Cardiomyopathy and Preeclampsia
2018
Background: Preeclampsia is associated with diastolic dysfunction, peripartum cardiomyopathy, and both pre-existing and subsequent maternal cardiovascular disease. Gene mutations causing idiopathic cardiomyopathy were recently implicated in peripartum cardiomyopathy. We sought to determine whether cardiomyopathy gene mutations are also a contributory factor in preeclampsia. Methods: Subjects were participants in The Preeclampsia Registry and Biobank. After providing informed consent, subjects with a history of preeclampsia completed a detailed questionnaire and provided medical records for diagnostic confirmation. Saliva samples were collected for DNA isolation. Whole exome sequencing was performed to detect rare variants (minor allele frequency of <0.1%) in 43 genes associated with cardiomyopathy. Missense variants were deemed damaging missense if so classified by any of 7 standard function prediction algorithms. Variants were defined as loss-of-function if they caused a stop-gain, splicing, or frame-shi...
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