NEW YORK New research suggests that some of the same genetic factors contribute to both myocardial infarction and to spontaneous coronary artery dissection (SCAD), though the variants that increase the likelihood of having a heart attack appeared to reduce the risk of SCAD a condition that is overrepresented in women under 50 who are atherosclerosis-free and lack obvious cardiac risk factors.

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Complex Genetics Identified for Heart Condition Affecting Seemingly Healthy Young Women - GenomeWeb