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1.
Pharmacogenomics ; 20(5): 319-329, 2019 04.
Article in English | MEDLINE | ID: mdl-30983503

ABSTRACT

Pharmacogenomic (PGx) tests represent significant advances in precision medicine. Our aim was to explore perceptions following the return of PGx results, medication management, and disclosure to providers. We surveyed clients who had PGx testing and conducted a chart review of PGx results. Respectively, 84% and 94% of participants found pre- and post-test genetic counseling helpful. There was a significant difference in disclosure, while 6% disclosed results to a pharmacist, 50% disclosed to a physician. Qualitative analysis identified three themes: 1) psychological response; 2) perceived utility; 3) experiences with disclosure. Our study supports the provision of genetic counseling for a non-disease related genetic test. Benefits of PGx testing can be optimized by the collaboration of physicians, pharmacists, genetic counselors and patients.


Subject(s)
Pharmacogenomic Testing , Precision Medicine , Adolescent , Adult , Aged , Cohort Studies , Disclosure , Female , Genetic Counseling/psychology , Health Expenditures , Humans , Male , Middle Aged , Patient Care Management , Patient Participation/psychology , Patient Satisfaction , Perception , Pharmacogenomic Testing/economics , Precision Medicine/psychology , Surveys and Questionnaires , Young Adult
2.
CMAJ ; 190(5): E126-E136, 2018 02 05.
Article in English | MEDLINE | ID: mdl-29431110

ABSTRACT

BACKGROUND: The Personal Genome Project Canada is a comprehensive public data resource that integrates whole genome sequencing data and health information. We describe genomic variation identified in the initial recruitment cohort of 56 volunteers. METHODS: Volunteers were screened for eligibility and provided informed consent for open data sharing. Using blood DNA, we performed whole genome sequencing and identified all possible classes of DNA variants. A genetic counsellor explained the implication of the results to each participant. RESULTS: Whole genome sequencing of the first 56 participants identified 207 662 805 sequence variants and 27 494 copy number variations. We analyzed a prioritized disease-associated data set (n = 1606 variants) according to standardized guidelines, and interpreted 19 variants in 14 participants (25%) as having obvious health implications. Six of these variants (e.g., in BRCA1 or mosaic loss of an X chromosome) were pathogenic or likely pathogenic. Seven were risk factors for cancer, cardiovascular or neurobehavioural conditions. Four other variants - associated with cancer, cardiac or neurodegenerative phenotypes - remained of uncertain significance because of discrepancies among databases. We also identified a large structural chromosome aberration and a likely pathogenic mitochondrial variant. There were 172 recessive disease alleles (e.g., 5 individuals carried mutations for cystic fibrosis). Pharmacogenomics analyses revealed another 3.9 potentially relevant genotypes per individual. INTERPRETATION: Our analyses identified a spectrum of genetic variants with potential health impact in 25% of participants. When also considering recessive alleles and variants with potential pharmacologic relevance, all 56 participants had medically relevant findings. Although access is mostly limited to research, whole genome sequencing can provide specific and novel information with the potential of major impact for health care.


Subject(s)
Genetic Variation/genetics , Genome, Human/genetics , Sequence Analysis, DNA/methods , Whole Genome Sequencing/methods , Canada , Female , Genes, Recessive/genetics , Genetic Predisposition to Disease/genetics , Humans , Male
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