Acalabrutinib

**Semantic type:** Pharmacologic Substance

**Definition:** An orally available inhibitor of Bruton's tyrosine kinase (BTK) with potential antineoplastic activity. Upon administration, acalabrutinib inhibits the activity of BTK and prevents the activation of the B-cell antigen receptor (BCR) signaling pathway. This prevents both B-cell activation and BTK-mediated activation of downstream survival pathways. This leads to an inhibition of 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 in B-cell malignancies; it plays an important role in B lymphocyte development, activation, signaling, proliferation and survival.

**Synonyms:** - ACALABRUTINIB - ACP 196 - ACP-196 - ACP196 - Benzamide, 4-(8-Amino-3-((2S)-1-(1-oxo-2-butyn-1-yl)-2-pyrrolidinyl)imidazo(1,5-a)pyrazin-1-yl)-N-2-pyridinyl- - Bruton Tyrosine Kinase Inhibitor ACP-196