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Circulating Cell-Free DNA Yield and Circulating-Tumor DNA Quantity from Liquid Biopsies of 12 139 Cancer Patients
Clinical Chemistry ( IF 9.3 ) Pub Date : 2021-08-20 , DOI: 10.1093/clinchem/hvab176
Richard S P Huang 1 , Jinpeng Xiao 1 , Dean C Pavlick 2 , Cui Guo 2 , Lei Yang 2 , Dexter X Jin 2 , Bernard Fendler 2 , Eric Severson 1 , Jonathan Keith Killian 2 , Matthew Hiemenz 2 , Daniel Duncan 1 , Douglas I Lin 2 , Lucas Dennis 2 , Aparna Aiyer 2 , Ole Gjoerup 2 , Geoff Oxnard 2 , Jeffrey Venstrom 2 , Julia Elvin 2 , Shakti H Ramkissoon 1, 3 , Jeffrey S Ross 2, 4
Affiliation  

Background The amounts of circulating cell-free DNA (cfDNA) and circulating-tumor DNA (ctDNA) present in peripheral blood liquid biopsies can vary due to preanalytic/analytic variables. In this study, we examined the impact of patient age, sex, stage, and tumor type on cfDNA yield, ctDNA fraction, and estimated ctDNA quantity from a large cohort of clinical liquid biopsy samples. Methods We performed a retrospective analysis of 12 139 consecutive samples received for liquid biopsy (FoundationOne® Liquid) clinical testing. Results Significant differences in both cfDNA yield and estimated ctDNA quantity were observed based on the underlying tumor type that initiated the liquid biopsy analysis and the stage of the patient (P < 0.001). In addition, significant differences in ctDNA quantity were present based in both the patient age and sex (P < 0.001). Importantly, we saw a significantly higher success rate of issuing a clinically useful report in patients with higher levels of cfDNA yield and ctDNA quantity (P < 0.001). Conclusions In this study, we show that ctDNA quantity varied significantly based on patient age, sex, stage, and tumor type, which could offer an explanation as to why certain liquid biopsy specimens are more likely to fail sequencing or provide clinically meaningful results. In addition, this could affect future clinical decisions on the blood sample volumes required to allow successful liquid biopsy testing.

中文翻译:

来自 12139 名癌症患者的液体活检的循环无细胞 DNA 产量和循环肿瘤 DNA 数量

背景 由于分析前/分析变量,外周血液体活检中存在的循环游离细胞 DNA (cfDNA) 和循环肿瘤 DNA (ctDNA) 的量可能会有所不同。在这项研究中,我们从大量临床液体活检样本中检查了患者年龄、性别、分期和肿瘤类型对 cfDNA 产量、ctDNA 分数和估计 ctDNA 数量的影响。方法 我们对连续收到的 12139 份用于液体活检 (FoundationOne® Liquid) 临床测试的样本进行了回顾性分析。结果 根据启动液体活检分析的潜在肿瘤类型和患者的分期,观察到 cfDNA 产量和估计的 ctDNA 数量存在显着差异(P < 0.001)。此外,基于患者年龄和性别,ctDNA 数量存在显着差异(P < 0.001)。重要的是,我们发现在具有较高水平 cfDNA 产量和 ctDNA 数量的患者中发布临床有用报告的成功率显着提高 (P < 0.001)。结论 在本研究中,我们表明 ctDNA 数量因患者年龄、性别、分期和肿瘤类型而有显着差异,这可以解释为什么某些液体活检标本更有可能无法测序或提供具有临床意义的结果。此外,这可能会影响未来对成功进行液体活检测试所需的血样量的临床决策。我们发现在 cfDNA 产量和 ctDNA 数量较高的患者中发布临床有用报告的成功率显着提高(P < 0.001)。结论 在本研究中,我们表明 ctDNA 数量因患者年龄、性别、分期和肿瘤类型而有显着差异,这可以解释为什么某些液体活检标本更有可能无法测序或提供具有临床意义的结果。此外,这可能会影响未来对成功进行液体活检测试所需的血样量的临床决策。我们发现在 cfDNA 产量和 ctDNA 数量较高的患者中发布临床有用报告的成功率显着提高(P < 0.001)。结论 在本研究中,我们表明 ctDNA 数量因患者年龄、性别、分期和肿瘤类型而有显着差异,这可以解释为什么某些液体活检标本更有可能无法测序或提供具有临床意义的结果。此外,这可能会影响未来对成功进行液体活检测试所需的血样量的临床决策。这可以解释为什么某些液体活检标本更有可能无法测序或提供临床有意义的结果。此外,这可能会影响未来对成功进行液体活检测试所需的血样量的临床决策。这可以解释为什么某些液体活检标本更有可能无法测序或提供临床有意义的结果。此外,这可能会影响未来对成功进行液体活检测试所需的血样量的临床决策。
更新日期:2021-08-20
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