Molecular subtype conversion between primary and metastatic breast cancer corresponding to the dynamics of apoptotic and intact circulating tumor cells
The presence of circulating tumor cells (CTCs), detected as a form of liquid biopsy is associated with poor survival in both early and metastatic breast cancer. Monitoring tumor biology based on intrinsic subtypes delivers treatment-relevant information on the heterogeneity or biomarker conversion b...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
11 March 2019
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| In: |
Cancers
Year: 2019, Jahrgang: 11, Heft: 3 |
| ISSN: | 2072-6694 |
| DOI: | 10.3390/cancers11030342 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/cancers11030342 Verlag, kostenfrei: https://www.mdpi.com/2072-6694/11/3/342 
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| Verfasserangaben: | Stefan Stefanovic, Thomas M. Deutsch, Ralph Wirtz, Andreas Hartkopf, Peter Sinn, Florian Schuetz, Christof Sohn, Michael K. Bohlmann, Marc Sütterlin, Andreas Schneeweiss and Markus Wallwiener |
MARC
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| 520 | |a The presence of circulating tumor cells (CTCs), detected as a form of liquid biopsy is associated with poor survival in both early and metastatic breast cancer. Monitoring tumor biology based on intrinsic subtypes delivers treatment-relevant information on the heterogeneity or biomarker conversion between primary and metastatic tumors. This study aimed to correlate the change of the apoptotic and intact CTC counts with mRNA-assessed intrinsic subtype change. Thirty-four breast cancer patients with available triplets of primary tumors, distant metastasis biopsies and data on intact and apoptotic CTC dynamics were included in the analysis. The intrinsic subtype was determined per RT-qPCR quantification of the gene expression ESR1, PGR, ERBB2 and MKI67. Both luminal (p = 0.038) and triple negative (p = 0.035) patients showed a significant downregulation of apoptotic CTCs. Repeated biopsies of distant metastatic sites, as well as determining a potential shift of the intrinsic subtype, combined with data on intact and apoptotic CTC dynamics from liquid biopsies might help personalize systemic therapy and generate additional surrogate markers for successful systemic therapy. | ||
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