PMID- 37909969 OWN - NLM STAT- MEDLINE DCOM- 20231102 LR - 20231102 IS - 1791-7530 (Electronic) IS - 0250-7005 (Linking) VI - 43 IP - 11 DP - 2023 Nov TI - Second-line Pembrolizumab for Metastatic Urothelial Carcinoma: Differences in Treatment Outcomes According to the Primary Site. PG - 5041-5050 LID - 10.21873/anticanres.16703 [doi] AB - BACKGROUND/AIM: To evaluate the difference in the clinical efficacy and safety of pembrolizumab between patients with metastatic upper tract urothelial carcinoma (UTUC), which includes renal pelvic urothelial carcinoma (UC) and ureteral UC, and those with metastatic lower tract urothelial carcinoma (LTUC). PATIENTS AND METHODS: A total of 752 patients who received pembrolizumab for the treatment of chemoresistant UC were retrospectively analyzed. We compared progression-free survival (PFS), overall survival (OS) and adverse events (AEs) in patients with renal pelvic UC, ureteral UC, and LTUC. RESULTS: The median follow-up period was 42.5 [interquartile range (IQR)=35.1-47.4] months. The primary tumor site was in the upper tract in 362 (48.1%) patients [renal pelvis, n=219 (60.5%); ureter, n=143 (39.5%)] and in the lower tract in 390 (51.9%) patients. The estimated glomerular filtration rate before pembrolizumab treatment in the UTUC group was significantly lower than that in the LTUC group (p<0.001). The median PFS in the UTUC and LTUC groups was 3.4 months, respectively (p=0.271). The median OS in the UTUC and LTUC groups was 10.1 months and 11.7 months, respectively (p=0.195). In an analysis of UTUC divided into renal pelvic UC, ureteral UC, and LTUC, patients with renal pelvic UC had a significantly poorer prognosis in comparison to the other two groups (p=0.041). The incidence of any-grade AEs (51.7% vs. 47.9%, p=0.343) and grade >/=3 AEs (12.2% vs. 12.8%, p=0.826) in the two groups was not statistically significantly different. CONCLUSION: No significant differences were found between the UTUC and LTUC groups with regard to the oncological outcomes and safety of pembrolizumab. Patients with renal pelvic UC had a significantly poorer prognosis than those with other ureteral UCs and LTUCs. CI - Copyright (c) 2023 International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. FAU - Nishiyama, Naotaka AU - Nishiyama N AD - Department of Urology, Faculty of Medicine, University of Toyama, Toyama, Japan. FAU - Kita, Yuki AU - Kita Y AD - Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan. FAU - Ito, Katsuhiro AU - Ito K AD - Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan. FAU - Kato, Minoru AU - Kato M AD - Department of Urology, Osaka Metropolitan University, Osaka, Japan. FAU - Hatakeyama, Shingo AU - Hatakeyama S AD - Department of Urology, Hirosaki University, Aomori, Japan. FAU - Matsushita, Yuto AU - Matsushita Y AD - Department of Urology, Hamamatsu University School of Medicine, Shizuoka, Japan. FAU - Naito, Sei AU - Naito S AD - Department of Urology, Yamagata University Faculty of Medicine, Yamagata, Japan. FAU - Miyake, Makito AU - Miyake M AD - Department of Urology, Nara Medical University, Nara, Japan. FAU - Nakanishi, Shotaro AU - Nakanishi S AD - Department of Urology, University of the Ryukyus, Okinawa, Japan. FAU - Kato, Yoichiro AU - Kato Y AD - Department of Urology, Iwate Medical University, Iwate, Japan. FAU - Shibuya, Tadamasa AU - Shibuya T AD - Department of Urology, Oita University, Oita, Japan. FAU - Hayashi, Tetsutaro AU - Hayashi T AD - Department of Urology, Hiroshima University, Hiroshima, Japan. FAU - Yasumoto, Hiroaki AU - Yasumoto H AD - Department of Urology, Shimane University, Shimane, Japan. FAU - Yoshida, Takashi AU - Yoshida T AD - Department of Urology and Andrology, Kansai Medical University, Osaka, Japan. FAU - Uemura, Motohide AU - Uemura M AD - Department of Urology, Osaka University, Osaka, Japan. FAU - Taoka, Rikiya AU - Taoka R AD - Department of Urology, Kagawa University, Kagawa, Japan. FAU - Nishiyama, Hiroyuki AU - Nishiyama H AD - Department of Urology, University of Tsukuba, Tsukuba, Japan. FAU - Kobayashi, Takashi AU - Kobayashi T AD - Department of Urology, Kyoto University Graduate School of Medicine, Kyoto, Japan; selecao@kuhp.kyoto-u.ac.jp. FAU - Kitamura, Hiroshi AU - Kitamura H CN - Japan Urological Oncology Group LA - eng PT - Journal Article PL - Greece TA - Anticancer Res JT - Anticancer research JID - 8102988 RN - DPT0O3T46P (pembrolizumab) SB - IM MH - Humans MH - *Carcinoma, Transitional Cell/drug therapy MH - *Urinary Bladder Neoplasms MH - Retrospective Studies MH - Treatment Outcome MH - *Kidney Neoplasms/drug therapy MH - *Ureteral Neoplasms OTO - NOTNLM OT - Chemo-resistant urothelial carcinoma OT - lower tract urothelial carcinoma OT - pembrolizumab OT - upper tract urothelial carcinoma EDAT- 2023/11/01 12:44 MHDA- 2023/11/02 12:42 CRDT- 2023/11/01 10:44 PHST- 2023/07/19 00:00 [received] PHST- 2023/09/13 00:00 [revised] PHST- 2023/09/14 00:00 [accepted] PHST- 2023/11/02 12:42 [medline] PHST- 2023/11/01 12:44 [pubmed] PHST- 2023/11/01 10:44 [entrez] AID - 43/11/5041 [pii] AID - 10.21873/anticanres.16703 [doi] PST - ppublish SO - Anticancer Res. 2023 Nov;43(11):5041-5050. doi: 10.21873/anticanres.16703.