TY - JOUR
T1 - Phenotypic Manifestations of Arrhythmogenic Cardiomyopathy in Children and Adolescents
AU - DeWitt, Elizabeth S.
AU - Chandler, Stephanie Frances
AU - Hylind, Robyn J.
AU - Beausejour Ladouceur, Virginie
AU - Blume, Elizabeth D.
AU - VanderPluym, Christina
AU - Powell, Andrew J.
AU - Fynn-Thompson, Francis
AU - Roberts, A. E.
AU - Sanders, Stephen P.
AU - Bezzerides, Vassilios
AU - Lakdawala, Neal K.
AU - MacRae, Calum A.
AU - Abrams, Dominic J.
N1 - Publisher Copyright:
© 2019 American College of Cardiology Foundation
PY - 2019/7/23
Y1 - 2019/7/23
N2 - Background: Arrhythmogenic cardiomyopathy (ACM) is a variably penetrant disease increasingly identified in young patients. Objectives: This study sought to describe the diverse phenotype, genotype, and outcomes in pediatric and adolescent patients. Methods: Records from 1999 to 2016 were reviewed for individuals age <21 years with a consistent personal or family history. Patients were categorized by right ventricular (RV), left dominant (LD), or biventricular subtypes using 2010 Task Force Criteria or proposed features of LD disease, encompassing electrocardiographic, structural, histological, and arrhythmic characteristics. Genetic variants classified as pathogenic and/or likely pathogenic by 2015 American College of Medical Genetics and Genomics criteria in recognized disease-associated genes were included. Results: Manifest disease was evident in 32 patients (age 15.1 ± 3.8 years), of whom 22 were probands, including 16 RV, 7 LD, and 9 biventricular ACM. Nondiagnostic features were seen in 5 of 15 family members. RV disease was associated with cardiac arrest and ventricular tachycardia (p = 0.02) and prevalence of PKP2 variants (p < 0.01), whereas biventricular disease was associated with a younger age of onset (p = 0.02). LD ACM was associated with variants in DSP and LMNA, and biventricular ACM with more a diverse etiology in desmosomal genes. Cardiac arrest was observed in 5 probands (age 15.3 ± 1.9 years) and ventricular tachycardia in 10 (age 16.6 ± 2.7 years), 6 probands, and 4 family members. Features suggestive of myocardial inflammation were seen in 6 patients, with ventricular tachycardia and/or cardiac arrest in 3 patients. Cardiac transplantation was performed in 10 patients. There were no deaths. In RV and biventricular disease, electrocardiographic preceded imaging features, whereas the reverse was seen in LD disease. Conclusions: ACM in the young has highly varied phenotypic expression incorporating life-threatening arrhythmia, heart failure, and myocardial inflammation. Increased awareness of early onset, aggressive disease has important implications for patient management and familial screening.
AB - Background: Arrhythmogenic cardiomyopathy (ACM) is a variably penetrant disease increasingly identified in young patients. Objectives: This study sought to describe the diverse phenotype, genotype, and outcomes in pediatric and adolescent patients. Methods: Records from 1999 to 2016 were reviewed for individuals age <21 years with a consistent personal or family history. Patients were categorized by right ventricular (RV), left dominant (LD), or biventricular subtypes using 2010 Task Force Criteria or proposed features of LD disease, encompassing electrocardiographic, structural, histological, and arrhythmic characteristics. Genetic variants classified as pathogenic and/or likely pathogenic by 2015 American College of Medical Genetics and Genomics criteria in recognized disease-associated genes were included. Results: Manifest disease was evident in 32 patients (age 15.1 ± 3.8 years), of whom 22 were probands, including 16 RV, 7 LD, and 9 biventricular ACM. Nondiagnostic features were seen in 5 of 15 family members. RV disease was associated with cardiac arrest and ventricular tachycardia (p = 0.02) and prevalence of PKP2 variants (p < 0.01), whereas biventricular disease was associated with a younger age of onset (p = 0.02). LD ACM was associated with variants in DSP and LMNA, and biventricular ACM with more a diverse etiology in desmosomal genes. Cardiac arrest was observed in 5 probands (age 15.3 ± 1.9 years) and ventricular tachycardia in 10 (age 16.6 ± 2.7 years), 6 probands, and 4 family members. Features suggestive of myocardial inflammation were seen in 6 patients, with ventricular tachycardia and/or cardiac arrest in 3 patients. Cardiac transplantation was performed in 10 patients. There were no deaths. In RV and biventricular disease, electrocardiographic preceded imaging features, whereas the reverse was seen in LD disease. Conclusions: ACM in the young has highly varied phenotypic expression incorporating life-threatening arrhythmia, heart failure, and myocardial inflammation. Increased awareness of early onset, aggressive disease has important implications for patient management and familial screening.
KW - arrhythmogenic right ventricular cardiomyopathy
KW - desmosomes
KW - diagnostic criteria
KW - genetics
KW - pediatrics
KW - phenotype
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U2 - 10.1016/j.jacc.2019.05.022
DO - 10.1016/j.jacc.2019.05.022
M3 - Article
C2 - 31319917
AN - SCOPUS:85068259257
SN - 0735-1097
VL - 74
SP - 346
EP - 358
JO - Journal of the American College of Cardiology
JF - Journal of the American College of Cardiology
IS - 3
ER -