Galunisertib

**Semantic type:** Pharmacologic Substance

**Definition:** An orally available, small molecule antagonist of the tyrosine kinase transforming growth factor-beta (TGF-b) receptor type 1 (TGFBR1), with potential antineoplastic activity. Upon administration, galunisertib specifically targets and binds to the kinase domain of TGFBR1, thereby preventing the activation of TGF-b-mediated signaling pathways. This may inhibit the proliferation of TGF-b-overexpressing tumor cells. Dysregulation of the TGF-b signaling pathway is seen in a number of cancers and is associated with increased cancer cell proliferation, migration, invasion and tumor progression.

**Synonyms:** - 4-(2-(6-Methylpyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)quinoline-6-carboxamide - GALUNISERTIB - LY-2157299 - LY2157299