NCIt definition : A small molecule integrin receptor antagonist (IRA) with potential antineoplastic
activity. Upon administration, GLPG0187 binds to and blocks the activity of 5 RGD-integrin
receptor subtypes, including alphavbeta1, alphavbeta3, alphavbeta5, alphavbeta6 and
alpha5beta1. This may result in the inhibition of endothelial cell-cell interactions
and endothelial cell-matrix interactions, and the prevention of angiogenesis and metastasis
in tumor cells expressing these integrin receptors. Integrin receptors are transmembrane
glycoproteins expressed on the surface of tumor vessel endothelial cells and some
types of cancer cells, and play a crucial role in endothelial cell adhesion and migration.;