Journal
INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS
Volume 102, Issue 3, Pages 627-634Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ijrobp.2018.06.033
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Funding
- Peter MacCallum Cancer Foundation [1343]
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Purpose: A priori identification of the small proportion of radiation therapy patients who prove to be severely radiosensitive is a long-held goal in radiation oncology. A number of published studies indicate that analysis of the DNA damage response after ex vivo irradiation of peripheral blood lymphocytes, using the gamma-H2AX assay to detect DNA damage, provides a basis for a functional assay for identification of the small proportion of severely radiosensitive cancer patients undergoing radiotherapy. Methods and Materials: We introduce a new, more rigorous, integrated approach to analysis of radiation-induced gamma-H2AX response, using Bayesian statistics. Results: This approach shows excellent discrimination between radiosensitive and non-radiosensitive patient groups described in a previously reported data set. Conclusions: Bayesian statistical analysis provides a more appropriate and reliable methodology for future prospective studies. (C) 2018 Elsevier Inc. All rights reserved.
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