1. Signaling Pathways
  2. Protein Tyrosine Kinase/RTK
  3. Itk


Itk (Interleukin-2-inducible T-cell kinase) is a Tec family tyrosine kinase that mediates signaling processes after T cell receptor engagement. Activation of Itk requires recruitment to the membrane via its pleckstrin homology domain, phosphorylation of Itk by the Src kinase, Lck, and binding of Itk to the SLP-76/LAT adapter complex. After activation, Itk phosphorylates and activates phospholipase C-gamma1 (PLC-gamma1), leading to production of two second messengers, DAG and IP3. IP3 and DAG stimulate the release of calcium ions from the endoplasmic reticulum and activate Protein Kinase C, respectively. In addition, Itk regulates the development of Th2 cells and their subsequent cytokine secretion, thereby modulating the immune response.

Studies have shown that ITK is involved in the pathogenesis of autoimmune diseases as well as in carcinogenesis. The loss of ITK or its activity either by mutation or by the use of inhibitors led to a beneficial outcome in experimental models of asthma, inflammatory bowel disease and multiple sclerosis among others. In humans, biallelic mutations in the ITK gene locus result in a monogenetic disorder leading to T cell dysfunction, etc. These findings put ITK in the strong focus as a target for drug development.

Itk Related Products (6):

Cat. No. Product Name Effect Purity
  • HY-11092
    BMS-509744 is a potent, selective and ATP competitive Itk inhibitor with an IC50 of 19 nM.
  • HY-109078
    Inhibitor 99.85%
    Vecabrutinib (SNS-062) is a potent, noncovalent BTK and ITK inhibitor, with Kd values of 0.3 nM and 2.2 nM, respectively. Vecabrutinib shows an IC50 of 24 nM for ITK.
  • HY-12680
    Inhibitor ≥99.0%
    PRN694 is an irreversible, highly selective and potent covalent interleukin-2-inducible T-cell kinase (ITK) and resting lymphocyte kinase (RLK) dual inhibitor with IC50s of 0.3 nM and 1.4 nM, respectively. PRN694 exhibits extended target residence time on ITK and RLK, enabling durable attenuation of effector cells in vitro and in vivo.
  • HY-108691
    Inhibitor 98.31%
    PF-06465469 is a covalent inhibitor of ITK with an IC50 of 2 nM.
  • HY-16984
    GNE-4997 is a potent and selective interleukin-2-inducible T-cell kinase (ITK) inhibitor with a Ki of 0.09 nM, and the correlation between the basicity of solubilizing elements in GNE-4997 and off-target antiproliferative effects reduces cytotoxicity.
  • HY-128726
    ITK inhibitor 2
    ITK inhibitor 2 is a interleukin-2-inducible T-cell kinase (ITK) inhibitor extracted from patent WO2011065402A1, compound 4, with an IC50 of 2 nM.
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