Digestive Diseases and Sciences

, Volume 53, Issue 9, pp 2359–2365

Mechanisms of Action and Resistance of Somatostatin Analogues for the Treatment of Hepatocellular Carcinoma: A Message Not Well Taken

  • Dimitrios N. Samonakis
  • George Notas
  • Nikolaos Christodoulakis
  • Elias A. Kouroumalis
Review Paper

DOI: 10.1007/s10620-007-0175-9

Cite this article as:
Samonakis, D.N., Notas, G., Christodoulakis, N. et al. Dig Dis Sci (2008) 53: 2359. doi:10.1007/s10620-007-0175-9

Abstract

Somatostatin (SST) acts as an inhibitory peptide of various secretory and proliferative processes. Apart from neuroendocrine tumors, where SST analogues have an established role, they have been tested in other tumors such as hepatocellular carcinoma (HCC) in the view of the fact that chemotherapy is not working. Several positive reports have been published. Approximately 40% of patients respond with improved survival and an impressive quality of life. A usual misunderstanding in trial designs is that, although SST is not a rescue drug, selection of patients is inappropriate, with mostly moribund patients being recruited. SST analogues do not seem to work in 60% of HCCs and this has been linked to the presence of SST receptors (SSTR) in the tumor, while several resistance mechanisms might be involved. Future management should engage more specific SST analogues targeted to a tumor with a known SSTR map. The use of somatostatin analogues as an adjunct therapy in combination with other treatment modalities should also be investigated.

Keywords

HCCOctreotideLanreotideSomatostatin receptorsNonsurgical

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Dimitrios N. Samonakis
    • 1
    • 2
  • George Notas
    • 1
    • 2
  • Nikolaos Christodoulakis
    • 1
    • 2
  • Elias A. Kouroumalis
    • 1
    • 2
  1. 1.Department of Gastroenterology & HepatologyUniversity Hospital of HeraklionHeraklion, CreteGreece
  2. 2.Liver Research Laboratory, School of MedicineUniversity of CreteHeraklion, CreteGreece