Expanding the genetic and phenotypic spectrum of ACTA2-related vasculopathies in a Dutch cohort

The Complicated Genetics behind Uncomplicated Type B Aortic Dissection

BACKGROUND

Up to 50% of uncomplicated type B aortic dissection (unTBAD) cases progress to become complicated with a mortality rate of up to 42% within 5 years of onset. Morphological and clinical parameters have previously been defined for the decision of surgical intervention in unTBAD to improve clinical outcomes. The analysis of genetic variants in this risk stratification has demonstrated a lack of evidence to influence clinical decision-making.

METHODS

A comprehensive literature review was conducted using multiple electronic databases. A selection of genes recognized in thoracic aortic aneurysms and dissections were investigated in association with clinical outcomes in type B aortic dissections.

RESULTS

Case studies highlighted the impact of variants in fibrillin-1, type III collagen, alpha-actin 2, MYH11, protein kinase cGMP-dependent type I, transforming growth factor beta 1, type I transforming growth factor β receptor, and type II transforming growth factor β receptor on clinical outcomes in type B aortic dissection. Patients who carry variants in these genes experience more rapid disease progression and benefit from surgery.

CONCLUSION

The presence of a variant in genes that underlie unTBAD etiology could impact clinical decision-making and risk stratification in unTBAD. Emerging evidence supports thoracic endovascular aortic repair for unTBAD patients who have a higher risk of developing complications. The use of genetics in the management of unTBAD patients may help to improve the adverse clinical outcomes in unTBAD.

Cardiovascular Management of Aortopathy in Children: A Scientific Statement From the American Heart Association

Aortopathy encompasses a spectrum of conditions predisposing to dilation, aneurysm, dissection, or rupture of the aorta and other blood vessels. Aortopathy is diagnosed commonly in children, from infancy through adolescence, primarily affecting the thoracic aorta, with variable involvement of the peripheral vasculature. Pathogeneses include connective tissue disorders, smooth muscle contraction disorders, and congenital heart disease, including bicuspid aortic valve, among others. The American Heart Association has published guidelines for diagnosis and management of thoracic aortic disease. However, these guidelines are predominantly focused on adults and cannot be applied adeptly to growing children with emerging features, growth and developmental changes, including puberty, and different risk profiles compared with adults. Management to reduce risk of progressive aortic dilation and dissection or rupture in children is complex and involves genetic testing, cardiovascular imaging, medical therapy, lifestyle modifications, and surgical guidance that differ in many ways from adult management. Pediatric practice varies widely, likely because aortopathy is pathogenically heterogeneous, including genetic and nongenetic conditions, and there is limited published evidence to guide care in children. To optimize care and reduce variation in management, experts in pediatric aortopathy convened to generate this scientific statement regarding the cardiovascular care of children with aortopathy. Available evidence and expert consensus were combined to create this scientific statement. The most common causes of pediatric aortopathy are reviewed. This document provides a general framework for cardiovascular management of aortopathy in children, while allowing for modification based on the personal and familial characteristics of each child and family.

Be aware of childhood stroke: Proceedings from EPNS Webinar

Childhood arterial ischaemic stroke (AIS) is a significant health concern with increasing incidence. This review aims to provide an overview of the current understanding of childhood AIS. The incidence of childhood AIS is on the rise especially in developing countries, likely due to improved awareness and diagnostic capabilities. Aetiology of childhood AIS is multifactorial, with both modifiable risk factors and genetic predisposition playing important roles. Identifying and addressing these risk factors, such as infection, sickle cell disease, and congenital heart defects, is essential in prevention and management. Identifying underlying conditions through genetic testing is important for appropriate management and long-term prognosis. Clinically, distinguishing stroke from stroke mimics can be challenging. Awareness of important stroke mimics, including migraines, seizures, and metabolic disorders, is crucial to avoid misdiagnosis and ensure appropriate treatment. The diagnostic approach to childhood AIS involves a comprehensive "chain of care," including initial assessment, neuroimaging, and laboratory investigations. National guidelines play a pivotal role in standardizing and streamlining the diagnostic process, ensuring prompt and accurate management. Early intervention is critical in the management of childhood AIS. Due to the critical time window, the question if mechanical thrombectomy is feasible and beneficial should be addressed as fast as possible. Early initiation of antiplatelet or anticoagulation therapy and, in select cases, thrombolysis can help restore blood flow and minimize long-term neurological damage. Additionally, rehabilitation should start as soon as possible to optimize recovery and improve functional outcomes. In conclusion, childhood AIS is a growing concern. Understanding the increasing incidence, age distribution, risk factors, clinical presentation, diagnostic approach, and management strategies is crucial for optimized management of these patients.