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Ref Type Journal Article
PMID (25763473)
Authors Liu Y, Lang Y, Patel NK, Ng G, Laufer R, Li SW, Edwards L, Forrest B, Sampson PB, Feher M, Ban F, Awrey DE, Beletskaya I, Mao G, Hodgson R, Plotnikova O, Qiu W, Chirgadze NY, Mason JM, Wei X, Lin DC, Che Y, Kiarash R, Madeira B, Fletcher GC, Mak TW, Bray MR, Pauls HW
Title The Discovery of Orally Bioavailable Tyrosine Threonine Kinase (TTK) Inhibitors: 3-(4-(heterocyclyl)phenyl)-1H-indazole-5-carboxamides as Anticancer Agents.
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Abstract Text The acetamido and carboxamido substituted 3-(1H-indazol-3-yl)benzenesulfonamides are potent TTK inhibitors. However, they display modest ability to attenuate cancer cell growth; their physicochemical properties, and attendant pharmacokinetic parameters, are not drug-like. By eliminating the polar 3-sulfonamide group and grafting a heterocycle at the 4 position of the phenyl ring, potent inhibitors with oral exposure were obtained. An X-ray cocrystal structure and a refined binding model allowed for a structure guided approach. Systematic optimization resulted in novel TTK inhibitors, namely 3-(4-(heterocyclyl)phenyl)-1H-indazole-5-carboxamides. Compounds incorporating the 3-hydroxy-8-azabicyclo[3.2.1]octan-8-yl bicyclic system were potent (TTK IC50 < 10 nM, HCT116 GI50 < 0.1 μM), displayed low off-target activity (>500×), and microsomal stability (T(1/2) > 30 min). A subset was tested in rodent PK and mouse xenograft models of human cancer. Compound 75 (CFI-401870) recapitulated the phenotype of TTK RNAi, demonstrated in vivo tumor growth inhibition upon oral dosing, and was selected for preclinical evaluation.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
CFI-401870 CFI-401870 0 0
Drug Name Trade Name Synonyms Drug Classes Drug Description
CFI-401870 MPS1 Inhibitor 27 CFI-401870 is an inhibitor of TTK (MPS1), which inhibits cell proliferation (PMID: 25763473).
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References