Evidence map›Paper›PMID 42821182›Full record

ArticleInternational urology and nephrology2026

Role of neoadjuvant chemotherapy in micropapillary urothelial carcinoma: a multi-institutional analysis from the Korean Bladder Cancer Research Group.

Jong Hoon Lee, Chung Un Lee, Wan Song, Hyun Hwan Sung, Joongwon Choi, Won Sik Ham, Won Sik Jang, Jieun Heo, Bum-Jin Lim, Bum Sik Hong and 11 more

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Article in International urology and nephrology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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21 authors.

Jong Hoon Lee *Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-Gu, Seoul, 06351, Korea.
Chung Un Lee *Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, Korea.
Wan SongDepartment of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-Gu, Seoul, 06351, Korea.
Hyun Hwan SungDepartment of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-Gu, Seoul, 06351, Korea.
Joongwon ChoiChung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong, Korea.
Won Sik HamYonsei University College of Medicine, Seoul, Korea.
Won Sik JangYonsei University College of Medicine, Seoul, Korea.
Jieun HeoYonsei University College of Medicine, Seoul, Korea.
Bum-Jin LimUlsan University Asan Medical Center, Seoul, Korea.
Bum Sik HongUlsan University Asan Medical Center, Seoul, Korea.
Ja Hyeon KuSeoul National University Hospital, Seoul, Korea.
Seung Hwan JeongSeoul National University Hospital, Seoul, Korea.
Jong Jin OhSeoul National University Bundang Hospital, Seongnam, Korea.
Tae Il NoKorea University College of Medicine, Seoul, Korea.
Ho Kyung SeoCenter for Urologic Cancer, National Cancer Center, Goyang, Korea.
Geehyun SongCenter for Urologic Cancer, National Cancer Center, Goyang, Korea.
Wook NamGangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
Jong Kil NamPusan National University Yangsan Hospital, School of Medicine, Pusan National University, Yangsan, Korea.
Kyung Hwan KimPusan National University Hospital, School of Medicine, Pusan National University, Busan, Korea.
Yun-Sok HaKyungpook National University School of Medicine, Daegu, Korea.
Byong Chang JeongDepartment of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-Ro, Gangnam-Gu, Seoul, 06351, Korea. bc2.jung@samsung.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe evaluated the association of neoadjuvant chemotherapy (NAC) with pathological downstaging and overall survival (OS) in patients with micropapillary urothelial carcinoma (MPUC) in a multi-institutional cohort.

methodsWe retrospectively analysed patients who underwent radical cystectomy for muscle-invasive bladder cancer between 2003 and 2024. Patients were classified as having pure urothelial carcinoma (UC) or MPUC, and baseline clinicopathological characteristics were compared between the groups. The primary endpoint was complete pathological response (pT0N0; ypT0N0 in NAC-treated patients) and the secondary endpoint was OS, evaluated using logistic regression, Kaplan-Meier, and Cox proportional-hazards analyses.

resultsAmongst 1634 patients, 88 (5.4%) had MPUC. NAC was administered to 26.6% of patients with pure UC and 23.9% of those with MPUC. The pT0N0 rate was higher with NAC in both groups (pure UC, 22.4% vs 8.0%; MPUC, 33.3% vs 6.0%). NAC was independently associated with pT0N0 in the pure UC group (odds ratio [OR] 3.36, 95% confidence interval [CI] 2.42-4.65) and, on univariable analysis, in the MPUC group (OR 7.87, 95% CI 2.02-30.62). However, OS did not differ significantly by NAC status in either subtype (log-rank P = 0.426 and P = 0.281), and MPUC histology was not independently associated with OS after multivariable adjustment (adjusted hazard ratio 0.87, 95% CI 0.61-1.25). The number of MPUC patients achieving pT0N0 was small (n = 11), limiting the statistical power of the survival analyses.

conclusionNeoadjuvant chemotherapy was associated with a higher pathological complete response rate in micropapillary urothelial carcinoma; however, whether this translates into an OS benefit remains unclear based on the available survival data. These survival findings should be regarded as exploratory and hypothesis-generating.

Indexed as

Micropapillary urothelial carcinomaMuscle-invasive bladder cancerNeoadjuvant chemotherapyRadical cystectomy

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.