Mechanism of action
From the NCI Drug Dictionary: An orally available, selective, non-covalent Bruton’s tyrosine kinase (BTK) inhibitor with potential antineoplastic activity. Upon oral administration, BTK inhibitor LOXO-305 selectively and reversibly binds to BTK. This prevents both the activation of the B-cell antigen receptor (BCR) signaling pathway and BTK-mediated activation of downstream survival pathways, thereby inhibiting the growth of malignant B cells that overexpress BTK. Reversible binding of LOXO-305 may preserve antitumor activity in the presence of certain acquired resistance mutations, including C481 mutated BTK, and limit toxicity associated with inhibition of other non-BTK kinases.
- BRUIN: link to original article NCT03740529