Systematic large-scale assessment of the genetic architecture of left ventricular noncompaction reveals diverse etiologies
Why the study?
To characterize the genetic architecture of LVNC and determine whether it represents a distinct pathology or a secondary phenotype associated with other cardiac diseases.
What is the genetic architecture of left ventricular noncompaction, and does it represent a distinct pathology or a secondary phenotype?
Population
840 LVNC cases and 125,748 gnomAD population controls
Comparison
LVNC cases vs gnomAD controls, compared to DCM and HCM analyses
Design
Rare variant association study
Authors
Discussion
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Member takes
Implication
MYH7tv enrichment may aid LVNC subtyping; leaves open distinction from physiological forms or DCM/HCM overlap pending validation.
Structured PICO
What is the genetic architecture of left ventricular noncompaction, and does it represent a distinct pathology or a secondary phenotype?
P
Population
840 left ventricular noncompaction (LVNC) cases and 125,748 gnomAD population controls
I
Intervention
Rare variant association analysis
C
Comparator
gnomAD population controls, and comparison to dilated cardiomyopathy (DCM) and hypertrophic cardiomyopathy (HCM)
O
Outcome
Genetic variants associated with LVNCsurrogate
LVNC shares substantial genetic overlap with DCM and HCM but is also associated with distinct etiologies, such as MYH7 truncating variants, which can help distinguish pathological from physiological noncompaction.
Cite This Study
Mazzarotto et al. (2021) studied this question.