OncotypeDx genomic scores independent of disease volume in men with favorable-risk prostate cancer.

Published

Conference Paper

93 Background: To determine if disease volume at biopsy correlates with GPS among men with favorable risk prostate cancer. Methods: All men with NCCN very low (VLR) and low risk (LR) and GPS from 2013-2016 were identified. Disease volume was characterized by percent of positive cores, number of cores with >50% involvement, and largest involvement of any single core. Nonparametric equality of medians was performed to compare the median likelihood of favorable pathology between quartiles. Results: 112 (37.8%) with VLR and 184 (62.2%) with LR disease were identified. The likelihood of favorably pathology by quartile are listed in Table 1. 7/105 (6.3%) with VLR were reclassified as LR, and 13/181 (7.2%) with LR were reclassified as intermediate risk (IR). Patients reclassified to IR by GPS had a median likelihood favorable pathology of 63.0% (IQR 62.0-63.0), 20.0% positive cores (IQR 13.0-29.0), 0 cores with > 50% involved (IQR 0-1), largest core involvement of 20.0% (IQR 10.0-20.0), and PSA density of 0.12 ng/ml/cc (IQR 0.10-0.14). Conclusions: Differences in the likelihood of favorable pathology by disease volume were not clinically significant in men with favorable risk disease. [Table: see text]

Full Text

Duke Authors

Cited Authors

  • Grimberg, DC; Nyame, YA; Greene, DJ; Gupta, K; Berglund, RK; Gong, MC; Stephenson, AJ; Klein, EA

Published Date

  • February 20, 2017

Published In

Volume / Issue

  • 35 / 6_suppl

Start / End Page

  • 93 - 93

Published By

Electronic International Standard Serial Number (EISSN)

  • 1527-7755

International Standard Serial Number (ISSN)

  • 0732-183X

Digital Object Identifier (DOI)

  • 10.1200/jco.2017.35.6_suppl.93