Expression of podoplanin is a rare event in sporadic gastrointestinal stromal tumors and does not influence prognosis

Future Oncol. 2012 Jul;8(7):859-66. doi: 10.2217/fon.12.71.


Aims: Podoplanin overexpression is associated with worse prognosis in several human cancers. In gastrointestinal stromal tumors (GISTs) very few data on the expression of podoplanin exist, but it seems to be frequently overexpressed in pediatric/syndromic GISTs. We investigated podoplanin expression and its clinical relevance in a large series of sporadic GISTs.

Methods: Podoplanin expression was determined immunohistochemically in 145 sporadic adult GISTs. Aneuploidies of 1p36 and 1q25 were investigated using FISH, and KIT and PDGFRA genes were investigated by sequencing.

Results: Overexpression of podoplanin was observed in eight (5.6%) GISTs and no association with amplification of 1p36 or KIT or PDGFRA mutations was seen. The amount of podoplanin expression was not associated with clinical risk factors or patient survival.

Conclusion: Overexpression of podoplanin is a rare event in sporadic GISTs and is not associated with amplification of 1p36 or with KIT or PDGFRA mutations, which indicates limited pathobiological or clinical relevance.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged, 80 and over
  • Chromosomes, Human, Pair 1
  • Female
  • Gastrointestinal Neoplasms / genetics*
  • Gastrointestinal Neoplasms / metabolism*
  • Gastrointestinal Neoplasms / mortality
  • Gastrointestinal Stromal Tumors / genetics*
  • Gastrointestinal Stromal Tumors / metabolism*
  • Gastrointestinal Stromal Tumors / mortality
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Male
  • Membrane Glycoproteins / metabolism*
  • Middle Aged
  • Mutation
  • Prognosis
  • Proto-Oncogene Proteins c-kit / genetics
  • Receptor, Platelet-Derived Growth Factor alpha / genetics
  • Receptors, Platelet-Derived Growth Factor / genetics
  • Retrospective Studies
  • Survival Rate


  • Membrane Glycoproteins
  • PDPN protein, human
  • Proto-Oncogene Proteins c-kit
  • Receptor, Platelet-Derived Growth Factor alpha
  • Receptors, Platelet-Derived Growth Factor