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Microsatellite instability evaluation by automated microfluidic electrophoresis: an update
  1. Francesco Pepe1,
  2. Riccardo Smeraglio1,
  3. Davide Vacirca2,
  4. Umberto Malapelle1,
  5. Massimo Barberis2,
  6. Giancarlo Troncone1
  1. 1 Department of Public Health, University of Naples Federico II, Naples, Italy
  2. 2 Clinic Unit of Histopathology and Molecular Diagnostics, Istituto Europeo di Oncologia, Milan, Italy
  1. Correspondence to Professor Giancarlo Troncone, Department of Public Health, University of Naples Federico II, Naples, Italy; giancarlo.troncone{at}

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A significant proportion (∼15%) of colorectal cancer (CRC), either sporadic or arising in the setting of the hereditary non-polyposis colorectal carcinoma syndrome, features microsatellite instability (MSI). Five MSI loci, either mononucleotide or dinucleotide repeats (Bat25, Bat26, D2S123, D5S346 and D17S250), are included in the Bethesda panel and capillary electrophoresis represents the usual gold standard technique.1 Samples are classified as MSI-low (L) if only one locus is abnormal or as MSI-high (H) if alterations extend to two or more loci. In a study published in 2009 in the Journal of Clinical Pathology, Odenthal et al2 validated, on the 2100 Bioanalyzer (Agilent …

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  • Contributors FP and GT conceived the study and wrote the paper. MB and GT supervised the study. RS, DV and UM performed the experimental part.

  • Competing interests None.

  • Patient consent Obtained.

  • Ethics approval Institutional Review Board Carlo Romano.

  • Provenance and peer review Not commissioned; internally peer reviewed.