Same risk group, very different benefit. Can biomarkers help identify who needs treatment intensification in prostate cancer? On this episode of BackTable Urology, Dr. Ruchika Talwar and Dr. Angela Jia, a radiation oncologist at University Hospitals Cleveland Medical Center, break down the difference between prognostic and predictive biomarkers and how genomic testing is informing the way clinicians counsel patients. They review trial data suggesting that men with a low genomic score may gain little from adding hormone therapy, along with early prospective evidence that the luminal B subtype may help identify who benefits most from intensification.
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Timestamps
00:00 - Introduction02:08 - Prognostic vs. Predictive Biomarkers06:34 - The NRG/RTOG 0815 Biomarker Cohort10:15 - Applying a Low Genomic Score in Clinic15:16 - Genomic Classifiers After Prostatectomy18:52 - RTOG 9601, SPPORT and the Salvage Evidence24:39 - Stage Migration and the Case for an ARPI28:13 - Ordering and Reading the Genomic Report34:31 - Common Mistakes in Interpretation37:31 - Where Genomics Could Go Next41:03 - Reflex Testing, EMR Integration and AI44:44 - Closing Remarks
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More about this episode
The conversation covers practical application of test results, counseling with absolute risk numbers, and the pitfalls of stretching predictive claims beyond their evidence. Dr. Jia explains the limits of biopsy sampling, how stage migration with advanced imaging may shift baseline risk, and why a large portion of the genomic score remains unexplained by standard variables. The episode closes with a look at reflex testing, the potential role of AI, and the longer-term goal of giving patients clear, individualized benefit estimates for each treatment option.
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Resources
NRG/RTOG 0815: A Phase III Prospective Randomized Trial of Dose-Escalated Radiotherapy With or Without Short-Term Androgen Deprivation Therapy for Patients With Intermediate-Risk Prostate Cancer (trial record)https://clinicaltrials.gov/study/NCT00936390 NRG-GU006 (BALANCE): A Phase II Randomized Trial of Salvage Radiotherapy With or Without Apalutamide in Recurrent Prostate Cancer (trial record)https://clinicaltrials.gov/study/NCT03371719 Feng FY, et al. Validation of a 22-Gene Genomic Classifier in Patients With Recurrent Prostate Cancer: An Ancillary Study of the NRG/RTOG 9601 Randomized Clinical Trial. JAMA Oncol. 2021https://pubmed.ncbi.nlm.nih.gov/33570548/ Pollack A, et al. The addition of androgen deprivation therapy and pelvic lymph node treatment to prostate bed salvage radiotherapy (NRG Oncology/RTOG 0534 SPPORT). Lancet. 2022https://pubmed.ncbi.nlm.nih.gov/35569466/ Zhao SG, et al. Associations of Luminal and Basal Subtyping of Prostate Cancer With Prognosis and Response to Androgen Deprivation Therapy. JAMA Oncol. 2017https://pubmed.ncbi.nlm.nih.gov/28494073/ Patel KR, Nguyen PL, et al. Biopsy-based Basal-luminal Subtyping Classifier in High-risk Prostate Cancer: A Combined Analysis of the NRG Oncology/RTOG 9202, 9413 and 9902 Phase 3 Trials. Eur Urol Oncol. 2026https://pubmed.ncbi.nlm.nih.gov/39542826/ Grist E, et al. Tumor transcriptome-wide expression classifiers predict treatment sensitivity in advanced prostate cancers (STAMPEDE). Cell. 2025https://pubmed.ncbi.nlm.nih.gov/40865526/ Jia AY, et al. Cross-Comparison Individual Patient-Level Analysis of Three Gene Expression Signatures in Localized Prostate Cancer in Over 50,000 Men. JCO Precis Oncol. 2025https://pubmed.ncbi.nlm.nih.gov/40479622/ Dr. Angela Jia, University Hospitals physician profilehttps://www.uhhospitals.org/doctors/Jia-Angela-1902338718 Dr. Ruchika Talwar, BackTable Urology contributor pagehttps://www.backtable.com/shows/urology/contributors/dr-ruchika-talwar
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