Purpose: The notion of offering population-based screening to the Ashkenazi Jewish (AJ) population for the BRCA1/2 founder mutations continues to gain support. A program called the BRCAcommunity initiative was designed to identify the benefits and barriers associated with implementing this screening in a clinical setting.
Methods: Interested AJ individuals were stratified into high-risk (HR) and low-risk (LR) groups based on self-reported cancer histories. Those at HR were offered traditional genetic counseling/testing; those at LR were offered group genetic counseling and subsidized AJ BRCA founder mutation testing.
Results: During the pilot year, 62% of initial registrants and 53% of ultimate study participants were classified into the HR group. Among the 101 HR and 88 LR study participants, 8 and 2 BRCA carriers were identified, respectively. The LR carriers would have been missed by current mechanisms. Survey responses provided insight into the motivations and fears associated with pursuing testing, the efficacy of the initiative design, and challenges that exist on multiple levels, including the community, health-care providers, and insurance coverage.
Conclusion: Although the medical value of identifying presymptomatic BRCA carriers in Ashkenazi Jews is evident, further measures need to be taken before this effort can be accomplished on a large scale.Genet Med advance online publication 13 October 2016.
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http://dx.doi.org/10.1038/gim.2016.154 | DOI Listing |
J Med Genet
December 2024
Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
Background: The NHS Jewish BRCA Testing Programme is offering germline and genetic testing to people with ≥1 Jewish grandparent. Who have an increased likelihood of having an Ashkenazi Jewish (AJ) founder germline pathogenic variant (gPV) compared with the general population.Testing is offered via a self-referral, home-based saliva sampling pathway, supported by a genetic counsellor telephone helpline.
View Article and Find Full Text PDFbioRxiv
December 2024
Material Measurement Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Dr, MS8312, Gaithersburg, MD 20899, USA.
Somatic mosaicism is an important cause of disease, but mosaic and somatic variants are often challenging to detect because they exist in only a fraction of cells. To address the need for benchmarking subclonal variants in normal cell populations, we developed a benchmark containing mosaic variants in the Genome in a Bottle Consortium (GIAB) HG002 reference material DNA from a large batch of a normal lymphoblastoid cell line. First, we used a somatic variant caller with high coverage (300x) Illumina whole genome sequencing data from the Ashkenazi Jewish trio to detect variants in HG002 not detected in at least 5% of cells from the combined parental data.
View Article and Find Full Text PDFGenet Med Open
July 2024
23andMe, Inc, Sunnyvale, CA.
Purpose: Carrier screening identifies reproductive risk for autosomal recessive and X-linked genetic conditions. Currently, some medical society guidelines continue to recommend ethnicity-based carrier screening for conditions associated with Ashkenazi Jewish (AJ) ancestry. We assessed the utility and limitations of these guidelines in a large, ethnically and genetically diverse cohort of genotyped individuals.
View Article and Find Full Text PDFAm J Hum Genet
November 2024
Medical Genetics and Genomics Laboratories, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA; Departments of Pathology, and Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. Electronic address:
Analysis of exome data from the latest release of the Genome Aggregation Database (gnomAD v.4.1.
View Article and Find Full Text PDFGenes (Basel)
October 2024
Division of Ophthalmology, Hadassah Medical Center, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel.
Background: Inherited retinal diseases (IRDs) are clinically complex and genetically heterogeneous visual impairment disorders with varying penetrance and severity. Disease-causing variants in at least 289 nuclear and mitochondrial genes have been implicated in their pathogenesis.
Methods: Whole exome sequencing results were analyzed using established pipelines and the results were further confirmed by Sanger sequencing and minigene splicing assay.
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