MST-188 (purified poloxamer 188)
MST-188 is an investigational agent, formulated using a purified form of poloxamer 188. Substantial research has demonstrated that poloxamer 188 has cytoprotective and hemorrheologic properties and inhibits inflammatory processes and thrombosis. We believe the pharmacologic effects of poloxamer 188 support the development of MST-188 in multiple clinical indications for diseases and conditions characterized by microcirculatory insufficiency (endothelial dysfunction and/or impaired blood flow). We are enrolling patients in EPIC, a pivotal phase 3 study of MST-188 in sickle cell disease. In addition, our MST-188 pipeline includes development programs in adjunctive thrombolytic therapy (e.g., acute limb ischemia, stroke), heart failure, and resuscitation (i.e., restoration of circulating blood volume and pressure) following major trauma.
POTENTIAL APPLICATIONS OF MST-188
We believe the pharmacodynamic properties of MST-188 (cytoprotective, hemorheologic, anti-inflammatory, antithrombotic/pro-fibrinolytic) enable it simultaneously to address, or prevent activation of, multiple biochemical pathways that can result in microcirculatory insufficiency, a multifaceted condition principally characterized by endothelial dysfunction and impaired blood flow. The microcirculation is responsible for the delivery of blood through the smallest blood vessels (arterioles and capillaries) embedded within tissues. A healthy endothelium is critical to a functional microcirculation. Without the regular delivery of blood and transfer of oxygen to tissue from the microcirculation, individual cells (in both the endothelium and tissue) are unable to maintain aerobic metabolism and, through a series of complex and interrelated events, eventually die. If microcirculatory insufficiency continues, the patient will suffer tissue necrosis, organ damage and, eventually, death.
EPIC’s study drug, MST-188, is a new class of drug that acts by attaching to the damaged surfaces of the cell membranes, potentially improving blood flow and oxygen delivery.
Improving blood flow and oxygen delivery may reduce the duration and severity of pain crises faced by sickle cell patients.