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J Am Coll Cardiol. 2006 Dec 19;48(12):2539-45. Epub 2006 Nov 28.

The novel phosphodiesterase inhibitor NM-702 improves claudication-limited exercise performance in patients with peripheral arterial disease.

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Department of Medicine, Harbor-UCLA Medical Center, Torrance, California 90502, USA.



The current study tested the hypothesis that NM-702 improves treadmill exercise performance in peripheral arterial disease patients with claudication-limited exercise performance.


Patients with claudication experience significant disability, owing to their exercise limitation. Therapeutic options to improve exercise performance in these patients are limited. NM-702 is a novel drug that inhibits phosphodiesterase as well as thromboxane A2 synthase.


This study was a randomized, multi-center, placebo-controlled, double-blind trial. Patients were randomized to receive 24 weeks of twice-daily treatment with either placebo (intent to treat population, n = 130), 4 mg NM-702 (n = 126), or 8 mg NM-702 (n = 130).


After 24 weeks of treatment, 8 mg NM-702 was associated with a statistically significant increased peak walking time on a graded treadmill as compared with placebo (p = 0.004). Peak walking time after 24 weeks was increased by 17.1 +/- 49.0% in the placebo arm, 22.1 +/- 60.1% in the 4-mg NM-702 arm, and 28.1 +/- 50.5% in the 8-mg NM-702 arm. NM-702 at the 8-mg dose for 24 weeks was associated with statistically significant improvements in the treadmill claudication onset time as compared with placebo. In addition, as compared with placebo, NM-702 improved the physical component and physical functioning scores of the Medical Outcomes Study 36-Item Short Form and the walking distance and stair climbing domains of the Walking Impairment Questionnaire. NM-702 was generally well tolerated, but adverse events typical of vasodilators were common.


NM-702 used for 24 weeks by patients with claudication was associated with improvements in laboratory- and ambulatory-based exercise performance.

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