mRNA-expression of KRT5 and KRT20 defines distinct prognostic subgroups of muscle-invasive urothelial bladder cancer correlating with histological variants
Recently, muscle-invasive bladder cancer (MIBC) has been subclassified by gene expression profiling, with a substantial impact on therapy response and patient outcome. We tested whether these complex molecular subtypes of MIBC can be determined by mRNA detection of keratin 5 (KRT5) and keratin 20 (K...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
30 October 2018
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| In: |
International journal of molecular sciences
Year: 2018, Volume: 19, Issue: 11, Pages: 1-14 |
| ISSN: | 1422-0067 |
| DOI: | 10.3390/ijms19113396 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.3390/ijms19113396 Verlag, kostenfrei, Volltext: https://www.mdpi.com/1422-0067/19/11/3396 
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| Author Notes: | Markus Eckstein, Ralph Markus Wirtz, Matthias Gross-Weege, Johannes Breyer, Wolfgang Otto, Robert Stoehr, Danijel Sikic, Bastian Keck, Sebastian Eidt, Maximilian Burger, Christian Bolenz, Katja Nitschke, Stefan Porubsky, Arndt Hartmann and Philipp Erben |
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| 245 | 1 | 0 | |a mRNA-expression of KRT5 and KRT20 defines distinct prognostic subgroups of muscle-invasive urothelial bladder cancer correlating with histological variants |c Markus Eckstein, Ralph Markus Wirtz, Matthias Gross-Weege, Johannes Breyer, Wolfgang Otto, Robert Stoehr, Danijel Sikic, Bastian Keck, Sebastian Eidt, Maximilian Burger, Christian Bolenz, Katja Nitschke, Stefan Porubsky, Arndt Hartmann and Philipp Erben |
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| 520 | |a Recently, muscle-invasive bladder cancer (MIBC) has been subclassified by gene expression profiling, with a substantial impact on therapy response and patient outcome. We tested whether these complex molecular subtypes of MIBC can be determined by mRNA detection of keratin 5 (KRT5) and keratin 20 (KRT20). Reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) was applied to quantify gene expression of KRT5 and KRT20 using TaqMan®-based assays in 122 curatively treated MIBC patients (median age 68.0 years). Furthermore, in silico analysis of the MD Anderson Cancer Center (MDACC) cohort (GSE48277 + GSE47993) was performed. High expression of KRT5 and low expression of KRT20 were associated with significantly improved recurrence-free survival (RFS) and disease-specific survival disease specific survival (DSS: 5-year DSS for KRT5 high: 58%; 5-year DSS for KRT20 high: 29%). KRT5 and KRT20 were associated with rates of lymphovascular invasion and lymphonodal metastasis. The combination of KRT5 and KRT20 allowed identification of patients with a very poor prognosis (KRT20+/KRT5−, 5-year DSS 0%, p < 0.0001). In silico analysis of the independent MDACC cohorts revealed congruent results (5-year DSS for KRT20 low vs. high: 84% vs. 40%, p = 0.042). High KRT20-expressing tumors as well as KRT20+/KRT− tumors were significantly enriched with aggressive urothelial carcinoma variants (micropapillary, plasmacytoid, nested). | ||
| 650 | 4 | |a <i>KRT20</i> | |
| 650 | 4 | |a <i>KRT5</i> | |
| 650 | 4 | |a Bladder cancer | |
| 650 | 4 | |a molecular diagnostics | |
| 650 | 4 | |a molecular subtyping | |
| 650 | 4 | |a muscle-invasive bladder cancer | |
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