News | September 06, 2011

Mesoblast Announces Clearance for European Trial of Revascor Cardiac Stem Cell Product

September 6, 2011 — Mesoblast Ltd. announced it received clearance from the European Medicines Agency (EMA) to begin a 225-patient multi-center Phase 2 European clinical trial for Revascor, its lead cardiovascular product. The study is being conducted in conjunction with angioplasty and stent procedures to gauge ability to prevent heart failure after a major heart attack.

Revascor is an allogeneic, or "off-the-shelf", adult stem cell product derived from Mesoblast's proprietary mesenchymal precursor cell (MPC) platform technology. It is being developed for use in a range of cardiovascular diseases including congestive heart failure, chronic angina, and heart attacks (acute myocardial infarction).

The placebo-controlled Phase 2 trial, AMICI (Allogeneic Mesenchymal precursor cell Infusion in myoCardial Infarction), is approved under Europe's voluntary harmonization procedure. It will initially recruit patients at multiple European sites, including in the United Kingdom, The Netherlands and Belgium. Trial recruitment is subsequently expected to involve sites in additional European nations, Australia, and the United States.

The primary endpoint of the study will be safety and efficacy at six months in heart attack patients who will receive either Revascor at one of two doses, or placebo. Durability of effect will additionally be monitored for up to 36 months.

Heart attacks remain the biggest killer of people in the industrialized world. Every year, more than 1.7 million people have a heart attack in Europe, and more than 1.1 million in the United States.

Most of these patients undergo an early angioplasty of the blocked artery accompanied by implantation of a metal stent to keep the artery open long-term. However, a significant number of the surviving patients subsequently become disabled with heart failure.

The treatment is injected by a simple intracoronary infusion at the same time as the angioplasty and stent procedure, within 12 hours of the heart attack. In preclinical trials, the infusion increased blood vessels in the infarcted region, prevented scar formation, and significantly improved heart muscle function after a heart attack, preventing heart failure.

"The preclinical data were very compelling, and formed the basis for this innovative clinical trial," said the study's principal investigator, Prof. Eric Duckers, M.D., Ph.D., interventional cardiologist, head of molecular cardiology and associate professor, Thoraxcenter, Erasmus University Hospital in The Netherlands.

"We are excited to be pioneering a novel and minimally invasive clinical approach that has the potential to greatly improve the quality of life for patients suffering acute heart attacks," Duckers added.

The U.K.'s lead investigator, Jonathan Hill, M.D., consultant interventional cardiologist at King's College Hospital and King's Health Partners Academic Health Sciences Centre, said: "This stem cell product has the potential to change the medical paradigm for treatment of large heart attacks, and to provide for the first time a validated and effective off-the-shelf therapy for routine use."

For more information: www.mesoblast.com

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