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Dampening Enthusiasm for Circulating MicroRNA in Breast Cancer

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  • Rom S Leidner
  • Li Li
  • Cheryl L Thompson

Abstract

Genome-wide platforms for high-throughput profiling of circulating miRNA (oligoarray or miR-Seq) offer enormous promise for agnostic discovery of circulating miRNA biomarkers as a pathway for development in breast cancer detection. By harmonizing data from 15 previous reports, we found widespread inconsistencies across prior studies. Whether this arises from differences in study design, such as sample source or profiling platform, is unclear. As a reproducibility experiment, we generated a genome-wide plasma miRNA dataset using the Illumina oligoarray and compared this to a publically available dataset generated using an identical sample size, substrate and profiling platform. Samples from 20 breast cancer patients, 20 mammography-screened controls, as well as 20 breast cancer patients after surgical resection and 10 female lung or colorectal cancer patients were included. After filtering for miRNAs derived from blood cells, and for low abundance miRNAs (non-detectable in over 10% of samples), a set of 522 plasma miRNAs remained, of which 46 were found to be differentially expressed between breast cancer patients and healthy controls (p

Suggested Citation

  • Rom S Leidner & Li Li & Cheryl L Thompson, 2013. "Dampening Enthusiasm for Circulating MicroRNA in Breast Cancer," PLOS ONE, Public Library of Science, vol. 8(3), pages 1-11, March.
    • Handle: RePEc:plo:pone00:0057841
    DOI: 10.1371/journal.pone.0057841
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