Valentis has announced that no statistically significant difference was seen in the primary endpoint or any of the secondary endpoints in its Phase IIb clinical trial of VLTS 934 in peripheral arterial disease (PAD). The primary efficacy endpoint in the study was improvement in exercise tolerance on an escalating grade treadmill after 90 days in patients receiving VLTS 934 versus patients receiving placebo. The trial was a randomized, double-blind, placebo-controlled Phase IIb trial of VLTS 934 versus a saline placebo in 157 patients with the intermittent claudication form of PAD.

After 90 days, there was no statistically significant change in exercise in the 78 patients receiving VLTS 934 versus the 79 patients receiving placebo. There were also no significant differences in any of the secondary endpoints of exercise tolerance at 30 days, ankle-brachial index at 30 and 90 days, total work capacity at 30 and 90 days and quality of life at 90 days. VLTS 934 was well-tolerated in the trial with no definitely related severe adverse effects.