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J Genet Couns. 2015 Oct;24(5):797-809. doi: 10.1007/s10897-014-9810-8. Epub 2015 Jan 8.

Factors Associated with Uptake of Genetics Services for Hypertrophic Cardiomyopathy.

Author information

1
Department of Genetics, Stanford University, Stanford, CA, USA.
2
Department of Pediatrics, Division of Medical Genetics, Stanford University, 300 Pasteur Dr. H-315, Stanford, CA, 94305, USA.
3
Laboratory for Molecular Medicine, Partners HealthCare Center for Personalized Genetic Medicine, Cambridge, MA, USA.
4
Department of Pediatrics, Division of Medical Genetics, Stanford University, 300 Pasteur Dr. H-315, Stanford, CA, 94305, USA. jon.bernstein@stanford.edu.

Abstract

Hypertrophic cardiomyopathy (HCM) is a common cardiovascular disorder with variable expressivity and incomplete penetrance. Clinical guidelines recommend consultation with a genetics professional as part of an initial assessment for HCM, yet there remains an underutilization of genetics services. We conducted a study to assess factors associated with this underutilization within the framework of the Health Belief Model (HBM). An online survey was completed by 306 affected individuals and at risk family members. Thirty-seven percent of individuals (113/306) had visited a genetics professional for reasons related to HCM. Genetic testing was performed on 53 % (162/306). Individuals who had undergone testing were more likely to have seen a genetics professional (p < 0.001), had relatives with an HCM diagnosis (p = 0.002), and have a known familial mutation (p < 0.001). They were also more likely to agree that genetic testing would satisfy their curiosity (p < 0.001), provide reassurance (p < 0.001), aid family members in making healthcare decisions (p < 0.001), and encourage them to engage in a healthier lifestyle (p = 0.002). The HBM components of cues to action and perceived benefits and barriers had the greatest impact on uptake of genetic testing. In order to ensure optimal counseling and care for individuals and families with HCM, awareness and education around HCM and genetic services should be promoted in both physicians and patients alike.

KEYWORDS:

Genetic services; Genetic testing; Health Belief Model; Hypertrophic cardiomyopathy (HCM); Utilization

PMID:
25566741
DOI:
10.1007/s10897-014-9810-8
[Indexed for MEDLINE]

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