Serially Quantifying TERT Rearrangement Breakpoints in ctDNA Enables Minimal Residual Disease Monitoring in Patients with Neuroblastoma.

IF 2 Q3 ONCOLOGY
Jan F Hollander, Annabell Szymansky, Jasmin Wünschel, Kathy Astrahantseff, Carolina Rosswog, Anne Thorwarth, Theresa M Thole-Kliesch, Rocío Chamorro González, Patrick Hundsdörfer, Kathrin Hauptmann, Karin Schmelz, Dennis Gürgen, Julian M M Rogasch, Anton G Henssen, Matthias Fischer, Johannes H Schulte, Cornelia Eckert, Angelika Eggert, Marco Lodrini, Hedwig E Deubzer
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Abstract

Significance: Real-time molecular monitoring of TERT-rearranged high-risk neuroblastoma is an unmet clinical need. We tested liquid biopsy-based assays for patient-individualized TERT breakpoint sequences to monitor disease in pediatric patients. Our digital PCR approach provides high resolution of spatial and temporal disease quantification in individual patients and is applicable for clinical routine.

连续量化循环肿瘤DNA中的TERT重排断点,可以对神经母细胞瘤患者进行最小残留疾病监测。
在约30%被诊断为高危神经母细胞瘤的患者中,端粒酶被基因组TERT重排重新激活。如果RAS/MAPK/ALK信号转导网络也存在突变,则患者预后不佳。我们提出了一种基于液体活检的监测策略,用于这一特别脆弱的儿科患者亚组,实时分子诊断工具迄今为止是有限的。采用液滴数字PCR定量分析患者个体化TERT重排断点拷贝数、ALK拷贝数和等位基因ALK p.R1275Q突变频率,对纵向采集的液体活检(外周血和骨髓血浆,n=44个生物样本)、骨髓单核细胞部分和匹配的肿瘤样本进行定量分析。将标记检测与现行金标准诊断法进行比较。来自169名患者的全基因组和靶向小组测序数据的重新分析确定了来自55名患者的初始和/或复发诊断时收集的64个TERT重排神经母细胞瘤样本(总共有254个TERT重排事件)。检测和定量外周血中仅1ng总游离DNA的独特TERT重排断点可改善个别患者的治疗反应评估和早期复发检测。通过分析骨髓血浆来源的无细胞DNA中独特的TERT重排断点,为骨髓龛中经常出现复发的最小残留疾病检测提供了概念验证。TERT重排断点,作为单一标记或与RAS/MAPK/ALK信号转导网络中的突变结合,可以作为疾病活动性的强大和高度敏感的生物标志物,在空间和时间上比目前TERT驱动的神经母细胞瘤个体患者的金标准诊断更好地解决疾病。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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