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Predicting long-term metastatic risk after radical prostatectomy: Adding Genomic Prostate Score, grade group, and cribriform size to unfavorable histology burden translates into minimal incremental discrimination

Urologic Oncology: Seminars and Original Investigations·August 7Open Access
Urology & NephrologyConfirms priorProstate CancerRetrospective Cohort StudyGenomic ClassifierRadical ProstatectomyAdultOncotype DX Genomic Prostate ScoreGenomic Prostate Score

Summary

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What was studied

In 418 men from an event-enriched radical prostatectomy (RP) cohort (1987–2004), this study evaluated whether adding Genomic Prostate Score (GPS), cribriform size, and Grade Group to quantitative unfavorable histology burden (UH%) improves 15-year metastasis prediction.

Key findings

UH% alone yielded a c-index of ~0.85 for 15-year metastasis prediction; adding GPS and cribriform size raised this to 0.901. UH ≥10% carried an HR of 50.95 (95% CI 10.4–249), and all 102 metastatic events (24%) occurred exclusively in UH-positive tumors.

Study limitations

Retrospective, single-institution cohort with centralized pathology review limits generalizability; event-enriched design inflates event rate relative to typical clinical populations; long accrual window (1987–2004) may not reflect contemporary surgical or pathological practice.

Clinical implications

Quantitative unfavorable histology burden (UH%) should anchor post-RP risk stratification — it outperforms Grade Group, stage, and genomic classifiers alone. GPS and cribriform size offer marginal refinement but are unlikely to change management once UH burden is known.

Related Questions

Explore related topics

What is unfavorable histology in prostate cancer and how does it predict metastasis after radical prostatectomy?How does Genomic Prostate Score compare to pathological features for post-prostatectomy risk stratification?What role does intraductal carcinoma and cribriform morphology play in prostate cancer prognosis?

Publication Details

Year
2026
Journal
Urologic Oncology: Seminars and Original Investigations
Sample Size
n=418
Source
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