BENEFIT

Sudden cardiac arrest (SCA) remains a significant public health challenge, accounting for nearly 20% of all deaths in developed nations and approximately half of all heart disease-related fatalities. A notable subset of SCA cases occurs in individuals without prior heart disease diagnosis, resulting in profound psychosocial impacts on affected families and society. Ventricular fibrillation (VF) is the primary arrhythmia leading to SCA, often occurring outside healthcare settings with survival rates ranging from 5% to 20%. Prevention is crucial, yet gaps in our understanding of SCA causes and mechanisms hinder effective prevention efforts. Various genetic and non-genetic factors, such as gender, age, comorbidities, and lifestyle, likely influence SCA risk, but their specific contributions remain unclear. The Focus The PREDICT2 initiative brings together leading Principal Investigators with expertise in epidemiology, clinical studies, genetics, and functional research to elucidate factors contributing to SCA, uncover underlying mechanisms, and develop strategies for prevention and treatment. The Research Building on foundational work from PREDICT1, which involved extensive patient characterization and preclinical model development, PREDICT2 focuses on inherited arrhythmia syndromes as models to understand the arrhythmogenic substrate in more common cardiac syndromes associated with SCA. Specifically, PREDICT2 aims to: Identify genetic and non-genetic factors that contribute to SCA risk and develop personalized risk prediction algorithms for individual patient assessment. Conduct functional studies to elucidate the mechanisms underlying SCA, enabling the development of novel risk stratification and therapeutic approaches. Implement clinical studies to evaluate risk prediction algorithms and therapeutic interventions, aiming to enhance the treatment and prevention of SCA. Origin This consortium was funded through the Impulse Grant program by the Dutch Heart Foundation.

The successful treatment of congenital heart disease (ConHD) has greatly increased the survival of children with this condition. Many of these defects require surgical or catheter interventions immediately after birth. However, complete restoration of the defect is often unachievable, a high risk of developing heart failure, arrhythmias, sudden cardiac death or blood vessel dilatation or stenosis relatively early in life. Currently, there is a lack of personalized risk predictors and optimal clinical decision tools, highlighting an unmet need to develop new effective strategies for treating and preventing ventricular failure, arrhythmias, and large vessel diseases. The Focus The OUTREACH consortium focuses on specific types of congenital heart diseases (ConHD) related to outflow tract defects, such as transposition of the great arteries, congenital aortic stenosis, and tetralogy of Fallot, which collectively account for over half of all ConHD cases. The goal of OUTREACH is to reduce the risk of mortality and morbidity and improve the quality of life for these patients (both children and adults) by improving follow-up practices based on outcomes, implementing personalized risk assessment tools, and advancing therapeutic strategies. The Research The OUTREACH consortium integrates expertise in preclinical research, developmental biology, disease modeling, and clinical research from academic centers specializing in pediatric and adult congenital cardiology and surgery. Its objectives are: identifying better parameters for risk assessment and early detection of heart failure or ventricular arrhythmias in ConHD patients with outflow tract defects. Exploring efficient treatments to enhance adaptation and prevent heart failure and vascular damage in at-risk ConHD patients. This consortium conducts extensive research involving a large cohort of ConHD patients to unravel the underlying causes and mechanisms of cardiac adaptations following surgical interventions. It investigates the molecular mechanisms responsible for outflow tract defects and evaluates whether stimulating heart regeneration in ConHD models can mitigate adverse remodeling and heart failure. Additionally, the consortium explores new non-invasive imaging techniques and blood-derived biomarkers to develop innovative risk analysis tools for clinical decision-making. In OUTREACH a nationwide registry is created for all patients (children and adults) with ConHD in the Netherlands by harmonizing existing registries KinCor and ConCor. This is an important step towards optimizing the quality of care for the ConHD population and fostering scientific research on ConHD. Origin The Dutch Heart Foundation and Stichting Hartekind, who collaborate within the Dutch CardioVascular Alliance, initiated an invitational grant to start and fund large-scale research aimed at earlier detection and better treatment of the consequences of congenital heart defects.