Abstract
Aim: To evaluate the utility of a multigene real-time reverse transcriptase polymerase chain reaction (RT-PCR) assay to detect circulating tumor cells in peripheral blood specimens of breast cancer patients during or after treatment.
Method: Using this assay, peripheral blood samples were analyzed for expression levels of mammaglobin and three complementary transcribed breast cancer-specific genes: B305D, γ-aminobutyrate type A receptor π subunit (GABA π; GABRP), and B726P. We examined 172 blood specimens from 82 breast cancer patients during or after therapy for the presence of circulating tumor cells using the multigene real-time RT-PCR assay.
Results: In 63.4% of the blood samples, a positive signal for mammaglobin and/or three breast cancer-associated gene transcripts was detected. Of breast cancer patients, 75.6% had at least one positive blood sample. Blood specimens from 51 of 53 healthy female volunteers tested negative in the assay whereas two samples had a low expression signal. In addition, three patients were monitored for more than a year during their adjuvant therapy treatment.
Conclusion: This assay could be a valuable tool for monitoring breast cancer patients during and after therapy.
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Acknowledgements
This study was supported in part by NIH grants CA-75794 and CA-86673.
The authors have no conflicts of interest that are directly relevant to the content of this study.
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Zehentner, B.K., Secrist, H., Hayes, D.C. et al. Detection of Circulating Tumor Cells in Peripheral Blood of Breast Cancer Patients During or After Therapy Using a Multigene Real-Time RT-PCR Assay. Mol Diag Ther 10, 41–47 (2006). https://doi.org/10.1007/BF03256441
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DOI: https://doi.org/10.1007/BF03256441