pinometostat   Click here for help

GtoPdb Ligand ID: 7019

Synonyms: EPZ 5676 | EPZ-5676 | EPZ5676
PDB Ligand
Compound class: Synthetic organic
Comment: Pinometostat acts as a DOT1-like histone H3K79 methyltransferase (DOT1L) inhibitor that is being progressed through clinical evaluation in a collaboration between Cellgene and Epizyme, to evaluate its antileukemic efficacy in mixed-lineage leukemia (MLL)-rearranged leukemias. Link to Epizyme's pinometostat webpage here.
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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 9
Hydrogen bond donors 4
Rotatable bonds 9
Topological polar surface area 151.23
Molecular weight 562.34
XLogP 3.72
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 OC1C(CN(C2CC(C2)CCc2nc3c([nH]2)ccc(c3)C(C)(C)C)C(C)C)OC(C1O)n1cnc2c1ncnc2N
Isomeric SMILES O[C@@H]1[C@@H](CN([C@@H]2C[C@@H](C2)CCc2nc3c([nH]2)ccc(c3)C(C)(C)C)C(C)C)O[C@H]([C@@H]1O)n1cnc2c1ncnc2N
InChI InChI=1S/C30H42N8O3/c1-16(2)37(13-22-25(39)26(40)29(41-22)38-15-34-24-27(31)32-14-33-28(24)38)19-10-17(11-19)6-9-23-35-20-8-7-18(30(3,4)5)12-21(20)36-23/h7-8,12,14-17,19,22,25-26,29,39-40H,6,9-11,13H2,1-5H3,(H,35,36)(H2,31,32,33)/t17-,19+,22-,25-,26-,29-/m1/s1
InChI Key LXFOLMYKSYSZQS-LURJZOHASA-N
No information available.
Summary of Clinical Use Click here for help
Pinometostat is being evaluated in Phase 1 clinical trial as a potential therapy for acute myeloid leukemia (AML) and acute lymphocytic leukemia (ALL).
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Rearrangement of the MLL gene and abberant methylation of lysine 79 of histone H3 are associated with some leukemias [1,3]. The histone lysine methyltransferase DOT1L has been shown to be involved in the development and maintenance of MLL-rearranged leukemias [1]. Pinometostat inhibits histone methylation (at H379K) by DOT1L. Treatment causes cell death and tumour regression in animal models with MLL rearrangements and due to its enhanced bio-availability, has potential for controlling abberant DOT1L activity in some human leukemias [2].