title: Small-molecule kinase inhibitors: an analysis of FDA-approved drugs.
abstract: Small-molecule kinase inhibitors (SMKIs), 28 of which are approved by the US Food and Drug Administration (FDA), have been actively pursued as promising targeted therapeutics. Here, we assess the key structural and physicochemical properties, target selectivity and mechanism of function, and therapeutic indications of these approved inhibitors. Our analysis showed that >30% of approved SMKIs have a molecule weight (MW) exceeding 500 and all have a total ring count of between three and five. The assumption that type II inhibitors tend to be more selective than type I inhibitors has been proved to be unreliable. Although previous SMKI research was concentrated on tyrosine kinase inhibitors for cancer treatment, recent progress indicates diversification of SMKI research in terms of new targets, mechanistic types, and therapeutic indications.
authors.affiliation: Department of Chemistry, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark. Electronic address: penwu@kemi.dtu.dk.
authors.forename: Peng
authors.initials: P
authors.lastname: Wu
authors.affiliation: Protein and Peptide Chemistry, Novo Nordisk A/S, Måløv DK-2760, Denmark.
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Nielsen
authors.affiliation: Department of Chemistry, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark; Center for Nanomedicine and Theranostics, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark.
authors.forename: Mads H
authors.initials: MH
authors.lastname: Clausen
mesh_terms: D017277:Drug Approval / Q000379:methods; D015507:Drugs, Investigational / Q000627:therapeutic use*; D006801:Humans; D008970:Molecular Weight; D047428:Protein Kinase Inhibitors / Q000627:therapeutic use*; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D015507:Drugs, Investigational; D047428:Protein Kinase Inhibitors