04:03am Wednesday 13 December 2017

UTHealth researcher uses gene defect discovery to help cardiology patients

Colin M. Barker, M.D., assistant professor of cardiology at The University of Texas Health Science Center at Houston (UTHealth) and an attending physician at Memorial Hermann Heart & Vascular Institute

“Most people with cardiovascular disease are taking blood thinner medications such as Plavix but it turns out that 30 to 40 percent have a very common gene variant that reduces the effectiveness of these medications. That places them at a higher risk for developing blood clots after a procedure such as stenting,” said principal investigator Colin M. Barker, M.D., assistant professor of cardiology at The University of Texas Health Science Center at Houston (UTHealth) and an attending physician at Memorial Hermann Heart & Vascular Institute.

Results of the study are published in the Oct. 18, 2010 issue of the Journal of the American College of Cardiology: Cardiovascular Interventions.

Barker and researchers at the Scripps Translational Science Institute in La Jolla, Calif., enrolled 41 patients. In the 20 who had the gene variant, doubling the dose of the blood thinner clopidogrel (Plavix) resulted in a significant reduction in platelet reactivity (the process that leads to the formation of blood clots).

“This is an important study because the discovery moves the field of personalized medicine and patient-centered care a step further,” Barker said. “We are now studying this in larger, randomized, controlled clinical trials.”

The study was supported by the Clinical Translation Science Award National Institutes of Health/National Center for Research Resources/Scripps Translational Science Institute.

Barker’s clinical practice is at UT Physicians – Bellaire (713-486-5175).

Deborah M. Lake
Media Hotline: 713-500-3030


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