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Teens knowing results of their cardiomyopathy genetic tests may improve family function

Circulation: Genomic and Precision Medicine Journal Report

2021-07-13
(Press-News.org) DALLAS, July 13, 2021 -- Sharing the results of genetic testing for cardiomyopathy in adolescents ages 13-18 does not appear to cause emotional harm to families or adversely impact family function or dynamics, according to new research published today in Circulation: Genomic and Precision Medicine, an American Heart Association journal.

Genetic testing for cardiomyopathy in symptomatic children has the potential to confirm a diagnosis, clarify prognosis, determine eligibility for disease-specific cardiomyopathy therapies and even inform risk for other family members. Genetic testing for asymptomatic adults and children also occurs after one of their family members receives positive cardiomyopathy genetic test results. While genetic testing can have significant medical and social implications for both children and their families, there is limited research on the psychological impact of cardiomyopathy genetic results and how the test results may affect family function and dynamics.

"As a medical geneticist caring for children with a personal or family history of cardiomyopathy, understanding how young people and their parents process the genetic test results and adjust after genetic testing are critically important," said Wendy K. Chung, M.D. Ph.D., senior author of the study, chief of clinical genetics and Kennedy Family Professor of Pediatrics and Medicine at Columbia University in New York City. "Genetic testing for cardiomyopathy could help to save lives, yet also has the potential to have a major impact on young people by limiting their sports participation or socialization with peers and may increase feelings of vulnerability during formative teenage years."

To determine family function and dynamics after children and their families receive genetic testing results, Chung and colleagues used a 60-question survey distributed to members of the Children's Cardiomyopathy Foundation and seven additional North American sites in the Pediatric Cardiomyopathy Registry. The survey questions are based on problem solving, communication, roles in the family, affective responsiveness, affective involvement, behavior control and general functioning. The questionnaire, known as the McMaster Family Assessment Device, measures an individual's perceptions of their family on a scale of one to four, with a four indicating the worst levels of family function. Following completion of genetic testing, parents and children took the survey. Additionally, adult participants were surveyed on their feelings about their child's genetic test results, and adolescents were surveyed on their feelings after receiving their own test results.

A total of 162 parent participants completed the survey; almost 60% of the respondents were female, and the average age of parents at the time of survey completion was 41.5 years. A total of 48 adolescent participants completed the survey, with an equal number of male and female respondents, average age of 16.7 years.

The researchers found that:

A total of 91% of adolescent respondents with and without cardiomyopathy were glad to know their genetic testing results; Half of the parents responded they would prefer to receive the genetic test results in advance of their children receiving the results. Almost 41% of parents believed the child and parents should receive results at the same time; and, Nearly 71% of adolescents believed they should receive their genetic test results at the same time as their parents, while only about 16% believed their parents should receive the genetic test results first. "With greater use of genetic information in medical care, it is important for clinicians to find ways to engage young people in this process so that they understand their test results and they can make positive changes that can improve their health," said Chung. "Understandably, some individuals experience negative emotions when they find out they have a genetic risk for a serious heart condition; however, their families appear to function better than those whose test results were negative."

The study is limited by a modest sample size of people who were predominantly non-Hispanic white participants; therefore, the results cannot be generalized to all population groups. There may be important cultural differences in family dynamics and feelings about genetic test results in other racial and ethnic groups that could not be measured in this study.

Additionally, because most participants were enrolled in the survey retrospectively, the time between receiving genetic test results and completing the survey varied from a few months to a few years; therefore, memory recall may contribute to some adjusted or inaccurate perceptions. The researchers suggest future studies that can prospectively investigate the impact of genetic testing on families to better understand how time affects their experiences.

INFORMATION:

Co-authors are Priyanka Ahimaz, M.S.; Maya Sabatello, L.L.B., Ph.D.; Min Qian, Ph.D.; Aijin Wang, M.S.; Erin M. Miller, M.S.; Ashley Parrott, M.S.; Ashwin K. Lal, M.D.; Kathryn C. Chatfield, M.D.; Joseph W. Rossano, M.D.; Stephanie M. Ware, M.D., Ph.D.; John J. Parent, M.D.; Paul Kantor, M.D.; Lisa Yue; Julia Wynn, M.S., M.S.; Teresa M. Lee, M.D.; Linda J. Addonizio, M.D.; and Paul S. Appelbaum, M.D. Author disclosures are in the manuscript.

The study was funded by the Children's Cardiomyopathy Foundation.

Additional Resources:

Available multimedia is on right column of release link - https://newsroom.heart.org/news/teens-knowing-results-of-their-cardiomyopathy-genetic-tests-may-improve-family-function?preview=71fe9f4b6a7550437c1697ddda0f69b1 Statements and conclusions of studies published in the American Heart Association's scientific journals are solely those of the study authors and do not necessarily reflect the Association's policy or position. The Association makes no representation or guarantee as to their accuracy or reliability. The Association receives funding primarily from individuals; foundations and corporations (including pharmaceutical, device manufacturers and other companies) also make donations and fund specific Association programs and events. The Association has strict policies to prevent these relationships from influencing the science content. Revenues from pharmaceutical and biotech companies, device manufacturers and health insurance providers are available here, and the Association's overall financial information is available here.

About the American Heart Association

The American Heart Association is a relentless force for a world of longer, healthier lives. We are dedicated to ensuring equitable health in all communities. Through collaboration with numerous organizations, and powered by millions of volunteers, we fund innovative research, advocate for the public's health and share lifesaving resources. The Dallas-based organization has been a leading source of health information for nearly a century. Connect with us on heart.org, Facebook, Twitter or by calling 1-800-AHA-USA1.



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[Press-News.org] Teens knowing results of their cardiomyopathy genetic tests may improve family function
Circulation: Genomic and Precision Medicine Journal Report