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New Drug No Substitute for Standard Blood-Clot Therapy
Date:9/12/2007

t 4 percent for those on a placebo. However, those who received an additional six months of idraparinux had a higher incidence of bleeding complications -- 3.1 percent versus 0.9 percent for those on a placebo.

"The long duration of action for idraparinux is a benefit, but it's also a hazard, because there's no antidote," said Dr. Edward L. Amorosi, a hematologist at the New York University Medical Center.

"It appears to be a more effective anti-thrombotic for DVT, but it's not safe enough to make it standard treatment," he added.

Buller said that Sanofi-Aventis is conducting research on pulmonary embolism treatment with a newer version of idraparinux, and that results should be available within a year. The new trial should help answer the question of whether or not the findings in the current pulmonary embolism trial were a statistical anomaly or not, he said.

More information

To learn more about blood clots, visit the U.S. National Library of Medicine.



SOURCES: Harry Buller, M.D., professor and chairman, department of vascular medicine, Academic Medical Center, Amsterdam, the Netherlands; Edward L. Amorosi, M.D., hematologist, New York University Medical Center's Clinical Cancer Center, and associate professor, New York University School of Medicine, New York City; Sept. 13, 2007, New England Journal of Medicine


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