Radotinib

**Semantic type:** Pharmacologic Substance

**Definition:** A second-generation tyrosine kinase inhibitor of Bcr-Abl fusion protein and the platelet-derived growth factor receptor (PDGFR), with potential antineoplastic activity. Upon administration, radotinib specifically inhibits the Bcr-Abl fusion protein, an abnormal enzyme expressed in Philadelphia chromosome positive chronic myeloid leukemia (CML) cells. In addition, this agent also inhibits PDGFR thereby blocking PDGFR-mediated signal transduction pathways. The inhibitory effect of radotinib on these specific tyrosine kinases may decrease cellular proliferation and inhibit angiogenesis. PDGFR, upregulated in many tumor cell types, is a receptor tyrosine kinase essential to cell migration and the development of the microvasculature.

**Synonyms:** - 4-Methyl-N-(3-(4-methylimidazol-1-yl)-5-trifluoromethylphenyl)-3-(4-(pyrazin-2-yl)pyrimidin-2-ylamino)benzamide - IY5511 - RADOTINIB