Cell-free DNA and neuromediators in detecting aggressive variant prostate cancer
BACKGROUND: Aggressive variant transformation in metastatic castration-resistant prostate cancer (mCRPC) represents an under-recognized phenomenon. There is an urgent need for non-invasive biomarkers to detect these variants and identify treatment alternatives. - METHODS: A prospective observational...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
September 10, 2018
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| In: |
Oncology research and treatment
Year: 2018, Volume: 41, Issue: 10, Pages: 627-633 |
| ISSN: | 2296-5262 |
| DOI: | 10.1159/000490618 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1159/000490618
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| Author Notes: | Jost von Hardenberg, Thomas S. Worst, Niklas Westhoff, Philipp Erben, Stefan Fuxius, Markus Müller, Christian Bolenz, Christel Weiss, Elmar Heinrich |
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| 245 | 1 | 0 | |a Cell-free DNA and neuromediators in detecting aggressive variant prostate cancer |c Jost von Hardenberg, Thomas S. Worst, Niklas Westhoff, Philipp Erben, Stefan Fuxius, Markus Müller, Christian Bolenz, Christel Weiss, Elmar Heinrich |
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| 520 | |a BACKGROUND: Aggressive variant transformation in metastatic castration-resistant prostate cancer (mCRPC) represents an under-recognized phenomenon. There is an urgent need for non-invasive biomarkers to detect these variants and identify treatment alternatives. - METHODS: A prospective observational pilot study in mCRPC patients receiving treatment with cabazitaxel (CAB) was conducted. Neuromediators were sequentially evaluated and their impact on disease endpoints calculated. Targeted next-generation sequencing (NGS) of cell-free DNA (cfDNA) was also performed in a highly pretreated subset of patients. - RESULTS: 23 patients were included. Estimated effects indicate that neuron-specific enolase (NSE) levels at baseline may be correlated with overall survival (NSE unit 18.3 ng/ml: HR1.262 (95% confidence interval (CI) 0.985-1.616)) and that chromogranin A (CGA) may be correlated with progression-free survival (CGA unit 98.1 ng/ml: HR1.341 (95% CI 1.011-1.778)). cfDNA analysis revealed mutations annotated in prostate cancer (PCA) and small cell cancers (SCC). 1 patient showed elevated neuromediators along with annotated mutations in PCA and SCC, potentially indicating aggressive variant cancer. In 3 patients KIT mutations (e.g. pM541L, pV654A) known to be tissue-based biomarkers with level 1 evidence for the treatment with imatinib and sunitinib were found. - CONCLUSIONS: Sequential analysis of neuromediators and targeted NGS of cfDNA provide insight for the estimation of tumor heterogeneity under therapy with CAB. | ||
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