- Guide to PHARMACOLOGY
Synonyms: CP-690,550 | CP-690550 | tasocitinib | Xeljanz®
tofacitinib is an approved drug (FDA (2012), EMA (2017))
Compound class: Synthetic organic
Comment: Tofacitinib is an orally active, Type-1 Janus kinase (JAK) inhibitor and it was first approved by the US FDA in 2012. Tofacitinib was originally described as a selective JAK3 inhibitor , but subsequent analysis has revealed it to be a pan-JAK inhibitor, with predominant JAK1 inhibition [3,5].
Ligand Activity Visualisation Charts
These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.✖
View more information in the IUPHAR Pharmacology Education Project: tofacitinib
|Like many first generation kinase inhibitors tofacitinib exhibits a high degree of broad kinome selectivity but is in reality a pan-JAK-inhibitor. Additional kinases inhibited by tofacitinib in biochemical and cellular assays are described in . Tofacitinib is also reported to exhibit immunosuppressive activity which prevents organ rejection in mice and primates .
Despite clinical efficacy in ulcerative colitis, tofacitinib did not show significant efficacy as an induction and maintenance therapy over placebo, in Crohn's disease patients (as evaluated in Phase 2 studies NCT01393626 and NCT01393899) .
|Selectivity at enzymes|
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