Abstract
Introduction: Myelodysplastic syndromes (MDSs) are associated with significant morbidity due to ineffective hematopoiesis. Given the limited number of drugs approved by the FDA, there is a need for new therapeutic options. Ezatiostat is a novel agent targeting oxidative stress via inhibition of glutathione S-transferase 1.Areas covered: Herein, the authors summarize the standard of care in order to build the framework for therapeutic advancements. The purpose of this paper is to review the body of preclinical and clinical research literature on the investigational agent ezatiostat hydrochloride (TLK199) for the treatment of MDSs. The article includes details of the pathophysiology, pharmacology, toxicity and efficacy of ezatiostat hydrochloride from controlled studies in patients with myelodysplasia.Expert opinion: MDS clonal heterogeneity and clonal architecture complexity has presented a significant technical challenge in developing effective therapies. Ezatiostat offers a unique and specific mechanism to improve the transfusion burden associated with myelodysplasia. Since it is tolerable as a monotherapy, combining ezatiostat with agents such as lenalidomide may have the most potential benefit.
Original language | English (US) |
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Pages (from-to) | 725-733 |
Number of pages | 9 |
Journal | Expert Opinion on Investigational Drugs |
Volume | 24 |
Issue number | 5 |
DOIs | |
State | Published - May 1 2015 |
Externally published | Yes |
Keywords
- Ezatiostat (Telentra (R) TLK199)
- Glutathione S-transferase pi antagonists and inhibitors
- Glutathione analogs and derivatives
- Jun N-terminal kinase inhibitor
- Myelodysplasia
ASJC Scopus subject areas
- Pharmacology (medical)
- Pharmacology