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Discordant clinical features of identical hypertrophic cardiomyopathy twins

2021; National Academy of Sciences; Volume: 118; Issue: 10 Linguagem: Inglês

10.1073/pnas.2021717118

1091-6490

Giuliana G. Repetti, Yuri Kim, Alexandre C. Pereira, Jodie Ingles, Mark W. Russell, Neal K. Lakdawala, Carolyn Y. Ho, Sharlene M. Day, Christopher Semsarian, Barbara McDonough, Steven R. DePalma, Daniel Quiat, Eric M. Green, Christine E. Seidman, Jonathan G. Seidman,

Studies on Chitinases and Chitosanases

Significance Genetics, notably pathogenic genetic variants in sarcomere protein genes, play a major role in development of hypertrophic cardiomyopathy (HCM). However, degree of contribution from epigenetic and environmental factors in clinical presentation of HCM is currently unclear. We investigated phenotypic differences between identical twins with pathogenic sarcomere protein gene variants and demonstrated their discordant HCM presentation despite having virtually identical genomes. Our study underscores the important contribution of epigenetics and environment in disease progression in genetically diagnosed HCM patients.