Vascular endothelial growth factor polymorphisms: role in response and toxicity of tyrosine kinase inhibitors

Susan A J Vaziri1, Jenny Kim, Mahrukh K Ganapathi

  • 1Taussig Cancer Institute - R40, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH, 44195, USA. vaziris@ccf.org

Insights

Targeting vascular endothelial growth factor (VEGF) with inhibitors is crucial for treating various cancers. Genetic variations in VEGF impact treatment outcomes and toxicity, paving the way for personalized cancer medicine.

Area of Science:

  • Oncology
  • Pharmacogenomics
  • Molecular Biology

Background:

  • Angiogenesis, the formation of new blood vessels, is essential for both normal tissue development and tumor growth.
  • Vascular Endothelial Growth Factor (VEGF) signaling is a critical pathway frequently dysregulated in tumors, driving neoangiogenesis.
  • Inhibiting VEGF signaling has led to approved therapies like bevacizumab and receptor tyrosine kinase inhibitors (TKIs) for several cancers.

Purpose of the Study:

  • To explore the role of genetic variability in VEGF and its receptors in cancer treatment.
  • To identify specific genetic markers that predict patient response and toxicity to anti-angiogenic therapies.
  • To highlight the potential for personalized medicine approaches in cancer treatment based on genetic profiles.

Main Methods:

  • Analysis of genetic variations, specifically single nucleotide polymorphisms (SNPs), within the VEGF pathway.
  • Correlation of identified SNPs with clinical outcomes, including treatment efficacy and adverse events.
  • Evaluation of treatment-induced hypertension in relation to specific VEGF genotypes.

Main Results:

  • Genotypic variations (SNPs) in VEGF and its receptors are associated with treatment outcomes in patients receiving anti-angiogenic therapies.
  • Specific SNPs in VEGF are linked to the development of hypertension as a side effect of angiogenesis inhibitor treatment.
  • These genetic markers offer insights into differential patient responses to VEGF-targeted drugs.

Conclusions:

  • Understanding genetic variability in the VEGF pathway is key to optimizing anti-angiogenic cancer therapy.
  • Identification of SNPs provides a basis for personalized medicine strategies to improve treatment efficacy and reduce toxicity.
  • Pharmacogenomic approaches utilizing VEGF SNPs can enhance the clinical management of cancers treated with angiogenesis inhibitors.

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