期刊
FRONTIERS IN PEDIATRICS
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fped.2021.632293
关键词
hypertrophic cardiomyopathy; etiology; children; diagnosis; treatment
类别
Hypertrophic cardiomyopathy is characterized by left ventricular hypertrophy in children, with a diverse range of causes including sarcomeric gene mutations and non-sarcomeric causes. The age of onset and underlying etiology significantly impact the prognosis of children with HCM, and targeted approaches for non-sarcomeric etiologies have emerged in recent years. Etiological diagnosis is crucial in designing specific management and therapy for these rare disorders in children.
Hypertrophic cardiomyopathy (HCM) is a myocardial disease characterized by left ventricular hypertrophy not solely explained by abnormal loading conditions. Despite its rare prevalence in pediatric age, HCM carries a relevant risk of mortality and morbidity in both infants and children. Pediatric HCM is a large heterogeneous group of disorders. Other than mutations in sarcomeric genes, which represent the most important cause of HCM in adults, childhood HCM includes a high prevalence of non-sarcomeric causes, including inherited errors of metabolism (i.e., glycogen storage diseases, lysosomal storage diseases, and fatty acid oxidation disorders), malformation syndromes, neuromuscular diseases, and mitochondrial disease, which globally represent up to 35% of children with HCM. The age of presentation and the underlying etiology significantly impact the prognosis of children with HCM. Moreover, in recent years, different targeted approaches for non-sarcomeric etiologies of HCM have emerged. Therefore, the etiological diagnosis is a fundamental step in designing specific management and therapy in these subjects. The present review aims to provide an overview of the non-sarcomeric causes of HCM in children, focusing on the pathophysiology, clinical features, diagnosis, and treatment of these rare disorders.
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