Journal
SEMINARS IN RADIATION ONCOLOGY
Volume 25, Issue 4, Pages 305-312Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.semradonc.2015.05.001
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Funding
- US Department of Defense
- US National Institutes of Health Director's New Innovator Award Program [1-DP2-CA186569]
- National Cancer Institute [1-R01-CA188298]
- Ludwig Institute for Cancer Research
- CRK Faculty Scholar Fund
- Radiological Society of North America
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Tumors continually shed DNA into the blood where it can be detected as circulating tumor DNA (ctDNA). Although this phenomenon has been recognized for decades, techniques that are sensitive and specific enough to robustly detect ctDNA have only become available recently. Quantification of ctDNA represents a new approach for cancer detection and disease burden quantification that has the potential to revolutionize response assessment and personalized treatment in radiation oncology. Analysis of ctDNA has many potential applications, including detection of minimal residual disease following radiotherapy, non-invasive tumor genotyping, and early detection of tumor recurrence. Ultimately, ctDNA-based assays could lead to personalization of therapy based on identification of somatic alterations present in tumors and changes in ctDNA concentrations before and after treatment. In this review, we discuss methods of ctDNA detection and clinical applications of ctDNA-based biomarkers in radiation oncology, with a focus on recently developed techniques that use next-generation sequencing for ctDNA quantification. Semin Radiat Oncol 25:305-312 (C) 2015 Elsevier Inc. All rights reserved.
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