Neurofibromatosis type 1-associated wild-type gastrointestinal stromal tumor treated with anti-IGF-1R monoclonal antibody

F. L. Day, J. Desai, C. L. Corless, M. C. Heinrich, J. Zalcberg

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Gastrointestinal stromal tumors lacking mutations in KIT or PDGFRα are known as wild type (WT) and are less responsive to imatinib. These WT tumors are hypothesized to be dependent on signaling through the insulin-like growth factor 1 receptor (IGF-1R). We report the case of a 29-year-old woman with neurofibromatosis type 1-associated WT GIST treated with an anti-IGF-1R monoclonal antibody. Treatment was ineffective, and the potential basis for lack of response is discussed in the context of IGF-1R expression levels measured within this patients' primary tumor. We suggest that future clinical trials of anti-IGF-1R therapies prospectively determine tumor IGF-1R expression levels for correlation with response to treatment.

Original languageEnglish (US)
Pages (from-to)S162-S164
JournalMedical Oncology
Volume28
Issue numberSUPPL. 1
DOIs
StatePublished - Dec 1 2011

Keywords

  • Gastrointestinal stromal tumor
  • Insulin-like growth factor
  • Insulin-like growth factor receptor type 1
  • Neurofibromatosis
  • Targeted therapy

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

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