4.6 Article

CD4, CD20 and PD-L1 as Markers of Recurrence in Non-Muscle-Invasive Bladder Cancer

Journal

CANCERS
Volume 15, Issue 23, Pages -

Publisher

MDPI
DOI: 10.3390/cancers15235529

Keywords

bladder cancer; NMIBC; tumor microenvironment; immune cells; CD4; CD20; PD-L1

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The infiltration of CD4 and CD20 cells in the tumor microenvironment, as well as the expression of PD-L1 on tumor cells, independently affect the risk of bladder cancer recurrence. Patients with weak CD4 cell infiltration and severe CD20 cell infiltration belong to the low-risk recurrence group.
Introduction: A tumor microenvironment plays an important role in bladder cancer development and in treatment response. Purpose: The aim of the study was to assess how the components of the microenvironment affect tumor recurrence and to find the potential biomarkers for immunotherapy in NMIBC. Methods: The study group consisted of 55 patients with primary NMIBC. Immunohistochemistry was performed on sections of primary papillary urothelial carcinoma of the bladder. Cox proportional hazard multiple regression analysis was performed to characterize tumors with the highest probability of an unfavorable outcome. Results: Multivariate analysis confirmed that the CD4 (p = 0.001), CD20 (p = 0.008) and PD-L1 expressed on tumor cells (p = 0.01) were independently associated with the risk of recurrence of bladder cancer. Patients with weak CD4(+) cell infiltration (<4.6%) and severe CD20(+) infiltration (>10%) belong to the group with a lower risk of recurrence. The cancer in this group also frequently recurs after 12 months (p = 0.0005). Conclusions: The evaluation of CD4(+) and CD20(+) cells in the tumor microenvironment, in addition to PD-L1 on tumor cells, facilitates the determination of a group of patients with a low risk of recurrence.

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