Prognostic value of somatostatin receptor subtype 2 expression in colorectal cancer

Regul Pept. 2005 Dec 15;132(1-3):23-6. doi: 10.1016/j.regpep.2005.08.001. Epub 2005 Aug 30.

Abstract

The clinical relevance of the somatostatin receptor subtype 2 (sst2) is well defined in neuroendocrine tumors but it is still a matter of debate whether its expression may have a role also in other tumors not arising from the neuroectoderm. We investigated the prognostic value of the expression levels of sst2 mRNA in a consistent group of patients affected by colorectal cancer. Survival analysis of cancer-related death showed that patients with a high sst2 mRNA expression had an unfavourable outcome (p=0.037) and a significantly shorter disease-free survival (p=0.008). Surprisingly, our findings suggest that sst2 gene overexpression is a feature of colorectal tumors that have a negative outlook; in addition, it may allow additional insight into conventional therapeutic approaches for more aggressive tumors, whose prognosis needs to be improved.

MeSH terms

  • Colorectal Neoplasms / genetics
  • Colorectal Neoplasms / metabolism*
  • Colorectal Neoplasms / mortality
  • Gene Expression
  • Humans
  • Prognosis
  • Proportional Hazards Models
  • RNA, Messenger / biosynthesis
  • RNA, Neoplasm / biosynthesis
  • Receptors, Somatostatin / biosynthesis*
  • Receptors, Somatostatin / genetics
  • Reverse Transcriptase Polymerase Chain Reaction
  • Survival Analysis

Substances

  • RNA, Messenger
  • RNA, Neoplasm
  • Receptors, Somatostatin
  • somatostatin receptor 2