Osiris Reports Strong Efficacy for Grafix to Treat Diabetic Foot Ulcers

Osiris Therapeutics, Inc.

, reported today that its multi-center, randomized, controlled clinical trial comparing the safety and effectiveness of Grafix® to standard of care in patients with chronic diabetic foot ulcers had met the pre-specified stopping rules for overwhelming efficacy as determined by the data monitoring committee during a planned interim analysis. For the primary endpoint, 62% of patients receiving Grafix had complete wound closure compared to only 21% (p<0.0001) of patients who received conventional treatment for their wounds - a relative improvement of 191% and the largest ever reported from such a study. A total of 131 patients were enrolled with the interim analysis being conducted on the first 97 to complete the trial. The trial also reached statistical significance in favor of Grafix on all top-line secondary endpoints, demonstrating faster wound closure and a reduction in the number of treatments needed to achieve wound closure. In the crossover phase of the trial, patients whose wounds failed to close after 12 weeks of standard of care had an 80% closure rate when switched to Grafix. Importantly, patients randomized to receive standard of care were 74% more likely to experience an adverse event than those receiving Grafix (p=0.008). As a result, the blinded phase of the trial is being discontinued immediately and all patients randomized to the control arm will be offered treatment with Grafix.