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Encequidar, also known as HM-30181, is an oral P-glycoprotein (P-gp) inhibitor developed to enhance the oral bioavailability of P-gp substrate drugs. Encequidar showed the highest potency (IC(50)=0.63nM) among several MDR1 inhibitors, including cycloporin A, XR9576, and GF120918, and effectively blocked transepithelial transport of paclitaxel in MDCK monolayers (IC(50)=35.4nM). Encequidar is currently under clinical trials.
AM-8508 is a potent and selective PI3Kδ inhibitor. AM-8508 showed good cellular potency (in vitro pAKT IC50 = 4.6 nM ). AM-8505 xhibited excellent HWB potency (HWB (pAKT) IC50 = 2.7 nM). AM-8508 inhibit KLH-specific antibodies in animal models, signifying its potential for the treatment of human inflammatory diseases. PI3Kα and PI3Kβ are ubiquitously expressed and play a role in cell growth, division, and survival.