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Last Posted: Apr 18, 2024
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Liminality between direct and family-mediated contact in the communication of genetic information to at-risk relatives.

From the article: "Ever since genetic test results have been able to be reported, questions have arisen regarding their implications for genetic relatives. Alongside the proband in whom the initial diagnosis is made, family members often also have an interest in the information. Being informed allows an at-risk relative to consider genetic counseling and testing, and to act in advance to prevent or mitigate future morbidity. Indeed, supporting patients to communicate risk information to their relatives is now considered as a key aspect for maximizing the benefits of genomic medicine. "

Strategies to improve implementation of cascade testing in hereditary cancer syndromes: a systematic review
J Chiang et al, NPJ Genomic Medicine, April 5, 2024

From the abstract: " Despite growing efforts targeted at improving cascade testing uptake, current literature continues to reflect poor rates of uptake, typically below 30%. This study aims to systematically review current literature on intervention strategies to improve cascade testing, assess the quality of intervention descriptions and evaluate the implementation outcomes of listed interventions. This systematic review shows that most interventions have demonstrated success in improving cascade testing uptake. Uptake of cascade testing was highest with delivery arrangement (68%). However, the quality of description of interventions and assessment of implementation outcomes are often suboptimal, hindering their replication and implementation downstream."

Cost-Effectiveness of Screening Strategies for Familial Hypercholesterolaemia: An Updated Systematic Review.
Clara Marquina et al. Pharmacoeconomics 2024 1

From the abstract: "A total of 21 studies evaluating 62 strategies were included in this review, most of the studies (95%) adopted a healthcare perspective in the base case, and majority were set in high-income countries. Strategies analysed included cascade screening (23 strategies), opportunistic screening (13 strategies), systematic screening (11 strategies) and population-wide screening (15 strategies). Most of the strategies relied on genetic diagnosis for case ascertainment. Based on reported willingness to pay thresholds for each setting, most CEA studies concluded that screening for FH compared with no screening was cost-effective, regardless of the screening strategy. Cascade screening resulted in the largest health benefits per person tested. "

Managing genetic information sharing at family and population level
A McNeill, EJHG, January 4, 2023

From the article: "The process by which the “at risk” relatives of a person with a genetic condition should be notified of the possible need for them to have genetic testing has long been controversial. At present, it is common practice to request the proband to inform relatives of the genetic condition, treatment and testing options. Uptake of cascade testing is generally low, and dissemination of the genetic information within families is a major barrier. "

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Disclaimer: Articles listed in the Public Health Genomics and Precision Health Knowledge Base are selected by the CDC Office of Public Health Genomics to provide current awareness of the literature and news. Inclusion in the update does not necessarily represent the views of the Centers for Disease Control and Prevention nor does it imply endorsement of the article's methods or findings. CDC and DHHS assume no responsibility for the factual accuracy of the items presented. The selection, omission, or content of items does not imply any endorsement or other position taken by CDC or DHHS. Opinion, findings and conclusions expressed by the original authors of items included in the update, or persons quoted therein, are strictly their own and are in no way meant to represent the opinion or views of CDC or DHHS. References to publications, news sources, and non-CDC Websites are provided solely for informational purposes and do not imply endorsement by CDC or DHHS.

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