Why the study?
Do multiple gene mutations worsen clinical phenotype and increase sudden cardiac death risk in patients with hypertrophic cardiomyopathy compared to single mutations?
Population
80 unrelated probands with hypertrophic cardiomyopathy and their genotyped family members in an Australian…
Comparison
Presence of multiple gene mutations identified… vs Presence of a single gene mutation.
Design
Cohort
Authors
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May support intensified SCD surveillance in multiple-mutation HCM; hypothesis-generating and requires prospective validation before practice change.
Do multiple gene mutations worsen clinical phenotype and increase sudden cardiac death risk in patients with hypertrophic cardiomyopathy compared to single mutations?
Multiple gene mutations in HCM families are associated with a more severe clinical phenotype, including increased risk of sudden cardiac death and greater septal wall thickness, highlighting the need for comprehensive genetic screening.
Jodie Ingles (2005) studied this question.