Expression of PD-L1 in renal cancer, prognostic features and clinical utility of its routine staining

The expression of PD-L1 in renal cell carcinoma (RCC) is associated with worse survival and prognostic clinical-pathological features. However, they seem to respond better to new therapeutic agents. Knowing the behavior of RCC according to the presence of PD-L1 has implications for medical counselin...

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Published inActas urológicas españolas (English ed.) Vol. 47; no. 5; pp. 271 - 278
Main Authors Massouh Skorin, R., Escovar la Riva, P., Gabler, F., Kirmayr, M., Khamis, T., Escobar, S., Díaz, A., Soto, L.
Format Journal Article
LanguageEnglish
Spanish
Published Spain Elsevier España, S.L.U 01.06.2023
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Summary:The expression of PD-L1 in renal cell carcinoma (RCC) is associated with worse survival and prognostic clinical-pathological features. However, they seem to respond better to new therapeutic agents. Knowing the behavior of RCC according to the presence of PD-L1 has implications for medical counseling and therapeutic approaches. To identify the presence of PD-L1 in renal tumor cells and analyze its association with patients’ prognostic factors, overall survival (OS) and cancer-specific survival (CSS). Retrospective analysis of RCC tissue samples, obtained between 2018 and 2021. Immunohistochemistry analysis with mouse monoclonal Anti PD-L1, clone 22C3. Definition of PD-L1 “positive” as a Tumor Proportion Score ≥1%. Comparison of prognostic factors according to the presence or absence of PD-L1, and univariate analysis for OS and CSS. 14% (n = 11) of the sample were PD-L1(+). Average age was 59 years. There were no statistically significant differences between PD-L1 status and TNM stages, nuclear grade and histology. PD-L1(+) had worse OS with a HR of 5.27 (CI: 1.1–23.7; P = .03) and CSS showed a unfavorable tendency for PD-L1(+) with a HR of 4.79 (CI: 0.79–28.95; P = .08). The prevalence of PD-L1 in RCC is considerable. In this study PD-L1(+) was associated with unfavorable OS and CSS. It seems reasonable to incorporate its routine use in RCC. La expresión de PD-L1 en el carcinoma de células renales (CCR) se asocia a tasas de supervivencia y características clínico-patológicas pronósticas peores. Sin embargo, estas parecen responder mejor ante nuevos agentes terapéuticos. Conocer el comportamiento del CCR según la presencia de PD-L1 tiene implicaciones sobre el asesoramiento de los pacientes y el abordaje terapéutico. Identificar la presencia de PD-L1 en las células tumorales renales y analizar su asociación con los factores pronósticos de los pacientes, la supervivencia global (SG) y la supervivencia cáncer-específica (SCE). Análisis retrospectivo a partir de muestras de tejido de CCR obtenidas entre 2018 y 2021. Estudio inmunohistoquímico con monoclonal de ratón anti PD-L1, clon 22C3. Se definió PD-L1 “positivo” como una puntuación de proporción tumoral ≥1%. Comparación de factores pronósticos según la presencia o ausencia de PD-L1, y análisis univariante para la SG y la SCE. Un 14% (n = 11) de la muestra era PD-L1(+). La edad media era de 59 años. No hubo diferencias estadísticamente significativas entre el estatus de PD-L1 y el estadio TNM, el grado nuclear y el tipo histológico. Los pacientes PD-L1(+) tuvieron peor SG con un HR de 5,27 (IC: 1,1–23,7; P = ,03) y la SCE mostró una tendencia desfavorable para PD-L1(+) con un HR de 4,79 (IC: 0,79–28,95; P = ,08). La prevalencia de PD-L1 en el CCR es considerable. En este estudio, PD-L1(+) se asoció con una SG y SCE desfavorables, lo que justifica incorporar su uso rutinario en el CCR.
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ISSN:2173-5786
2173-5786
DOI:10.1016/j.acuroe.2022.12.005