AC220 is a uniquely potent and selective inhibitor of FLT3 for the treatment of acute myeloid leukemia (AML).

Article Details

Citation

Zarrinkar PP, Gunawardane RN, Cramer MD, Gardner MF, Brigham D, Belli B, Karaman MW, Pratz KW, Pallares G, Chao Q, Sprankle KG, Patel HK, Levis M, Armstrong RC, James J, Bhagwat SS

AC220 is a uniquely potent and selective inhibitor of FLT3 for the treatment of acute myeloid leukemia (AML).

Blood. 2009 Oct 1;114(14):2984-92. doi: 10.1182/blood-2009-05-222034. Epub 2009 Aug 4.

PubMed ID
19654408 [ View in PubMed
]
Abstract

Activating mutations in the receptor tyrosine kinase FLT3 are present in up to approximately 30% of acute myeloid leukemia (AML) patients, implicating FLT3 as a driver of the disease and therefore as a target for therapy. We report the characterization of AC220, a second-generation FLT3 inhibitor, and a comparison of AC220 with the first-generation FLT3 inhibitors CEP-701, MLN-518, PKC-412, sorafenib, and sunitinib. AC220 exhibits low nanomolar potency in biochemical and cellular assays and exceptional kinase selectivity, and in animal models is efficacious at doses as low as 1 mg/kg given orally once daily. The data reveal that the combination of excellent potency, selectivity, and pharmacokinetic properties is unique to AC220, which therefore is the first drug candidate with a profile that matches the characteristics desirable for a clinical FLT3 inhibitor.

DrugBank Data that Cites this Article

Binding Properties
DrugTargetPropertyMeasurementpHTemperature (°C)
SorafenibFibroblast growth factor receptor 1Kd (nM)2800N/AN/ADetails
SorafenibPlatelet-derived growth factor receptor betaKd (nM)37N/AN/ADetails
SorafenibProto-oncogene tyrosine-protein kinase receptor RetKd (nM)13N/AN/ADetails
SorafenibRAF proto-oncogene serine/threonine-protein kinaseKd (nM)230N/AN/ADetails
SorafenibReceptor-type tyrosine-protein kinase FLT3Kd (nM)13N/AN/ADetails
SorafenibReceptor-type tyrosine-protein kinase FLT3IC 50 (nM)3.2N/AN/ADetails
SorafenibSerine/threonine-protein kinase B-rafKd (nM)540N/AN/ADetails
SorafenibVascular endothelial growth factor receptor 1Kd (nM)31N/AN/ADetails
SorafenibVascular endothelial growth factor receptor 2Kd (nM)59N/AN/ADetails
SorafenibVascular endothelial growth factor receptor 3Kd (nM)95N/AN/ADetails
SunitinibMacrophage colony-stimulating factor 1 receptorKd (nM)2N/AN/ADetails
SunitinibPlatelet-derived growth factor receptor alphaKd (nM)0.79N/AN/ADetails
SunitinibPlatelet-derived growth factor receptor betaKd (nM)0.075N/AN/ADetails
SunitinibReceptor-type tyrosine-protein kinase FLT3Kd (nM)0.47N/AN/ADetails
SunitinibReceptor-type tyrosine-protein kinase FLT3IC 50 (nM)9.9N/AN/ADetails
SunitinibVascular endothelial growth factor receptor 1Kd (nM)1.8N/AN/ADetails
SunitinibVascular endothelial growth factor receptor 2Kd (nM)1.5N/AN/ADetails
SunitinibVascular endothelial growth factor receptor 3Kd (nM)50N/AN/ADetails
TandutinibReceptor-type tyrosine-protein kinase FLT3Kd (nM)3N/AN/ADetails
TandutinibReceptor-type tyrosine-protein kinase FLT3IC 50 (nM)170N/AN/ADetails