Abstract
Background
Refinement of the risk classification for localized prostate cancer is warranted to aid in clinical decision making. A systematic analysis was undertaken to evaluate the prognostic ability of three genomic classifiers, Decipher, GPS, and Prolaris, for biochemical recurrence, development of metastases and prostate cancer-specific mortality in patients with localized prostate cancer.
Methods
Data sources: MEDLINE, Embase, and Web of Science were queried for reports published from January 2010 to April 2022. Study selection: prospective or retrospective studies reporting prognosis for patients with localized prostate cancer. Data extraction: relevant data were extracted into a customized database by one researcher with a second overreading. Risk of bias was assessed using a validated tool for prognostic studies, Quality in Prognosis Studies (QUIPS). Disagreements were resolved by consensus or by input from a third reviewer. We assessed the certainty of evidence by GRADE incorporating adaptation for prognostic studies.
Results
Data synthesis: a total of 39 studies (37 retrospective) involving over 10,000 patients were identified. Twenty-two assessed Decipher, 5 GPS, and 14 Prolaris. Thirty-four studies included patients who underwent prostatectomy. Based on very low to low certainty of evidence, each of the three genomic classifiers modestly improved upon the prognostic ability for biochemical recurrence, development of metastases, and prostate cancer-specific mortality compared to standard clinical risk-classification schemes. Limitations: downgrading of confidence in the evidence stemmed largely from bias due to the retrospective nature of the studies, heterogeneity in treatment received, and era in which patients were treated (i.e., prior to the 2000s).
Conclusions
Genomic classifiers provide a small but consistent improvement upon the prognostic ability of clinical classification schemes, which may be helpful when treatment decisions are uncertain. However, evidence from current management-era data and of the predictive ability of these tests is needed.
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Data availability
Study protocol: available at www.crd.york.ac.uk/prospero (PROSPERO: CRD42022347950).
Code availability
Statistical code and data set: available from AMG (adelaide.gordon@va.gov).
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Acknowledgements
The authors thank the following key stakeholders and technical expert panel members for providing advice during the conduct of this review but who do not necessarily endorse the stated conclusions: Drs Maria Kelly, Edward Obedian, Michael G. Chang, Andrew Armstrong, Daniel Spratt, and Jeremy Shelton. In addition, we would like to thank Liz Wing and Stacy Lavin, for editorial assistance, and Julie Snyder for administrative support.
Funding
This project was funded by the Department of Veterans Affairs, Veterans Health Administration, Office of Research and Development, Quality Enhancement Research Initiative (ESP 09- 010). This work was also supported by the Durham Center of Innovation to Accelerate Discovery and Practice Transformation (ADAPT) (CIN 13-410) at the Durham VA Health Care System. Primary Funding Source: U.S. Department of Veterans Affairs (PROSPERO CRD42022347950). The US Department of Veterans Affairs was not involved in the design, conduct, or analysis interpretation.
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Conceptualization: MB, DJC, JRG, SRR, DS, AAT, AR-B, JL, FB, RLB, SC, AMG, BE, JMG, KMG. Data curation: AK, AMG, BE, MJ, KMG. Formal analysis: MB, DJC, AK, AMG, KMG. Investigation: MB, DJC, JRG, SRR, DS, AAT, AR-B, JL, FB, RLB, AMG, JMG, KMG. Methodology: MB, DJC, JRG, SRR, DS, AAT, AR-B, JL, FB, RLB, AK, SC, AMG, BE, JMG, KMG. Project administration: AMG, BE, MJ. Supervision: KMG. Visualization: AK, MJ, KMG. Writing—original draft: MB, DJC, JRG, SRR, DS, AAT, AR-B, JL, FB, RLB, AMG, BE, KMG. Writing—review and editing: MB, DJC, JRG, SRR, DS, AAT, AR-B, JL, FB, RLB, AK, SC, AMG, JMG, KMG.
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Boyer, M.J., Carpenter, D.J., Gingrich, J.R. et al. Genomic classifiers and prognosis of localized prostate cancer: a systematic review. Prostate Cancer Prostatic Dis (2024). https://doi.org/10.1038/s41391-023-00766-z
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DOI: https://doi.org/10.1038/s41391-023-00766-z
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