In infantile hypertrophic cardiomyopathy, overall outcomes are poor and strongly related to underlying etiology, highlighting the critical need for comprehensive genetic and etiological testing.
This large, multicentre study of infantile HCM describes a complex cohort of patients with a diverse phenotypic spectrum and clinical course. Although overall outcomes were poor, this was largely related to underlying aetiology emphasizing the importance of comprehensive aetiological investigations, including genetic testing, in infantile HCM.
Norrish et al. (Mon,) studied this question.