U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS
This repository is under review for potential modification in compliance with Administration directives.

Details

Stereochemistry ACHIRAL
Molecular Formula C19H23N7O2
Molecular Weight 381.4316
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of AT-9283

SMILES

O=C(NC1CC1)NC2=CNN=C2C3=NC4=C(N3)C=CC(CN5CCOCC5)=C4

InChI

InChIKey=LOLPPWBBNUVNQZ-UHFFFAOYSA-N
InChI=1S/C19H23N7O2/c27-19(21-13-2-3-13)24-16-10-20-25-17(16)18-22-14-4-1-12(9-15(14)23-18)11-26-5-7-28-8-6-26/h1,4,9-10,13H,2-3,5-8,11H2,(H,20,25)(H,22,23)(H2,21,24,27)

HIDE SMILES / InChI

Description

AT-9283 was being developed by Astex Pharmaceuticals as a treatment for cancer and myelofibrosis. AT-9283 is an inhibitor of mitosis (cell division) and is the second most progressed drug candidate in the Astex portfolio of novel molecularly targeted cancer drugs. All of Astex’s current products have been discovered internally using its proprietary drug discovery approach. AT9283 is a potent inhibitor of the Aurora A and B kinases and has been shown to arrest tumour growth in a range of tumour models. Aurora kinases play a key role in mitotic checkpoint control in cell division. Both Aurora A and B are over-expressed in many human tumours and are believed to be excellent targets for anti-cancer therapy.

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
3.0 nM [IC50]
3.0 nM [IC50]
1.0 nM [IC50]
1.1 nM [IC50]
1.2 nM [IC50]
4.0 nM [IC50]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Unknown
Primary
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
19.1 ng/mL
6 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
42.9 ng/mL
13 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
25.4 ng/mL
9 mg/m² 1 times / day multiple, intravenous
AT-9283 plasma
Homo sapiens
4.7 ng/mL
1.5 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
1200 ng × h/mL
6 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
2910 ng × h/mL
13 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
1720 ng × h/mL
9 mg/m² 1 times / day multiple, intravenous
AT-9283 plasma
Homo sapiens
278 ng × h/mL
1.5 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
38254 ng × h/mL
500 mg 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
20956 ng × h/mL
567 mg 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
1653 ng × h/mL
51.3 mg 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
2984 ng × h/mL
67.7 mg 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
7.6 h
6 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
7.5 h
13 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens
7.8 h
9 mg/m² 1 times / day multiple, intravenous
AT-9283 plasma
Homo sapiens
13.4 h
1.5 mg/m² 72 times / hour multiple, intravenous
AT-9283 plasma
Homo sapiens

PubMed

Sample Use Guides

In Vivo Use Guide
Starting dose will be 40 mg/m2/day OR 30 mg/m2/day to be confirmed at registration. IV 24 hour continuous infusion Days 1 and 8 every three weeks
Route of Administration: Intravenous
In Vitro Use Guide
AT-9283 leads to a clear polyploid phenotype by inhibiting the activity of Aurora B kinase in HCT116 cells with IC50 of 30 nM. Furthermore, AT-9283 also produces the potent inhibition on HCT116 colony formation.