Combined population genomic screening for three high-risk conditions in Australia: a modelling study
P Lacaze et al, e Clin Medicine, November 2023
From the abstract: "This modeling study assessed the impact of offering combined genomic screening for hereditary breast and ovarian cancer, Lynch syndrome and familial hypercholesterolaemia to all young adults in Australia, compared with the current practice of clinical criteria-based testing for each condition separately. Our findings suggest that offering combined genomic screening for high-risk conditions to young adults would be cost-effective in the Australian public healthcare system, at currently realistic testing costs. "
Factors associated with adherence to BRCA1/2 mutation testing after oncogenetic counseling in long-surviving patients with a previous diagnosis of breast or ovarian cancer.
Silvia Actis et al. J Community Genet 2023 9
From the abstract: "We analyzed socio-demographic and psychological parameters associated with the decision to undergo BRCA1/2 genetic testing or the reasons behind the withdrawal. Thirty-nine patients underwent BRCA1/2 genetic testing. Patients who accept the genetic test communicate more easily with family members than those who refuse. Factors associated with test refusal are having a long-term partner and having a negative perception of life. There is a trend, although not statistically significant, toward younger age at cancer diagnosis, more likely to participate in cancer screening programs (71.8% vs. 45.5%), and more likely to have daughters (63.3% vs. 37.5%) in the group that accepted the test. "
Persistent Underutilization of BRCA Testing for Breast and Ovarian Cancer in the United States: Implications for Health Disparities
L Shi et al, CDC Blog Post, July 25, 2023
Two recent studies document ongoing underutilization and disparities in genetic testing for patients with breast and ovarian cancer. The two studies demonstrate the importance of population-level data to track progress in implementation, outcomes, and disparities in genomic medicine. The studies also show how diverse data sources, such as state-based cancer registries, laboratory, EHR, administrative claims, and survey data, each with its own strengths and limitations, can be used to help build the evidence base on genetic testing utilization and disparities.
Public attitudes challenge clinical practice on genetic risk disclosure in favour of healthcare-provided direct dissemination to relatives
A Rosen et al, EJHG, July 20, 2023
Germline genetic testing often has implications not only for the individual patient but also for their genetic relatives. This is especially true for high-penetrance pathogenic variants associated with conditions such as familial hypercholesterolemia and hereditary cancer risk syndromes like Lynch syndrome and the hereditary breast and ovarian cancer syndrome. For these conditions, targeted prevention programs are available, and cascade screening is cost-effective. It is therefore highly relevant to find effective strategies to disclose information from the genetic investigation to healthy relatives at risk. Informing relatives at risk enables equitable access to pre-test genetic counselling and a possibility for them to make an informed decision about genetic testing as well as prevention.