HER2-Inhibitor-1

ARRY-380 is an orally bioavailable, potent, selective, small-molecule tyrosine kinase HER2 and p95-HER2 inhibitor with an IC50 of 8 and 7 nM, respectively. However, ARRY-380 inhibits EGFR with an IC50 of 4 μM. ARRY-380 is about 500-fold selective for HER2 versus EGFR. ARRY-380 produces significantly antitumor activities in multiple HER2-dependent tumor xenograft models and generates additive activity in combination with standard-of-care agents. ARRY-380 is in a phase I clinical trial for the treatment of breast cancer