NCIt definition : A small molecule inhibitor of Bruton's tyrosine kinase (BTK; Bruton agammaglobulinemia
tyrosine kinase) with potential antineoplastic activity. Upon administration, orelabrutinib
binds to and inhibits the activity of BTK. This prevents both the activation of the
B-cell antigen receptor (BCR) signaling pathway and BTK-mediated activation of downstream
survival pathways, inhibiting the growth of malignant B-cells that overexpress BTK.
BTK, a member of the Src-related BTK/Tec family of cytoplasmic tyrosine kinases, is
overexpressed or mutated in B-cell malignancies; it plays an important role in the
development, activation, signaling, proliferation and survival of B-lymphocytes.;
UNII : WJA5UO9E10;
InChIKey : MZPVEMOYADUARK-UHFFFAOYSA-N;
CAS number : 1655504-04-3; a href https://gsrs.ncats.nih.gov/ginas/app/beta/browse-substance?search 1655504-04-3
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