20号车厢处断裂,并与另一辆名为“ EML4 ”的基因重新拼接,如下所示。 已发现的所有ALK基因融合突变都是在ALK基因外显子20处发生断裂, …
以ALK融合基因检测浅谈PCR、IHC和FISH方法的优劣
2018年7月17日 · 目前针对ALK融合基因检测常用的方法有三种—荧光原位杂交(FISH)、基于PCR扩增技术(RACE-PCR或RT-PCR联合测序技术、qRT-PCR等)和免疫组织化学法(IHC)。 上述三种方法各有其优缺点。 简单来说,FISH是临床试验验证的金标准方法;RT-PCR对标本取材要求较高,需专用的试剂盒进行检测,且只能检出已知的融合;IHC虽简便易行,但阳性标准不统一。 先来看看几项临床研究: 在2014年,法国的雷恩大学医学院在国际肺癌研究协作组的专 …
Identifying the Intergenic ALK Fusion LOC388942‐ALK as a Driver …
5 天之前 · Anaplastic lymphoma kinase (ALK) fusion-positive lung cancer represents approximately 3%–7% of NSCLC cases . ... Sichuan University, who had undergone at least one of the ALK-V, FISH, RT-PCR, and NGS tests. These cases were compiled into a comprehensive ALK database. From this database, a total of 378 patients who tested positive for all four ...
Detecting ALK Rearrangement with RT-PCR: A Reliable Approach …
Both DNA/RNA-based NGS and RNA-based RT-PCR were used to detect EML4-ALK fusion. For samples with discordant ALK status results, fluorescence in situ hybridization (FISH) or Sanger sequencing was used to further confirm the ALK status. Results: In total, 124 samples were successfully analyzed using both NGS and RT-PCR. For 118 samples, results ...
Combination of conventional immunohistochemistry and qRT-PCR …
Compared with FISH and qRT-PCR analyses, immunohistochemistry (IHC) is the preferred screening test in most pathology practices for ALK-rearrangement detection. With 100% sensitivity and 98% specificity, the VENTANA ALK (D5F3) IHC assay has been approved in the EU and some Asian countries for ALK-rearrangement detection.
J Thorac Oncol:NGS、RT-PCR、IHC和FISH4方法检测ALK融合间大PK
目前RT-PCR和NGS用于ALK检测在增多。 本文比较4种检测检测技术。 患者来自ETOP 研究,96例患者进行FISH、RT-PCR和NGS检测,H评分>120定义为 免疫 组化阳性。 RNA提取同样来自福尔马林固定石蜡包埋标本。 对于RT-PCR,引物覆盖最常见的ALK融合类型。 研究目的分析各个检测技术的一致性。 对于NGS,在95例患者中检测出77例(81.1%),RT-PCR在96例中检测出77例(80.2%)。 4种方法分析60例患者55例表现为一致(43例ALK阴性、12例ALK阳性)。 …
ALK 基因检测方法的金标准是?到底哪种好?FISH、RT-PCR …
肺癌中 ALK 基因突变类型为 ALK 融合突变或者称为 ALK 重排,这种突变模式与我们常见的基因点突变模式不同,比如常见的 EML4-ALK 融合突变,EML4 和 ALK 基因分别在 2 号染色体 DNA 的 p21 和 p23,两个基因相隔约 10MB 距离,这 2 个基因片段通过倒位融合形成新的融合基因 …
劳拉替尼:ALK/ROS1阳性非小细胞肺癌患者一线治疗领域的新 …
5 天之前 · 然而,这些特征并不是诊断alk阳性肺癌的必要条件。 (二)诊断方法. 检测alk基因重排对于治疗决策至关重要。目前,检测alk基因重排的方法包括下一代测序(ngs)、荧光原位杂交(fish)、免疫组化(ihc)和逆转录聚合酶链反应(rt-pcr)。
Concordance of IHC, FISH and RT-PCR for EML4-ALK …
2014年2月2日 · In a recent study, RT-PCR detected EML4-ALK variant 1 or 3a/b in 11 of 46 cases (24%) of lung adenocarcinomas that were enriched for wild-type EGFR status. Nine of these 46 cases (20%) were tested positive for variant 1 by RT-PCR; of those 9, only 1 (11%) was unanimously positive by FISH .