Inherited Cardiomyopathies Unit

Head of the Unit

Elena Sommariva, PhD

The Unit is dedicated to understanding the molecular mechanisms underlying inherited cardiomyopathies. With a strong translational focus, the laboratory starts from clinical questions and biological samples obtained from patients at the Centro Cardiologico Monzino to test functional and molecular hypotheses, with the aim of identifying novel therapeutic targets and validating drug efficacy through personalized medicine approaches.

Research activities are primarily based on in vitro disease modeling, including both simple cellular systems and advanced induced pluripotent stem cell (iPSC)-derived models, as well as in vivo models. The Unit integrates the study of genetic determinants with the investigation of how environmental factors influence disease pathogenesis and progression.

Recently, in collaboration with the Arrhythmology Unit, the laboratory launched a Phase II clinical trial involving patients with cardiomyopathy to evaluate a drug repurposing strategy, aiming to identify new therapeutic applications for existing medications.

Among the diseases under investigation, the laboratory focuses primarily on:

  • Arrhythmogenic Cardiomyopathy (ACM)
  • Dilated Cardiomyopathy (DCM)
  • Inflammatory Cardiomyopathies
  • Duchenne Muscular Dystrophy-Associated Cardiomyopathy

Through the integration of basic, translational, and clinical research, the Unit seeks to accelerate the development of innovative therapeutic strategies and improve the management of patients affected by inherited and acquired forms of cardiomyopathy.

Selected Projects

  • Project 1

    SEARCH Trial: Atorvastatin for Arrhythmogenic Cardiomyopathy

    Arrhythmogenic cardiomyopathy (ACM) is a genetic heart disease that can lead to severe arrhythmias, heart failure, and sudden cardiac death, particularly in young individuals. Current therapies are mainly symptomatic and do not halt disease progression.

    Recent studies have shown that elevated circulating levels of oxidized low-density lipoprotein (oxLDL) are associated with more severe forms of ACM, and that atorvastatin can prevent disease development in preclinical models. To determine whether atorvastatin can also slow disease progression in patients, the SEARCH clinical trial has been launched. SEARCH is a randomized, double-blind, placebo-controlled study involving 102 ACM patients treated for 18 months.

    The primary endpoint is the evaluation of changes in right ventricular function. Secondary endpoints include the assessment of arrhythmic burden, ECG parameters, imaging findings, and circulating biomarkers. SEARCH will provide the first clinical evidence on the efficacy of atorvastatin in modifying ACM progression, paving the way for new targeted therapeutic strategies.


    Project 2

    Advanced Cardiac Organoids for Modeling Heart Disease and Drug Responses

    Understanding the mechanisms underlying cardiac diseases requires in vitro models capable of reproducing the complexity of the heart, including the interactions among its different cellular populations and the influence of environmental factors, such as extracellular matrix remodeling and responses to pharmacological treatments.

    The development of advanced in vitro systems is a rapidly evolving field of research. To address this need, we have developed an innovative method for generating cardiac organoids—small three-dimensional structures approximately half a millimeter in diameter—that recapitulate both the multicellular composition and the complex architectural organization of cardiac tissue, including chamber-like structures.

    This high-throughput and cost-effective platform allows the non-destructive measurement of functional parameters in organoids following pharmacological treatment. Using this model, it is possible to assess drug-induced cardiotoxicity and reproduce key features of genetic cardiomyopathies, whose complexity cannot yet be fully recapitulated by traditional in vitro models or animal models, such as arrhythmogenic cardiomyopathy (ACM).


    Project 3

    Modeling Duchenne Muscular Dystrophy–Associated Cardiomyopathy Using Patient-Derived iPSCs

    Muscular dystrophy (MD) is a genetic disorder caused by mutations in the dystrophin gene. The two main forms are Duchenne Muscular Dystrophy (DMD), characterized by early onset and severe progression, and Becker Muscular Dystrophy (BMD), which typically exhibits a later onset and a more variable clinical course.

    Both conditions affect skeletal and cardiac muscle, significantly reducing life expectancy. While therapeutic advances have improved survival, cardiomyopathy has become one of the leading causes of death in these patients.

    Identifying the mechanisms responsible for the development and variability of cardiomyopathy in patients with muscular dystrophy is therefore of paramount importance. The aim of this project is to generate induced pluripotent stem cell (iPSC) lines derived from patients with Duchenne muscular dystrophy, in collaboration with the iPSC Facility for Cardiac Modelling and Function, differentiate them into cardiomyocytes, and analyze their cardiac phenotypes.

    The in vitro findings will then be correlated with the clinical data of the specific patients from whom the iPSCs were generated. This approach will help elucidate the mechanisms underlying dystrophin-associated cardiomyopathy, with the goal of identifying potential therapeutic targets and, ultimately, predictive biomarkers for disease development and progression.

best publications in the last three years

    • Analysis of effector/memory regulatory T cells from arrhythmogenic cardiomyopathy patients identified IL-32 as a novel player in ACM pathogenesis. Soussi S, Maione AS, Lefèvre L, Pizzinat N, Iacovoni J, Gonzalez-Fuentes I, Cussac D, Iengo L, Santin Y, Tundo F, Tondo C, Pompilio G, Parini A, Douin-Echinard V, Sommariva E. Cell Death Dis. 2025;16(1):87. doi: 10.1038/s41419-025-07364-y.PMID: 39934117
    • Cardiomyocyte and stromal cell cross-talk influences the pathogenesis of arrhythmogenic cardiomyopathy: a multi-level analysis uncovers DLK1-NOTCH pathway role in fibro-adipose remodelling. Maione AS, Iengo L, Sala L, Massaiu I, Chiesa M, Lippi M, Ghilardi S, Florindi C, Lodola F, Zaza A, Tondo C, Schiavone M, Banfi C, Pompilio G, Poggio P, Sommariva E. Cell Death Discov. 2024;10(1):484. doi: 10.1038/s41420-024-02232-8.PMID: 39609399
    • Omics Analyses of Stromal Cells from ACM Patients Reveal Alterations in Chromatin Organization and Mitochondrial Homeostasis. Lippi M, Maione AS, Chiesa M, Perrucci GL, Iengo L, Sattin T, Cencioni C, Savoia M, Zeiher AM, Tundo F, Tondo C, Pompilio G, Sommariva E. Int J Mol Sci. 2023;24(12):10017. doi: 10.3390/ijms241210017.PMID: 37373166
    • Ca2+ dysregulation in cardiac stromal cells sustains fibro-adipose remodeling in Arrhythmogenic Cardiomyopathy and can be modulated by flecainide. Maione AS, Faris P, Iengo L, Catto V, Bisonni L, Lodola F, Negri S, Casella M, Guarino A, Polvani G, Cerrone M, Tondo C, Pompilio G, Sommariva E, Moccia F.J Transl Med. 2022;20(1):522. doi: 10.1186/s12967-022-03742-8.PMID: 36371290
    • Spectrum of Rare and Common Genetic Variants in Arrhythmogenic Cardiomyopathy Patients.
    • Lippi M, Chiesa M, Ascione C, Pedrazzini M, Mushtaq S, Rovina D, Riggio D, Di Blasio AM, Biondi ML, Pompilio G, Colombo GI, Casella M, Novelli V, Sommariva E. Biomolecules. 2022;12(8):1043. doi: 10.3390/biom12081043.PMID: 36008935
    • An in vitro model for cardiac organoid production: The combined role of geometrical confinement and substrate stiffness. Santoro R, Piacentini L, Vavassori C, Benzoni P, Colombo GI, Banfi C, Barbuti A, Pompilio G.Mater Today Bio. 2025;31:101566. doi: 10.1016/j.mtbio.2025.101566. eCollection 2025 Apr. PMID: 40061214

Staff

  • Rosaria Santoro, PhD

    Yohan Santin, PhD

    Davide Rovina, PhD

    Melania Lippi, PhD

    Lara Iengo, PhD student

    Sofia Milasi, PhD student

    Riccardo Risigo MSc

    Aurora Lualdi, Msc

    Edoardo Garavaglia, MSc

    Flavia Bruttini, MD

    Elisabetta Ceravolo, Infermiera Ricerca