RT Conference Proceedings T1 A phase II study investigating neoadjuvant atezolizumab in cisplatin-ineligible patients with muscle-invasive bladder cancer: Final analysis A1 Szabados, B. E. A1 Rodriguez-Vida, A. A1 Duran, I. A1 Crabb, S. J. A1 van-der-Heijden, M. S. A1 Pous, A. Font A1 Gravis, G. A1 Herranz, U. Anido A1 Protheroe, A. A1 Ravaud, A. A1 Maillet, D. A1 Mendez, M. J. A1 Suarez, C. A1 Linch, M. A1 Prendergast, A. A1 Tyson, C. A1 Mousa, K. A1 Castellano, D. A1 Powles, T. B. K1 Cisplatin K1 atezolizumab K1 Urinary Bladder Neoplasms K1 Muscles AB Background. ABACUS is a phase II single-arm study that evaluated the safety and efficacy of neoadjuvant atezolizumab in patients with muscle-invasive bladder cancer (MIBC) awaiting radical cystectomy (RC).Methods. This single arm, phase II study investigated two cycles of atezolizumab (1200mg given every 3 weeks) prior to RC in MIBC(T2-4aN0M0) (NCT02662309). The study included patients who were ineligible or refused neoadjuvant cisplatin-based chemotherapy and had transitional cell histology. Pathological complete response (pCR) was the primary endpoint. Adverse events (AEs) and surgical complications were assessed using CTCAE v4.03 and the Clavien-Dindo classification. PB Elsevier SN 0923-7534 YR 2020 FD 2020-11-01 LK https://hdl.handle.net/10668/25477 UL https://hdl.handle.net/10668/25477 LA en NO Szabados, B. E. Rodriguez-Vida, A. Duran, I., Crabb, S. J., van-der-Heijden, M. S., Pous, A. Font et al. A phase II study investigating neoadjuvant atezolizumab in cisplatin-ineligible patients with muscle-invasive bladder cancer: Final analysis. Ann. oncol.2020; (31);S1319 DS RISalud RD Apr 17, 2025