Helmholtz Gemeinschaft

Search
Browse
Statistics
Feeds

miR-9-5p in nephrectomy specimens is a potential predictor of primary resistance to first-line treatment with tyrosine kinase inhibitors in patients with metastatic renal cell carcinoma

[thumbnail of Original Article]
Preview
PDF (Original Article) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB
[thumbnail of Supplementary Material]
Preview
PDF (Supplementary Material) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Item Type:Article
Title:miR-9-5p in nephrectomy specimens is a potential predictor of primary resistance to first-line treatment with tyrosine kinase inhibitors in patients with metastatic renal cell carcinoma
Creators Name:Ralla, B., Busch, J., Flörcken, A., Westermann, J., Zhao, Z., Kilic, E., Weickmann, S., Jung, M., Fendler, A. and Jung, K.
Abstract:Approximately 20-30% of patients with metastatic renal cell carcinoma (mRCC) in first-line treatment with tyrosine kinase inhibitors (TKIs) do not respond due to primary resistance to this drug. At present, suitable robust biomarkers for prediction of a response are not available. Therefore, the aim of this study was to evaluate a panel of microRNAs (miRNAs) in nephrectomy specimens for use as predictive biomarkers for TKI resistance. Archived formalin-fixed, paraffin embedded nephrectomy samples from 60 mRCC patients treated with first-line TKIs (sunitinib, n = 51; pazopanib, n = 6; sorafenib, n = 3) were categorized into responders and non-responders. Using the standard Response Evaluation Criteria in Solid Tumors, patients with progressive disease within 3 months after the start of treatment with TKI were considered as non-responders and those patients with stable disease and complete or partial response under the TKI treatment for at least 6 months as responders. Based on a miRNA microarray expression profile in the two stratified groups of patients, seven differentially expressed miRNAs were validated using droplet digital reverse-transcription quantitative real-time polymerase chain reaction (RT-qPCR) assays in the two groups. Receiver operating characteristic curve analysis and binary logistic regression of response prediction were performed. MiR-9-5p and miR-489-3p were able to discriminate between the two groups. MiR-9-5p, as the most significant miRNA, improved the correct prediction of primary resistance against TKIs in comparison to that of conventional clinicopathological variables. The results of the decision curve analyses, Kaplan-Meier analyses and Cox regression analyses confirmed the potential of miR-9-5p in the prediction of response to TKIs and the prediction of progression-free survival after the initiation of TKI treatment.
Keywords:Renal Cell Carcinoma, Metastasis, Tyrosine Kinase Inhibitors, Sunitinib, Primary Resistance, microRNAs, Prognostic Indicator
Source:Cancers
ISSN:2072-6694
Publisher:MDPI
Volume:10
Number:9
Page Range:321
Date:10 September 2018
Official Publication:https://doi.org/10.3390/cancers10090321
PubMed:View item in PubMed

Repository Staff Only: item control page

Downloads

Downloads per month over past year

Open Access
MDC Library