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Expert Opin Investig Drugs. 2011 Oct;20(10):1455-67. doi: 10.1517/13543784.2011.613822. Epub 2011 Sep 2.

Entinostat for treatment of solid tumors and hematologic malignancies.

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  • 1Instructor in Pediatrics, The University of Colorado School of Medicine, Department of Pediatrics and Children's Hospital Colorado, Center for Cancer and Blood Disorders, Box B115 TCH, 13123 East 16th Avenue, Aurora, CO 80045, USA.

Abstract

INTRODUCTION:

A key feature of malignant cells is inappropriate gene suppression resulting in uncontrolled proliferation, continued cell cycling and a lack of differentiation. Histone deacetylase inhibitors (HDACi) are an emerging class of antineoplastic agents that counteract this effect and thus permit re-expression of silenced genes. Entinostat is an emerging HDACi that has shown promise in multiple preclinical studies. Additionally, Phase I and II clinical trials have begun to demonstrate its potential as a well-tolerated agent with anti-tumor activity.

AREAS COVERED:

The pharmacokinetics, pharmacodynamics, mechanisms of action, safety and tolerability, and clinical trials of entinostat are reviewed. Sources for this review included all relevant, publicly available, entinostat-related peer-reviewed publications and meeting abstracts up to March 2011.

EXPERT OPINION:

Entinostat is a well-tolerated HDACi that demonstrates promising therapeutic potential in both solid and hematologic malignancies. Its efficacy does not appear directly dose-related, and as such, more relevant biomarkers are needed to adequately assess its activity. Future clinical trials will likely focus on its use in combination with other agents that are able to exploit the epigenetic changes rendered by deacetylase inhibition.

[PubMed - indexed for MEDLINE]
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