avapritinib   Click here for help

GtoPdb Ligand ID: 10368

Synonyms: Ayvakit® | Ayvakyt® | BLU-285 | BLU285
Approved drug PDB Ligand Immunopharmacology Ligand
avapritinib is an approved drug (FDA & EMA (2020))
Compound class: Synthetic organic
Comment: Avapritinib (BLU-285) was developed by Blueprint Medicines as an oral precision therapy to selectively and potently inhibit KIT and PDGFRA mutant kinases [3]. It is a Type I kinase inhibitor that binds the active kinase conformation. Avapritinib binds to the 'switch pocket' of KIT, a domain that regulates the enzyme's catalytic conformation. Compounds that act in this way are often referred to as switch control inhibitors [1]. Another such switch control inhibitor is ripretinib.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 8
Hydrogen bond donors 1
Rotatable bonds 5
Topological polar surface area 106.29
Molecular weight 498.24
XLogP 4.21
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES Fc1ccc(cc1)C(c1cnc(nc1)N1CCN(CC1)c1ncnn2c1cc(c2)c1cnn(c1)C)(N)C
Isomeric SMILES Fc1ccc(cc1)[C@@](c1cnc(nc1)N1CCN(CC1)c1ncnn2c1cc(c2)c1cnn(c1)C)(N)C
InChI InChI=1S/C26H27FN10/c1-26(28,20-3-5-22(27)6-4-20)21-13-29-25(30-14-21)36-9-7-35(8-10-36)24-23-11-18(16-37(23)33-17-31-24)19-12-32-34(2)15-19/h3-6,11-17H,7-10,28H2,1-2H3/t26-/m0/s1
InChI Key DWYRIWUZIJHQKQ-SANMLTNESA-N
Immunopharmacology Comments
A constitutively active mutant KIT (typically D816V) is present in 90-95% of cases of systemic mastocytosis and drives disease pathogenesis. The multi-kinase inhibitor midostaurin is currently the only approved treatment for advanced/aggressive systemic mastocytosis [4]. Avapritinib was designed to directly target the active conformation of KIT, so as to potently and selectively inhibit KITD816V and other activation loop mutants [3] that confer resistance to early generation kinase inhibitors such as imatinib.