fedratinib   Click here for help

GtoPdb Ligand ID: 5716

Synonyms: Inrebic® | SAR302503 | TG-101348 | TG101348
Approved drug PDB Ligand
fedratinib is an approved drug (FDA (2019), EMA (2021))
Compound class: Synthetic organic
Comment: Fedratinib (TG‑101348) was initially reported as an orally active JAK2-FLT3 kinase inhibitor, with biological activity via JAK2 inhibition [6]. More recently, this compound has been discovered to function, in addition, as a BRD4 (bromodomain) inhibitor [2,4]. It is suggested that TG‑101348 be termed a dual kinase-bromodomain inhibitor. Fedratinib is been identified and officially approved as an alternative to the JAK1/2 inhibitor ruxolitinib for the treatment of primary and secondary myelofibrosis [1].
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 8
Hydrogen bond donors 3
Rotatable bonds 11
Topological polar surface area 116.86
Molecular weight 524.26
XLogP 4.26
No. Lipinski's rules broken 1
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Canonical SMILES Cc1cnc(nc1Nc1cccc(c1)S(=O)(=O)NC(C)(C)C)Nc1ccc(cc1)OCCN1CCCC1
Isomeric SMILES Cc1cnc(nc1Nc1cccc(c1)S(=O)(=O)NC(C)(C)C)Nc1ccc(cc1)OCCN1CCCC1
InChI InChI=1S/C27H36N6O3S/c1-20-19-28-26(30-21-10-12-23(13-11-21)36-17-16-33-14-5-6-15-33)31-25(20)29-22-8-7-9-24(18-22)37(34,35)32-27(2,3)4/h7-13,18-19,32H,5-6,14-17H2,1-4H3,(H2,28,29,30,31)
Bioactivity Comments
Fedratinib is active against wild type and mutationally activated JAK2 and FMS-like tyrosine kinase 3 (FLT3). It exhibits higher potency for JAK2 over the other Jamus kinase family members JAK1, JAK3 and TYK2.
Selectivity at enzymes
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
bromodomain containing 4 Hs Inhibitor Inhibition 6.8 pKd - 2
pKd 6.8 (Kd 1.64x10-7 M) [2]
Janus kinase 2 Primary target of this compound Hs Inhibitor Inhibition 8.5 pIC50 - 5-6
pIC50 8.5 (IC50 3x10-9 M) [5-6]
Janus kinase 1 Hs Inhibitor Inhibition 7.0 pIC50 - 5
pIC50 7.0 (IC50 1x10-7 M) [5]
tyrosine kinase 2 Hs Inhibitor Inhibition 6.8 pIC50 - 5
pIC50 6.8 (IC50 1.5x10-7 M) [5]
Janus kinase 3 Hs Inhibitor Inhibition 6.0 pIC50 - 5
pIC50 6.0 (IC50 1x10-6 M) [5]