Belizatinib

**Semantic type:** Pharmacologic Substance

**Definition:** An orally available inhibitor of both the receptor tyrosine kinase anaplastic lymphoma kinase (ALK) and the tropomyosin-related kinases (TRK) TRKA, TRKB, and TRKC, with potential antineoplastic activity. Upon oral administration, belizatinib binds to and inhibits both ALK and TRK kinases. The inhibition leads to disruption of ALK- and TRK-mediated signaling and impedes tumor cell growth in ALK/TRK-overexpressing tumor cells. ALK belongs to the insulin receptor superfamily and plays an important role in nervous system development; ALK dysregulation and gene rearrangements are associated with a series of tumors. TRK, a family of receptor tyrosine kinases activated by neurotrophins, is mutated in a variety of cancer cell types and plays an important role in tumor cell growth and survival.

**Synonyms:** - ALK/TRK Inhibitor TSR-011 - BELIZATINIB - TSR 011 - TSR-011 - TSR011