UNC 569 hydrochloride is a reversible and ATP-competitive inhibitor of Mer with an IC50 of 2.9 nM and a Ki of 4.3 nM. UNC 569 hydrochloride inhibits Axl and Tyro3 with IC50s of 37 nM and 48 nM, respectively. UNC 569 hydrochloride can be used in studies about acute lymphoblastic leukemia and atypical teratoid/rhabdoid tumors.

UNC 569 hydrochloride inhibits Mer phosphorylation levels with IC50 values of 141 nM and 193 nM in human B-ALL 697 and Jurkat cell lines, respectively. UNC 569 hydrochloride (1 µM) treatment effectively inhibits the activation of Mer and downstream signaling, including the PI3K/AKT and MAPK/ERK pathways. In ALL cell lines, UNC 569 hydrochloride (0.4 -2 µM) induces apoptosis and increases the levels of cleaved Caspase 3 and cleaved PARP[1].

In Leukemic zebrafish, UNC 569 hydrochloride (4 µM) induces more than 50% reduction in tumor burden compared with vehicle- and mock-treated fish[1]. UNC 569 hydrochloride has low systemic clearance (19.5 mL/min/kg), high volume of distribution (Vss of 5.83 L/kg), and good oral bioavailability (57%)[2].