Contemporary and Future Approaches to Inherited Cardiomyopathies

A special issue of Cardiogenetics (ISSN 2035-8148).

Deadline for manuscript submissions: 20 December 2026 | Viewed by 2690

Editors


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Guest Editor
Cardiovascular Department, San Donato Hospital, 52100 Arezzo, Italy
Interests: cardiomyopathies; myocarditis; arrhythmogenic cardiomyopathy; dilated cardiomyopathy; hypertrophic cardiomyopathy; heart failure

E-Mail Website
Guest Editor
Tuscan Regional Amyloidosis Centre, Careggi University Hospital, 50134 Florence, Italy
Interests: dilated cardiomyopathy; cardiomyopathies; arrhythmogenic cardiomyopathy; hypertrophic cardiomyopathy; arrhythmic risk stratification

Special Issue Information

Dear Colleagues,

Inherited cardiomyopathies are predominantly caused by variants in genes encoding sarcomeric, cytoskeletal, desmosome, nuclear envelope, enzymes or other proteins (such as transthyretin). While next-generation sequencing has vastly improved our ability to detect these variants, translating genetic insights into meaningful clinical outcomes remains challenging due to incomplete penetrance and environmental factors. This issue of Cardiogenetics focuses on the evolving understanding of the genetic, immunologic, and therapeutic dimensions of inherited cardiomyopathies.

Emerging evidence underscores the active role of the innate and acquired immune system in modulating disease onset and progression. Inflammatory pathways, immune cell infiltration, and autoimmune mechanisms may act as critical modifiers, particularly during arrhythmogenic phases. These findings could potentially lead to immune-targeted interventions, either alone or in combination with genetic therapies, especially in cases with active myocardial inflammation or immune dysregulation.

Gene therapy represents one of the most promising frontiers in this field. Approaches based on adenoviral (AAV) vectors for gene therapy are rapidly progressing toward clinical application. However, these strategies are intimately linked to the host immune response, which can impact both efficacy and safety. Immune recognition of viral capsids or transgene products may elicit neutralizing antibodies or cytotoxic responses, necessitating careful patient selection and immunomodulatory strategies. Beyond AAVs, other genome editing tools (e.g., CRISPR, base and prime editors) have emerged, especially for suppressing the abnormal proteins production or to correct the variant genome sequence.

This issue emphasizes the need for an integrated perspective that considers the genetic substrate, the phenotypic spectrum, and immune mechanisms when designing therapeutic strategies. By aligning precision diagnostics with immune-aware, gene-based therapies, the field moves closer to delivering transformative, individualized treatments for inherited cardiomyopathies.

Dr. Michele Ciabatti
Dr. Alessia Argiro
Guest Editors

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Keywords

  • cardiomyopathies
  • genetics
  • arrhythmias
  • targeted therapies
  • heart failure
  • inflammation

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Published Papers (2 papers)

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Research

16 pages, 4374 KB  
Article
Rising Burden of Potentially Inherited Arrhythmic Syndromes and Sudden Cardiac Death in the United States, 1999–2024
by Faizan Ahmed, Swapnil Patel, Muhammad Abdullah, Tehmasp Rehman Mirza, Bilal Qammar, Muhammad Shees Hunain, Jeris Abuhouran, Muhammad Faizan Tahir, Haris Bin Tahir, Taha Alam, Mohamed Bakr and Mohammad Amir Hossain
Cardiogenetics 2026, 16(3), 14; https://doi.org/10.3390/cardiogenetics16030014 - 2 Jul 2026
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Abstract
Background: Inherited arrhythmic syndromes (IAS) are an important but under-recognized cause of sudden cardiac death (SCD), particularly in younger individuals. Understanding long-term mortality trends is essential to evaluate their public health impact. Objective: To assess temporal trends and demographic disparities of [...] Read more.
Background: Inherited arrhythmic syndromes (IAS) are an important but under-recognized cause of sudden cardiac death (SCD), particularly in younger individuals. Understanding long-term mortality trends is essential to evaluate their public health impact. Objective: To assess temporal trends and demographic disparities of IAS-related sudden cardiac death among individuals aged 5–44 years in the United States using CDC WONDER data. Methods: This retrospective observational study utilized the CDC WONDER Multiple Cause-of-Death database from 1999 to 2024. Deaths were identified using ICD-10 codes for non-ischemic arrhythmogenic conditions (I42, I44, I45, I47, I49) in combination with sudden cardiac arrest or unexplained death (I46, R96). Ischemic heart disease (I20–I25) was excluded to enhance specificity for inherited causes. Crude and age-adjusted mortality rates (AAMRs) per 1,000,000 population were calculated and stratified by age, sex, race/ethnicity, region, urbanization, and place of death. Joinpoint software helped us calculate the average annual percentage change (AAPC)/annual percent change (APC) in AAMRs and the 95% CIs for these changes. Results: A total of 8879 deaths were identified over the study period. The AAMR increased from 1.46 (95% CI: 1.27–1.64) in 1999 to 3.15 (95% CI: 2.89–3.42) in 2024, peaking at 4.54 in 2021, with an overall AAPC of 3.71% (p < 0.000001). Mortality was higher in males; however, females demonstrated a greater relative increase over time. Non-Hispanic Black individuals exhibited the highest mortality rates and fastest rise. The 25–44-year age group accounted for most deaths and showed the steepest increase. Regional and urban–rural disparities were observed, with higher mortality rates in the South and rural areas. Conclusions: It is concluded that mortality related to inherited arrhythmic syndromes and sudden cardiac death is rising among young individuals in the United States. The findings highlight a growing burden of potentially inherited arrhythmogenic conditions and underscore the need for early detection strategies, including genetic screening and targeted public health interventions, to reduce premature cardiovascular mortality. Full article
(This article belongs to the Special Issue Contemporary and Future Approaches to Inherited Cardiomyopathies)
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16 pages, 1011 KB  
Article
Beyond Wall Thickness: Clinical Predictors of Genotype Positivity in Hypertrophic Cardiomyopathy
by Filippo Angelini, Veronica Dusi, Amedeo Maria Feneziani, Rossella Manai, Matteo Bianco, Enrica Lonni, Giulia Margherita Brach Del Prever, Pier Paolo Bocchino, Giuseppe Giannino, Daniele Melis, Giulia Gobello, Francesco Ravera, Lucia Elena Laiso, Federico Juvenal, Guglielmo Gallone, Stefano Pidello, Barbara Mabritto, Daniela Giachino, Giuseppe Musumeci, Alessandra Chinaglia, Walter Grosso Marra, Silvia Deaglio, Gaetano Maria De Ferrari and Claudia Raineriadd Show full author list remove Hide full author list
Cardiogenetics 2026, 16(2), 10; https://doi.org/10.3390/cardiogenetics16020010 - 11 May 2026
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Abstract
Background: Genetic testing in hypertrophic cardiomyopathy (HCM) yields variable positivity rates. Identifying clinical predictors of positive genetic tests could improve pre-test counseling and refine expectations about diagnostic yield. Methods: We analyzed consecutive genotyped HCM probands from a contemporary multicenter cohort across four Italian [...] Read more.
Background: Genetic testing in hypertrophic cardiomyopathy (HCM) yields variable positivity rates. Identifying clinical predictors of positive genetic tests could improve pre-test counseling and refine expectations about diagnostic yield. Methods: We analyzed consecutive genotyped HCM probands from a contemporary multicenter cohort across four Italian tertiary centers. Genotype positivity was defined as the presence of ≥1 pathogenic or likely pathogenic variant (ACMG classes 4–5). Multivariable logistic regression identified predictors of genotype positivity. Sensitivity analyses assessed the incremental value of left atrial volume index (LAVI) ≥ 34 mL/m2 and the mode of first clinical presentation. Results: Among 274 genotyped probands (median age at diagnosis 54 years; 62% male), 86 (31%) were genotype-positive (38% MYBPC3, 29% MYH7). Age at diagnosis <40 years (OR 2.38, 95%CI 1.26–4.51, p = 0.008), family history of sudden cardiac death/major ventricular arrhythmias (OR 2.34, 95%CI 1.16–4.84, p = 0.019) and family history of non-ischemic cardiomyopathy (OR 1.92, 95%CI 1.04–3.54, p = 0.038), were independently associated with genotype positivity whereas arterial hypertension was inversely associated (OR 0.42, 95%CI 0.23–0.77). Maximal left ventricular wall thickness > 20 mm and gender were not predictive of genotype positivity. Inclusion of LAVI modestly improved the model performance (AUC 0.769, p = 0.016, ΔAUC +0.024; DeLong p = 0.016) but without leading to meaningful patient reclassification. Conclusions: Genotype positivity in HCM links to earlier onset and family history; traditional severity markers and initial presentation may not independently suggest genetic causality. These findings may help shape a personalized approach to genetic counseling in HCM. Full article
(This article belongs to the Special Issue Contemporary and Future Approaches to Inherited Cardiomyopathies)
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