Heart failure & cardiomyopathies

Prevalence of Pathogenic Variants in Cardiomyopathy-Associated Genes in Acute Myocarditis: A Systematic Review and Meta-Analysis

JACC Heart FailPublished Systematic review and meta-analysis of observational studies

Authors' conclusion

Genetic variants are present in a large proportion of patients with acute myocarditis. The prevalence of genetic variants and the genes involved vary according to age and clinical presentation.

Study context

Population
Patients with acute myocarditis
Participants
586 patients8 studies
Comparison
Uncomplicated myocarditis vs Complicated myocarditis, adults vs Complicated myocarditis, children
Outcome
Prevalence of pathogenic or likely pathogenic (P/LP) variants in cardiomyopathy-associated genes
Methodological detailsPRISMA, PubMed and Embase searched on March 4, 2023
  • PRISMA
  • PubMed and Embase searched on March 4, 2023

Pooled result

As reported in the abstract

Pooled prevalence of P/LP variants

Pooled prevalence of P/LP variants Uncomplicated myocarditis 4.2% (95% CI 1.8%–7.4%) · Complicated myocarditis, adults 21.9% (95% CI 14.3%–30.5%) · Complicated myocarditis, children 44.5% (95% CI 22.7%–67.4%)

I²

P/LP variants in cardiomyopathy-associated genes reported (89 variants)
85 patients

Further pooled results

OutcomeUncomplicated myocarditisComplicated myocarditis, adultsComplicated myocarditis, children
Gene type of P/LP variants
Desmosomal genes (predominant)64%— not stated in the abstract— not stated in the abstract
Sarcomeric genes— not stated in the abstract58%71%

— not stated in the abstract

Original publication

Prevalence of Pathogenic Variants in Cardiomyopathy-Associated Genes in Acute Myocarditis: A Systematic Review and Meta-Analysis. JACC Heart Fail. Published 3 April 2024. doi:10.1016/j.jchf.2024.02.012

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