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Illinois [United States], April 30 : People may learn they have a gene mutation linked to some types of cardiovascular disease (CVD) as the usage of genetic testing rises. In order to better inform people and medical professionals on what to do when a variant is found.A new scientific statement was published today in the American Heart Association journal Circulation: Genomic and Precision Medicine.An American Heart Association scientific statement is a professional evaluation of recent findings that could influence future recommendations. The new position statement, "Interpreting Incidentally Identified Variants in Genes Associated with Heritable Cardiovascular Disease," offers guidance to healthcare professionals on how to interact with patients and their families and suggests appropriate follow-up measures to care for those who have variants that are thought to increase CVD risk. It also suggests next steps to determine whether a variant actually carries a health risk.Variants associated with cardiovascular disease risk are often found "incidentally" when people undergo genetic testing for non-cardiac reasons, including screening or diagnosis of other diseases. These unexpected genetic variants may also be discovered with genetic testing through direct-to-consumer DNA testing kits.Pretest genetic counseling is strongly encouraged to prepare patients for the possibility of incidental findings, how and whether findings will be communicated, and potential implications for themselves and family members."The scope and use of genetic testing have expanded greatly in the past decade with the increasing ease and reduced cost of DNA sequencing," said Andrew P. Landstrom, M.D., Ph.D., FAHA, chair of the scientific statement writing committee and associate professor of pediatrics and cell biology at Duke University School of Medicine in Durham, North Carolina. "Where we would once look for genetic changes in a handful of genes, we can now sequence every gene and, potentially, the whole genome, allowing us to make genetic diagnoses that would have been impossible in the past. However, with increased genetic testing comes more surprises, including finding unexpected variants in genes that might be associated with cardiovascular disease."If we interpret these incidental variants incorrectly, it may lead to inappropriate care, either by suggesting patients have a risk of cardiac disease when they do not, or by not providing care to those with increased risk for a serious condition."This statement is the first to focus on inherited monogenic, or single-gene, diseases for CVD which can be passed on within families, such as hypertrophic cardiomyopathy or long QT syndrome. There are currently 42 clinically treatable, secondary variant genes that increase the risk of sickness or death from sudden cardiac death, heart failure and other types of cardiovascular disease, according to the American College of Medical Genetics and Genomics. Genetic variants that cause long QT syndrome cause the heart to electrically reset slower than normal after each contraction, which may cause electrical instability of the heart and may lead to fainting, arrhythmias or even sudden death."The list of incidental variants related to cardiovascular disease continues to evolve. This statement provides a foundation of care that may help people with a CVD-related genetic variant and their health care professionals take the next step in determining the individual and familial risk that a variant may or may not carry," Landstrom said. "It's also important to consult with genetics specialists to custom-tailor an evaluation and treatment plan to both the individual and the genetic variant in order to ensure the highest level of care possible."Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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