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1 "Ghee-Young Kwon"
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Original Article
Atezolizumab in Patients with Pretreated Urothelial Cancer: a Korean Single-Center, Retrospective Study
Joon Young Hur, Youjin Kim, Ghee-Young Kwon, Minyong Kang, Hyun Hwan Sung, Hwang Gyun Jeon, Byong Chang Jeong, Seong Il Seo, Seong Soo Jeon, Hyun Moo Lee, Su Jin Lee, Se Hoon Park
Cancer Res Treat. 2019;51(4):1269-1274.   Published online January 9, 2019
DOI: https://doi.org/10.4143/crt.2018.604
AbstractAbstract PDFPubReaderePub
Purpose
Treatment targeting immune checkpoint with programmed death-1 (PD-1)/programmed death-ligand 1 (PD-L1) inhibitors has demonstrated efficacy and tolerability in the treatment of metastatic urothelial carcinoma (mUC). We investigated the efficacy and safety of atezolizumab in mUC patients who failed platinum-based chemotherapy.
Materials and Methods
A retrospective study using the Samsung Medical Center cancer chemotherapy registry was performed on 50 consecutive patients with mUC treated with atezolizumab, regardless of their PD-L1(SP142) status, as salvage therapy after chemotherapy failure between May 2017 and June 2018. Endpoints included overall response rate (RR), progression-free survival (PFS), and safety.
Results
Among 50 patients, men constituted 76% and the median age was 68 years (range, 46 to 82 years). Twenty-three patients (46%) received atezolizumab as second-line therapy. PD-L1 (SP142) status IC0/1 and IC2/3 were found in 21 (42%) and 21 (42%) of patients, respectively; in eight patients (16%), PD-L1 (SP142) expression was not available. Atezolizumab was generally well tolerated, with pruritus and fatigue being the most commonly observed toxicities. As a result, partial response was noted in 20 patients (40%), with 12 (24%) stable diseases. RRwas higherin IC2/3 (62%) than in IC0/1 patients (24%, p=0.013). The median PFS was 7.4 months (95% confidence interval, 3.4 to 11.4 months). As expected, PFS also was significantly longer in IC2/3 patients than in IC0/1 (median, 12.7 vs. 2.1 months; p=0.005). PFS was not significantly influenced by age, sex, performance status, number of previous chemotherapy, site of metastases, or any of the baseline laboratory parameters.
Conclusion
In this retrospective study, atezolizumab demonstrated clinically efficacy and tolerability in unselected mUC patients who failed platinum-based chemotherapy.

Citations

Citations to this article as recorded by  
  • Real-world data of atezolizumab in patients with previously treated locally advanced or metastatic urothelial bladder cancer
    Rocío Díaz Acedo, Mercedes Galvan Banqueri, Silvia Artacho Criado, Eva María Fernández Parra, Rocío Jiménez Galán, Ana Isabel Gago Sánchez, Juan Francisco Marín Pozo, María José Martínez Bautista
    International Journal of Clinical Pharmacy.2024; 46(2): 382.     CrossRef
  • Subsequent Systemic Therapy following Platinum and Immune Checkpoint Inhibitors in Metastatic Urothelial Carcinoma
    Joohyun Hong, Hyun Hwan Sung, Byong Chang Jeong, Se Hoon Park
    Biomedicines.2022; 10(8): 2005.     CrossRef
  • Systemic treatment for advanced urothelial cancer: an update on recent clinical trials and current treatment options
    Inkeun Park, Jae Lyun Lee
    The Korean Journal of Internal Medicine.2020; 35(4): 834.     CrossRef
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