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Expression and mutational status of PDGFR in thymic tumours

Michael Meister1, Philip Kahl, Thomas Muley

  • 1Translational Research Unit, Thoraxklinik-Heidelberg gGmbH, University of Heidelberg, Amalienstr. 5, 69126 Heidelberg, Germany. michael.meister@thoraxklinik-heidelberg.de

Anticancer Research
|October 23, 2009
PubMed
Abstract

Insights

Platelet-derived growth factor receptor A (PDGFRA) is a potential therapeutic target for thymic tumours. This study found PDGFRA protein expression in thymomas and thymic carcinomas, suggesting its role in these cancers.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Invasive non-resectable thymic tumours have poor response rates to current chemotherapy.
  • Novel therapeutic targets are needed for thymic epithelial tumours.

Purpose of the Study:

  • To investigate platelet-derived growth factor receptor A (PDGFRA) and PDGFRB as potential therapeutic targets in epithelial thymic tumours.

Main Methods:

  • Analyzed PDGFRA and PDGFRB protein expression in 36 thymic tumour samples (thymomas and thymic carcinomas) and 3 normal thymi.
  • Assessed mutational status of PDGFRA exons 12, 14, and 18.

Main Results:

  • PDGFRA protein was expressed in all thymoma subtypes and thymic carcinomas.
  • No mutations were identified in the analyzed PDGFRA exons.
  • PDGFRB protein was expressed in approximately one-third of the tumours.
  • PDGFRA and PDGFRB protein expression showed a slight positive correlation.

Conclusions:

  • PDGFRA is a potential therapeutic target for thymic tumours.
  • Further research into PDGFRA-targeted therapies for thymic malignancies is warranted.

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