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Genetic analysis combined with a segregation study allowed us to classify this novel MYL2 variation, p.Gly162Glu, as a novel pathogenic mutation leading to a familial form of HCM. Due to absence of fast in vitro approaches to evaluate the functional impact of missense variants on HCM-causing genes, segregation studies remain, when possible, the easiest approach to evaluate the putative pathogenicity of novel gene variants, more particularly missense ones.

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