Non-kinase targets of protein kinase inhibitors

Nat Rev Drug Discov. 2017 Jun;16(6):424-440. doi: 10.1038/nrd.2016.266. Epub 2017 Mar 10.


Kinome-wide profiling platforms have comprehensively identified the relevant kinases that are targeted by numerous protein kinase inhibitors. However, recent projects have begun to discover non-kinase targets of kinase inhibitors. These non-kinase targets can contribute to the desired or undesired activities of inhibitors, or act as silent bystanders. As a full awareness of a drug's mechanism of action is crucial for the interpretation of results and for successful preclinical and clinical drug development, these discoveries highlight the importance of understanding the pharmacology of kinase inhibitors beyond the kinome. In this Review, I discuss kinase inhibitors for which non-kinase targets have been identified and the application of emerging techniques to validate drug-target engagement in intact cells.

Publication types

  • Review

MeSH terms

  • Animals
  • Drug Design*
  • Drug Evaluation, Preclinical / methods
  • Humans
  • Molecular Targeted Therapy*
  • Protein Kinase Inhibitors / adverse effects
  • Protein Kinase Inhibitors / pharmacology*
  • Protein Kinases / drug effects
  • Protein Kinases / metabolism


  • Protein Kinase Inhibitors
  • Protein Kinases