Entinostat.

Entinostat is an oral and selective class I HDAC inhibitor, with IC50s of 243 nM, 453 nM, and 248 nM for HDAC1, HDAC2, and HDAC3, respectively.
Entinostat is a member of the class of benzamides resulting from the formal condensation of the carboxy group of the pyridin-3-ylmethyl carbamate derivative of p-(aminomethyl)benzoic acid with one of the amino groups of benzene-1,2-diamine. It is an inhibitor of histone deacetylase isoform 1 (HDAC1) and isoform 3 (HDAC3). It has a role as an EC 3.5.1.98 (histone deacetylase) inhibitor, an antineoplastic agent and an apoptosis inducer. It is a member of pyridines, a carbamate ester, a substituted aniline, a primary amino compound and a member of benzamides. It derives from a 1,2-phenylenediamine.|Entinostat is under investigation for the treatment and other of Volunteers, Breast Cancer, Human Volunteers, and Normal Volunteers. Entinostat has been investigated for the treatment of Non-Small Lung Cancer, Epigenetic Therapy.|Entinostat is a synthetic benzamide derivative with potential antineoplastic activity. Entinostat binds to and inhibits histone deacetylase, an enzyme that regulates chromatin structure and gene transcription. This agent appears to exert dose-dependent effects in human leukemia cells including cyclin-dependent kinase inhibitor 1A (p21/CIP1/WAF1)-dependent growth arrest and differentiation at low drug concentrations; a marked induction of reactive oxygen species (ROS); mitochondrial damage; caspase activation; and, at higher concentrations, apoptosis. In normal cells, cyclin-dependent kinase inhibitor 1A expression has been associated with cell-cycle exit and differentiation.