ASCO 2026: Practice-Guiding Updates in Bladder and Kidney Cancer

In the newest episode of Oncology Decoded, hosts Manojkumar Bupathi, MD, MS; and Benjamin Garmezy, MD, discussed takeaways from the 2026 American Society of Clinical Oncology (ASCO) Annual Meeting that may guide clinical practice. Following their initial conversation on the most critical presentations in prostate cancer, Bupathi and Garmezy spoke about additional presentations that may influence decision-making in the clinic for patients with bladder cancer and kidney cancer.

Bupathi and Garmezy are executive cochairs of the Genitourinary Cancer Research Executive Committee at Sarah Cannon Research Institute (SCRI). Additionally, Bupathi is president and medical oncologist with Rocky Mountain Cancer Centers, specializing in solid tumors and genitourinary cancers. Garmezy is the associate director of genitourinary research for SCRI and a medical oncologist at SCRI Oncology Partners, specializing in genitourinary cancers.

They discussed the following presentations:

EV-302

Long-term data from the phase 3 EV-302/KEYNOTE-A39 trial (NCT04223856) showed that enfortumab vedotin-ejfv (Padcev) plus pembrolizumab (Keytruda) demonstrated a sustained overall survival (OS) benefit compared with platinum-based chemotherapy in the first-line treatment of patients with locally advanced or metastatic urothelial carcinoma.¹

With a median follow-up of 42.8 months, the median OS was 33.6 months (95% CI, 26.6-39.8) in the enfortumab vedotin arm vs 15.9 months (95% CI, 13.6-18.3) in the chemotherapy arm (HR, 0.53; 95% CI, 0.45-0.63). Additionally, the objective response rate (ORR) was 67.5% vs 44.2% in each respective arm.

Overall, the long-term data reinforced enfortumab vedotin plus pembrolizumab as a frontline standard of care for patients with locally advanced or metastatic urothelial carcinoma.

RAMPART

In the phase 3 RAMPART trial (NCT03288532), combining durvalumab (Imfinzi) with tremelimumab-actl (Imjudo) showed a statistically significant improvement in disease-free survival (DFS) vs active monitoring among patients with resected primary renal cell carcinoma, although no significant improvement was observed with durvalumab monotherapy.² According to the hosts, these findings may introduce some uncertainty surrounding the increased uptake of PD-L1 inhibitors in this patient population.

Data showed that durvalumab monotherapy reduced the risk of disease recurrence or death by 26%, although this improvement did not cross the prespecified threshold for statistical significance (HR, 0.74; 95% CI, 0.53-1.04; 1-sided P = .041). The 3-year DFS rates were 78% with durvalumab alone vs 72% with active monitoring.

References

1. Powles TB, van der Heijden MS, Bedke J, et al. Enfortumab vedotin plus pembrolizumab vs chemotherapy for previously untreated locally advanced or metastatic urothelial carcinoma: 3.5-year follow-up and response analyses from the phase 3 EV-302 study. J Clin Oncol. 2026;44(suppl 16):4507. doi:10.1200/JCO.2026.44.16_suppl.4507
2. Larkin JM, Powles T, Frangou E, et al. Durvalumab monotherapy versus active monitoring for resected primary renal cell carcinoma in RAMPART: an international, phase 3, randomized controlled trial. J Clin Oncol. 2026;44(suppl 17):LBA4511. doi:10.1200/JCO.2026.44.17_suppl.LBA4511