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Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay

  • Authors:
    • Victoria Fung
    • Stan Kohlhardt
    • Patricia Vergani
    • Gregory J. Zardin
    • Norman R. Williams
  • View Affiliations / Copyright

    Affiliations: Department of Breast and Plastic Surgery, Sheffield Breast Center, Royal Hallamshire Hospital, S10 2JF Sheffield, UK, Department of Histopathology, Royal Hallamshire Hospital, S10 2JF Sheffield, UK, Division of Surgery and Interventional Science, University College London, WC1E 6AU London, UK
    Copyright: © Fung et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 755-762
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    Published online on: September 1, 2017
       https://doi.org/10.3892/mco.2017.1404
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Abstract

The aim of the present study was to assess the sensitivity, specificity and practicality of using a one‑step nucleic acid amplification (OSNA) assay during breast cancer staging surgery to predict and discriminate between at least 2 involved nodes and more than 2 involved nodes and facilitate the decision to provide axillary conservation in the presence of a low total axillary node tumour burden. A total of 700 consecutive patients, not treated with neo‑adjuvant chemotherapy, received intraoperative sentinel lymph node (SLN) analysis using OSNA for cT1‑T3 cN0 invasive breast cancer. Patients with at least one macrometastasis on whole‑node SLN analysis underwent axillary lymph node dissection (ALND). The total tumour load (TTL) of the macrometastatic SLN sample was compared with the non‑sentinel lymph node (NSLN) status of the ALND specimen using routine histological assessment. In total, 122/683 patients (17.9%) were found to have an OSNA TTL indicative of macrometastasis. In addition, 45/122 (37%) patients had NSLN metastases on ALND with a total positive lymph node burden exceeding the American College of Surgeons Oncology Group Z0011 trial threshold of two macrometastatic nodes. The TTL negative predictive value was 0.975 [95% confidence interval (CI), 0.962‑0.988]. The area under the curve for the receiver operating characteristic curve was 0.86 (95% CI, 0.81‑0.91), indicating that SLN TTL was associated with the prediction (and partitioning) of total axillary disease burden. OSNA identifies a TTL threshold value where, in the presence of involved SLNs, ALND may be avoided. This technique offers objective confidence in adopting conservative management of the axilla in patients with SLN macrometastases.
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Copy and paste a formatted citation
Spandidos Publications style
Fung V, Kohlhardt S, Vergani P, Zardin GJ and Williams NR: Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay. Mol Clin Oncol 7: 755-762, 2017.
APA
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G.J., & Williams, N.R. (2017). Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay. Molecular and Clinical Oncology, 7, 755-762. https://doi.org/10.3892/mco.2017.1404
MLA
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G. J., Williams, N. R."Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay". Molecular and Clinical Oncology 7.5 (2017): 755-762.
Chicago
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G. J., Williams, N. R."Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay". Molecular and Clinical Oncology 7, no. 5 (2017): 755-762. https://doi.org/10.3892/mco.2017.1404
Copy and paste a formatted citation
x
Spandidos Publications style
Fung V, Kohlhardt S, Vergani P, Zardin GJ and Williams NR: Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay. Mol Clin Oncol 7: 755-762, 2017.
APA
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G.J., & Williams, N.R. (2017). Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay. Molecular and Clinical Oncology, 7, 755-762. https://doi.org/10.3892/mco.2017.1404
MLA
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G. J., Williams, N. R."Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay". Molecular and Clinical Oncology 7.5 (2017): 755-762.
Chicago
Fung, V., Kohlhardt, S., Vergani, P., Zardin, G. J., Williams, N. R."Intraoperative prediction of the two axillary lymph node macrometastases threshold in patients with breast cancer using a one‑step nucleic acid cytokeratin‑19 amplification assay". Molecular and Clinical Oncology 7, no. 5 (2017): 755-762. https://doi.org/10.3892/mco.2017.1404
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