© 2007 European Society for Medical Oncology
symposium articles |
Advances in the treatment of gastrointestinal stromal tumours
1 Royal Marsden Hospital, The Royal Marsden NHS Foundation Trust, Sutton, UK
2 Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
* Correspondence to: I. Judson, Royal Marsden Hospital, The Royal Marsden NHS Foundation Trust, Sycamore House, Downs Road, Sutton, Surrey SM2 5PT, UK. Tel: +44-208-722-4303; Fax: +44-208-642-7979; E-mail: ian.judson{at}icr.ac.uk
Imatinib, a selective tyrosine kinase inhibitor, is currently the standard of care first-line treatment for unresectable or metastatic gastrointestinal stromal tumour (GIST), improving survival time and delaying disease progression in many patients. Nevertheless, primary and secondary (acquired) resistance to imatinib is a substantial problem in routine clinical practice. Sunitinib is an oral, multitargeted tyrosine kinase inhibitor that was approved for the treatment of imatinib-resistant or -intolerant GIST. In the pivotal phase III study, sunitinib provided substantial clinical benefits including disease control and superior survival versus placebo as second-line treatment. Treatment with sunitinib was reasonably well tolerated. The availability of sunitinib represents an important clinical advance in GIST management, providing physicians and patients with an effective therapy when resistance to imatinib develops.
Key words: GIST, imatinib, KIT, PDGFR, sunitinib