Circulating free DNA integrity and concentration as independent prognostic markers in metastatic breast cancer
PurposeNon-invasive blood-based molecular markers have been investigated for cancer diagnosis and prognosis. Circulating free or cell-free DNA (cfDNA) variables have been shown to be putative markers in breast cancer prognosis.MethodsHere, we investigated the potential prognostic ability of cfDNA co...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
[May 2018]
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| In: |
Breast cancer research and treatment
Year: 2018, Volume: 169, Issue: 1, Pages: 69-82 |
| ISSN: | 1573-7217 |
| DOI: | 10.1007/s10549-018-4666-5 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1007/s10549-018-4666-5
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| Author Notes: | Jie Cheng, Tim Holland-Letz, Markus Wallwiener, Harald Surowy, Katarina Cuk, Sarah Schott, Andreas Trumpp, Klaus Pantel, Christof Sohn, Andreas Schneeweiss, Barbara Burwinkel |
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| 245 | 1 | 0 | |a Circulating free DNA integrity and concentration as independent prognostic markers in metastatic breast cancer |c Jie Cheng, Tim Holland-Letz, Markus Wallwiener, Harald Surowy, Katarina Cuk, Sarah Schott, Andreas Trumpp, Klaus Pantel, Christof Sohn, Andreas Schneeweiss, Barbara Burwinkel |
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| 520 | |a PurposeNon-invasive blood-based molecular markers have been investigated for cancer diagnosis and prognosis. Circulating free or cell-free DNA (cfDNA) variables have been shown to be putative markers in breast cancer prognosis.MethodsHere, we investigated the potential prognostic ability of cfDNA concentration and cfDNA integrity (cfDI) in a study cohort of 268 patients by quantitative PCR. We compared cfDNA concentration and cfDI at baseline and after one cycle of therapy in metastatic breast cancer (MBC) patients.ResultsA significantly increased cfDI (P = 1.21E-7 for ALU and P = 1.87E-3 for LINE1) and decreased cfDNA concentration (P = 1.17E-3 for ALU and P = 1.60E-2 for LINE1) in both repetitive DNA elements after one cycle of therapy was observed. A multiple Cox regression model indicated that cfDI and cfDNA concentration can serve as independent prognostic markers in patients at baseline with HR (95% CI) of 0.70 (0.48-1.01) for ALU cfDI, 0.63 (0.44-0.92) for LINE1 cfDI, 2.44 (1.68-3.53) for ALU cfDNA concentration, and 2.12 (1.47-3.06) for LINE1 cfDNA concentration and after one cycle of therapy with HR (95% CI) of 0.59 (0.42-0.84) for ALU cfDI, 0.51 (0.36-0.74) for LINE1 cfDI, 1.59 (1.31-1.92) for ALU cfDNA concentration, and 1.30 (1.17-1.45) for LINE1 cfDNA concentration, respectively. By comparing integrated prediction error of different models, cfDNA variables were shown to improve the prognostic power of the CTC status.ConclusionsWe hereby show that cfDNA variables, especially in combination with other markers, can serve as attractive prognostic markers for MBC patients at baseline and during the systematic therapy. | ||
| 650 | 4 | |a Circulating DNA concentration | |
| 650 | 4 | |a Circulating DNA integrity | |
| 650 | 4 | |a Circulating tumor cells | |
| 650 | 4 | |a Metastatic breast cancer | |
| 650 | 4 | |a Prognostic marker | |
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