Circulating tumor cells and breast cancer‑specific mutations in primary breast cancer

  • Authors:
    • Michal Mego
    • Marian Karaba
    • Tatiana Sedlackova
    • Juraj Benca
    • Gabriela Repiska
    • Lucia Krasnicanova
    • Jan Macuch
    • Gabriela Sieberova
    • Silvia Jurisova
    • Daniel Pindak
    • Katarina Kalavska
    • Jozef Mardiak
    • Gabriel Minarik
  • View Affiliations

  • Published online on: April 1, 2020     https://doi.org/10.3892/mco.2020.2026
  • Pages: 565-573
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Abstract

Circulating tumor cells (CTCs) play a pivotal role in tumor dissemination and progression, and are considered to be a critical part of the metastatic cascade. The aim of the present research article was to examine breast cancer‑specific mutations in primary breast cancer (PBC) using targeted resequencing. A total of 78 patients with PBC were enrolled into this translational study. Reverse transcription‑quantitative PCR assay for the expression of epithelial markers (CK19) or epithelial‑to‑mesenchymal transition (EMT)‑related genes (TWIST1, SNAIL1, SLUG and ZEB1) was applied for identification of CTCs prior to surgery. Total DNA was isolated from fresh frozen primary tumors. Sequencing was performed by Agilent SureSelect target enrichment and Illumina paired‑end sequencing on the MiSeq platform. The most commonly affected genes were TP53 (mutated in 21 tumors; 26.9%), followed by PIK3CA (mutated in 16 tumors; 20.5%) and BRCA1/2 (mutated in 7 tumors, BRCA1 n=2 and BRCA2 n=5; 9.0%). In our cohort, a significantly higher proportion of patients with epithelial CTCs harbored mutations in the BRCA1/2 genes in the tumor tissue. There were no mutations in specific genes associated with CTCs with the EMT phenotype. To the best of our knowledge, this study is the first to report a correlation between the presence of epithelial CTCs in the peripheral blood and mutations of the BRCA1/2 genes in primary tumor tissue.
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June-2020
Volume 12 Issue 6

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Spandidos Publications style
Mego M, Karaba M, Sedlackova T, Benca J, Repiska G, Krasnicanova L, Macuch J, Sieberova G, Jurisova S, Pindak D, Pindak D, et al: Circulating tumor cells and breast cancer‑specific mutations in primary breast cancer. Mol Clin Oncol 12: 565-573, 2020
APA
Mego, M., Karaba, M., Sedlackova, T., Benca, J., Repiska, G., Krasnicanova, L. ... Minarik, G. (2020). Circulating tumor cells and breast cancer‑specific mutations in primary breast cancer. Molecular and Clinical Oncology, 12, 565-573. https://doi.org/10.3892/mco.2020.2026
MLA
Mego, M., Karaba, M., Sedlackova, T., Benca, J., Repiska, G., Krasnicanova, L., Macuch, J., Sieberova, G., Jurisova, S., Pindak, D., Kalavska, K., Mardiak, J., Minarik, G."Circulating tumor cells and breast cancer‑specific mutations in primary breast cancer". Molecular and Clinical Oncology 12.6 (2020): 565-573.
Chicago
Mego, M., Karaba, M., Sedlackova, T., Benca, J., Repiska, G., Krasnicanova, L., Macuch, J., Sieberova, G., Jurisova, S., Pindak, D., Kalavska, K., Mardiak, J., Minarik, G."Circulating tumor cells and breast cancer‑specific mutations in primary breast cancer". Molecular and Clinical Oncology 12, no. 6 (2020): 565-573. https://doi.org/10.3892/mco.2020.2026