Molecular alterations associated with liver metastases development in colorectal cancer patients

S. C. Bruin, Y. He, I. Mikolajewska-Hanclich, G. J. Liefers, C. Klijn, A. Vincent, V. J. Verwaal, K. A. De Groot, H. Morreau, M. L.F. Van Velthuysen, R. A.E.M. Tollenaar, L. J. Van't Veer

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27 Citations (Scopus)


Background:Understanding the molecular biology of colorectal cancer (CRC) provides opportunities for effective personalised patient management. We evaluated whether chromosomal aberrations, mutations in the PI(3)K signalling pathway and the CpG-island methylator phenotype (CIMP) in primary colorectal tumours can predict liver metastases.Methods:Formalin-fixed paraffin-embedded material from primary colorectal tumours of three different groups were investigated: patients with CRC without metastases (M0, n39), patients who were treated with hyperthermal intraperitoneal chemotherapy for CRC metastases confined to the peritoneum (PM, n46) and those who had isolated hepatic perfusion for CRC metastases confined to the liver (LM, n48).Results:All samples were analysed for DNA copy number changes, PIK3CA, KRAS, BRAF mutations, CIMP and microsatellite instability. The primary CRCs of the LM group had significantly higher frequency of amplified chromosome 20q (P=0.003), significantly fewer mutations in the PI(3)K signalling pathway (P=0.003) and fewer CIMP high tumours (P=0.05). There was a strong inverse correlation between 20q and the PI(3)K pathway mutations.Conclusion:The development of CRC liver metastases is associated with amplification of chromosome 20q and not driven by mutations in the PI(3)K signalling pathway.

Original languageEnglish
Pages (from-to)281-287
Number of pages7
JournalBritish Journal of Cancer
Issue number2
Publication statusPublished or Issued - 12 Jul 2011
Externally publishedYes


  • KRAS
  • PI(3)K signalling pathway
  • PIK3CA
  • chromosome 20q
  • colorectal cancer
  • liver metastases

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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