Open Access

Multiple microRNAs as biomarkers for early breast cancer diagnosis

  • Authors:
    • Ji Young Jang
    • Yeon Soo Kim
    • Kyung Nam Kang
    • Kyo Hyun Kim
    • Yu Jin Park
    • Chul Woo Kim
  • View Affiliations

  • Published online on: December 17, 2020     https://doi.org/10.3892/mco.2020.2193
  • Article Number: 31
  • Copyright: © Jang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

MicroRNA (miRNA or miR) is stably present in plasma. It has been reported that miRNA could be used for detecting cancer. Circulating miRNAs are being increasingly recognized as powerful biomarkers in a number of different pathologies, including in breast cancer. The aim of the current study was to establish and validate miRNA sets that are useful for the early diagnosis of breast cancer. Specifically, the current study intended to determine whether miRNA biomarkers were tumor‑specific and to statistically verify whether circulating miRNA analysis could be used for breast cancer diagnosis. In the present study, a total of nine candidate miRNA biomarkers were selected by examining reference miRNAs associated with the generation and progression of breast cancer to identify novel miRNAs that could be used to detect early breast cancer. A total of 226 plasma samples from patients with breast cancer were used. In addition, 146 plasma healthy samples were used as non‑cancer controls. These samples were divided into training and validation cohorts. The training cohort was used to identify a combination of miRNA that could detect breast cancer. The validation cohort was used to validate this combination of miRNA. Total RNAs were isolated from collected samples. A total of 9 miRNAs were quantified using reverse‑transcription quantitative PCR. A total of nine candidate miRNA expression levels were compared between patients with breast cancer and healthy controls. It was indicated that combinations of two or more of the nine miRNAs could detect breast cancer with higher accuracy than the use of a single biomarker. As a representative example, combinations of four miRNAs (miR‑1246+miR‑206+miR‑24+miR‑373) of the nine miRNAs had a sensitivity of 98%, a specificity of 96% and an accuracy of 97% for breast cancer detection in the validation cohort. The results of the present study suggest that multiple miRNAs could be used as potential biomarkers for early diagnosis of breast cancer. These biomarkers are expected to overcome limitations of mammography when used as an auxiliary diagnosis of mammography.
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February-2021
Volume 14 Issue 2

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Copy and paste a formatted citation
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Spandidos Publications style
Jang JY, Kim YS, Kang KN, Kim KH, Park YJ and Kim CW: Multiple microRNAs as biomarkers for early breast cancer diagnosis. Mol Clin Oncol 14: 31, 2021
APA
Jang, J.Y., Kim, Y.S., Kang, K.N., Kim, K.H., Park, Y.J., & Kim, C.W. (2021). Multiple microRNAs as biomarkers for early breast cancer diagnosis. Molecular and Clinical Oncology, 14, 31. https://doi.org/10.3892/mco.2020.2193
MLA
Jang, J. Y., Kim, Y. S., Kang, K. N., Kim, K. H., Park, Y. J., Kim, C. W."Multiple microRNAs as biomarkers for early breast cancer diagnosis". Molecular and Clinical Oncology 14.2 (2021): 31.
Chicago
Jang, J. Y., Kim, Y. S., Kang, K. N., Kim, K. H., Park, Y. J., Kim, C. W."Multiple microRNAs as biomarkers for early breast cancer diagnosis". Molecular and Clinical Oncology 14, no. 2 (2021): 31. https://doi.org/10.3892/mco.2020.2193