Peripheral Vascular Diseases Clinical Trial
Official title:
The Genetic Determinants of Peripheral Arterial Disease
Atherosclerosis, a condition in which fatty deposits build up along the inner walls of arteries, can occur throughout the body. The purpose of this study is to examine the possible genetic differences that may influence where atherosclerosis occurs.
Plaque build-up caused by atherosclerosis increases the risk of blood clots, heart attack,
and stroke. Blockages of plaque can occur in different areas of the body. PAD, a circulatory
disorder in which blockages occur in the peripheral arteries, is one manifestation of
atherosclerosis. Individuals with PAD experience reduced blood flow to the legs, which may
cause leg pain while walking. Coronary artery disease (CAD), in which plaque builds up in
arteries leading to the heart, is another atherosclerosis-related condition. Individuals
with PAD and CAD have similar atherosclerosis risk factors, but it remains unknown why some
individuals develop one disease and not the other. Genetic differences may influence where
atherosclerosis develops. The goal of the study is to identify genetic variations that may
cause inherited differences in plaque distribution.
This study will enroll individuals with PAD who have been referred by their doctor for a
coronary angiogram to confirm the presence of CAD. A control group composed of individuals
who do not have PAD, but have similar risk factors for atherosclerosis, will also be
enrolled. All participants will attend one study visit. They will undergo a coronary
angiogram, a procedure in which a special dye is inserted intravenously into an artery of
the heart. X-rays will be taken to document how blood flows through the artery.
Questionnaires assessing quality of life, exercise habits, tobacco exposure, and family
medical history will be completed. Participants will also undergo blood pressure
measurements and blood collection for genetic analysis. Yearly follow-up phone calls will
occur for 5 years to document any hospitalizations.
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Observational Model: Case Control, Time Perspective: Prospective
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