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Prevalence of RAS and BRAF mutations in metastatic colorectal cancer patients by tumor sidedness: A systematic review and meta-analysis.
Cancer Medicine ( IF 2.9 ) Pub Date : 2019-12-19 , DOI: 10.1002/cam4.2747
Lauren C Bylsma 1 , Christina Gillezeau 1 , Tamer A Garawin 2 , Michael A Kelsh 2 , Jon P Fryzek 1 , Laura Sangaré 3 , Kimberly A Lowe 4
Affiliation  

Studies have shown that the prevalence of RAS and BRAF mutations may differ by tumor sidedness among metastatic colorectal cancer (mCRC) patients. Both mutation status and tumor sidedness may impact survival and disease progression and RAS mutation status has been shown to predict response to anti-epidermal growth factor receptor (EGFR) therapy. A systematic literature review and meta-analysis were conducted to estimate the pooled prevalence of RAS and BRAF mutations by tumor sidedness in studies of mCRC patients. Forty-four studies comprising 15 981 mCRC patients tested for RAS and/or BRAF mutations were included in the meta-analyses. The prevalence of RAS mutations differed significantly by tumor side (32.4% among left-sided tumors, 41.3% among right-sided tumors; P = .017), as did the prevalence of KRAS mutations (35.8% among left-sided tumors, 46.3% among right-sided tumors; P < .0001) and BRAF mutations (4.3% among left-sided tumors, 16.3% among right-sided tumors; P < .0001). Among right-sided tumors, the prevalence of RAS and KRAS mutations varied significantly by study design, with higher prevalence among observational studies than clinical trials, and there was significant variation by study location for the prevalence of KRAS mutations in left-sided tumors and the prevalence of BRAF mutations in right-sided tumors. These results help to better characterize the mCRC population to better inform clinicians and researchers. Few of the included studies reported overall or progression-free survival (PFS) by both tumor sidedness and mutation status. As both of these factors may have prognostic impact, future studies should consider evaluating survival by these variables.

中文翻译:

肿瘤方面的转移性结直肠癌患者中RAS和BRAF突变的患病率:系统评价和荟萃分析。

研究表明,转移性结直肠癌(mCRC)患者的肿瘤方面,RAS和BRAF突变的患病率可能有所不同。突变状态和肿瘤方面都可能影响生存率和疾病进展,并且RAS突变状态已显示可预测对抗表皮生长因子受体(EGFR)治疗的反应。在mCRC患者的研究中,进行了系统的文献综述和荟萃分析,以通过肿瘤方面评估RAS和BRAF突变的合并患病率。荟萃分析包括44项研究,包括15 981名mCRC患者,这些患者经过RAS和/或BRAF突变检测。RAS突变的患病率在肿瘤侧有显着差异(左侧肿瘤中32.4%,右侧肿瘤中41.3%; P = .017),以及KRAS突变的患病率(左侧肿瘤中35.8%,右侧肿瘤中占46.3%;P <.0001)和BRAF突变(左侧肿瘤中为4.3%,右侧肿瘤中为16.3%; P <.0001)。在右侧肿瘤中,RAS和KRAS突变的患病率因研究设计而异,观察性研究中的患病率高于临床试验,并且在研究位置上,左侧肿瘤和鼻咽癌中KRAS突变的患病率也存在显着差异。右侧肿瘤中BRAF突变的患病率。这些结果有助于更好地表征mCRC人群,从而更好地为临床医生和研究人员提供信息。几乎没有纳入研究通过肿瘤方面和突变状态报告总体或无进展生存期(PFS)。由于这两个因素均可能对预后产生影响,因此未来的研究应考虑通过这些变量评估生存率。右侧肿瘤中占3%;P <.0001)和BRAF突变(左侧肿瘤中为4.3%,右侧肿瘤中为16.3%; P <.0001)。在右侧肿瘤中,RAS和KRAS突变的患病率因研究设计而异,观察性研究中的患病率高于临床试验,并且在研究位置上,左侧肿瘤和鼻咽癌中KRAS突变的患病率也存在显着差异。右侧肿瘤中BRAF突变的患病率。这些结果有助于更好地表征mCRC人群,从而更好地为临床医生和研究人员提供信息。几乎没有纳入研究通过肿瘤方面和突变状态报告总体或无进展生存期(PFS)。由于这两个因素均可能对预后产生影响,因此未来的研究应考虑通过这些变量评估生存率。右侧肿瘤中占3%;P <.0001)和BRAF突变(左侧肿瘤中为4.3%,右侧肿瘤中为16.3%; P <.0001)。在右侧肿瘤中,RAS和KRAS突变的患病率因研究设计而异,观察性研究中的患病率高于临床试验,并且在研究位置上,左侧肿瘤和鼻咽癌中KRAS突变的患病率也存在显着差异。右侧肿瘤中BRAF突变的患病率。这些结果有助于更好地表征mCRC人群,从而更好地为临床医生和研究人员提供信息。几乎没有纳入研究通过肿瘤方面和突变状态报告总体或无进展生存期(PFS)。由于这两个因素均可能对预后产生影响,因此未来的研究应考虑通过这些变量评估生存率。
更新日期:2019-12-19
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