Volume 31, Issue 4 pp. 438-445
Original Article

Clinical features and oncological outcomes of bladder cancer microsatellite instability

Shohei Nagakawa

Shohei Nagakawa

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Masaki Shiota

Corresponding Author

Masaki Shiota

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Correspondence

Masaki Shiota M.D., Ph.D., Department of Urology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.

Email: [email protected]

Search for more papers by this author
Dai Takamatsu

Dai Takamatsu

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Shigehiro Tsukahara

Shigehiro Tsukahara

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Takashi Mastumoto

Takashi Mastumoto

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Leandro Blas

Leandro Blas

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Junichi Inokuchi

Junichi Inokuchi

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Yoshihiro Oda

Yoshihiro Oda

Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
Masatoshi Eto

Masatoshi Eto

Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Search for more papers by this author
First published: 09 January 2024
Citations: 2

Abstract

Objectives

Excellent anticancer effect for solid tumors with microsatellite instability (MSI)-high by anti-PD-1 antibody has been reported. In this study, we investigated the clinical impact of MSI status in bladder cancer.

Methods

This study included 205 Japanese patients who underwent transurethral resection for bladder cancer between 2005 and 2021. The prevalence rates of microsatellite stable (MSS), MSI-low (MSI-L), and MSI-high (MSI-H) were determined using molecular testing. We examined the association of MSI status (MSS versus MSI-L/H) with clinicopathological characteristics and oncological outcomes.

Results

MSI-L/H tumors were associated with higher T-category in non-muscle invasive bladder cancer (NMIBC). Additionally, MSI-L/H tumors were associated with a higher risk of intravesical recurrence in NMIBC patients treated with intravesical bacillus Calmette-Guérin (BCG) but not with non-BCG therapy.

Conclusions

This study suggested that the MSI status might serve as a predictive marker for intravesical recurrence after BCG intravesical therapy in NMIBC and highlighted an unmet need for an alternative treatment in patients with MSI-L/H tumors.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.