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Stromal marker fibroblast activation protein drives outcome in T1 non-muscle invasive bladder cancer.
PLOS ONE ( IF 3.7 ) Pub Date : 2021-09-15 , DOI: 10.1371/journal.pone.0257195
Tim Muilwijk 1, 2 , Murat Akand 1, 2 , Sofie Daelemans 3, 4 , Koen Marien 3 , Yannick Waumans 3 , Mark Kockx 3 , Loïc Baekelandt 1 , Thomas Van den Broeck 1 , Frank Van der Aa 1 , Thomas Gevaert 1, 2, 5 , Steven Joniau 1
Affiliation  

Fibroblast activation protein-α (FAP) is a transmembrane peptidase and a surrogate marker for cancer-associated fibroblasts (CAFs). FAP has been linked to worse prognosis and therapy resistance in several cancers. We hypothesised that FAP might have a prognostic 3biomarker potential to stratify patients with high-grade (HG) T1 non-muscle-invasive bladder cancer (NMIBC). We selected 30 patients with HG T1 NMIBC that progressed to ≥T2 disease which were pair-matched based on CUETO progression score variables with 90 patients that did not progress. After revision a final cohort of 86 patients was retained. Slides were stained for FAP, the luminal marker GATA3 and the basal marker CK5. All HG T1 tumour regions of interest (ROIs) within each patient were annotated, analysed and scored using image analysis software. FAP expression in HG T1 ROIs was significantly higher in progressors vs. non-progressors and was prognostic for recurrence-free survival, progression-free survival, cancer-specific survival, and overall survival. FAP expression in HG T1 ROIs remained strongly prognostic for these outcomes in a bivariable model corrected for adequate BCG per FDA definition. Expression of GATA3 and CK5 did not differ between progressors vs. non-progressors, and were not prognostic for these outcomes. FAP might serve as an easily applicable prognostic biomarker to risk-stratify patients with HG T1 NMIBC if these results are prospectively validated in a larger series.

中文翻译:

基质标记成纤维细胞活化蛋白驱动 T1 非肌肉浸润性膀胱癌的结果。

成纤维细胞活化蛋白-α (FAP) 是一种跨膜肽酶,也是癌症相关成纤维细胞 (CAF) 的替代标志物。在几种癌症中,FAP 与较差的预后和治疗抵抗有关。我们假设 FAP 可能具有预后 3 生物标志物的潜力,可以对高级别 (HG) T1 非肌层浸润性膀胱癌 (NMIBC) 患者进行分层。我们选择了 30 名 HG T1 NMIBC 进展至≥T2 疾病的患者,这些患者根据 CUETO 进展评分变量与 90 名未进展的患者配对。修订后保留了 86 名患者的最终队列。对载玻片进行 FAP、管腔标记 GATA3 和基底标记 CK5 染色。使用图像分析软件对每位患者内的所有 HG T1 肿瘤感兴趣区域 (ROI) 进行注释、分析和评分。HG T1 ROI 中的 FAP 表达在进展者中显着高于非进展者,并且是无复发生存期、无进展生存期、癌症特异性生存期和总生存期的预后因素。HG T1 ROI 中的 FAP 表达在双变量模型中对这些结果仍然具有很强的预后作用,根据 FDA 的定义进行了足够的 BCG 校正。GATA3 和 CK5 的表达在进展者与非进展者之间没有差异,并且不是这些结果的预后。如果这些结果在更大的系列中得到前瞻性验证,FAP 可能作为一种易于应用的预后生物标志物来对 HG T1 NMIBC 患者进行风险分层。HG T1 ROI 中的 FAP 表达在双变量模型中对这些结果仍然具有很强的预后作用,根据 FDA 的定义进行了足够的 BCG 校正。GATA3 和 CK5 的表达在进展者与非进展者之间没有差异,并且不是这些结果的预后。如果这些结果在更大的系列中得到前瞻性验证,FAP 可能作为一种易于应用的预后生物标志物来对 HG T1 NMIBC 患者进行风险分层。HG T1 ROI 中的 FAP 表达在双变量模型中对这些结果仍然具有很强的预后作用,根据 FDA 的定义进行了足够的 BCG 校正。GATA3 和 CK5 的表达在进展者与非进展者之间没有差异,并且不是这些结果的预后。如果这些结果在更大的系列中得到前瞻性验证,FAP 可能作为一种易于应用的预后生物标志物来对 HG T1 NMIBC 患者进行风险分层。
更新日期:2021-09-15
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