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@article{Domínguez:2018:10.1016/j.jacc.2018.08.2181,
author = {Domínguez, F and Cuenca, S and Biliska, Z and Toro, R and Villard, E and Barriales-Villa, R and Ochoa, JP and Asselbergs, F and Sammani, A and Franaszczyk, M and Akhtar, M and Coronado-Albi, MJ and Rangel-Sousa, D and Rodriguez-Palomares, JF and Jiménez-Jáimez, J and Garcia-Pinilla, JM and Ripoll-Vera, T and Mogollon, MV and Fontalba, A and Garcia-Medina, D and Doza, JP and de, Gonzalo-Calvo D and Cicerchia, M and Salazar-Mendiguchia, J and Pankuweit, S and Morris, Hey T and Mogensen, J and Barton, PJ and Charron, P and Elliott, P and Garcia-Pavia, P},
doi = {10.1016/j.jacc.2018.08.2181},
journal = {Journal of the American College of Cardiology},
pages = {2471--2481},
title = {Dilated cardiomyopathy due to BLC2-associated athanogene 3 (BAG3) mutations},
url = {http://dx.doi.org/10.1016/j.jacc.2018.08.2181},
volume = {72},
year = {2018}
}

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TY  - JOUR
AB  - BackgroundThe BAG3 (BLC2-associated athanogene 3) gene codes for an antiapoptotic protein located on the sarcomere Z-disc. Mutations in BAG3 are associated with dilated cardiomyopathy (DCM), but only a small number of cases have been reported to date, and the natural history of BAG3 cardiomyopathy is poorly understood.ObjectivesThis study sought to describe the phenotype and prognosis of BAG3 mutations in a large multicenter DCM cohort.MethodsThe study cohort comprised 129 individuals with a BAG3 mutation (62% males, 35.1 ± 15.0 years of age) followed at 18 European centers. Localization of BAG3 in cardiac tissue was analyzed in patients with truncating BAG3 mutations using immunohistochemistry.ResultsAt first evaluation, 57.4% of patients had DCM. After a median follow-up of 38 months (interquartile range: 7 to 95 months), 68.4% of patients had DCM and 26.1% who were initially phenotype-negative developed DCM. Disease penetrance in individuals >40 years of age was 80% at last evaluation, and there was a trend towards an earlier onset of DCM in men (age 34.6 ± 13.2 years vs. 40.7 ± 12.2 years; p = 0.053). The incidence of adverse cardiac events (death, left ventricular assist device, heart transplantation, and sustained ventricular arrhythmia) was 5.1% per year among individuals with DCM. Male sex, decreased left ventricular ejection fraction. and increased left ventricular end-diastolic diameter were associated with adverse cardiac events. Myocardial tissue from patients with a BAG3 mutation showed myofibril disarray and a relocation of BAG3 protein in the sarcomeric Z-disc.ConclusionsDCM caused by mutations in BAG3 is characterized by high penetrance in carriers >40 years of age and a high risk of progressive heart failure. Male sex, decreased left ventricular ejection fraction, and enlarged left ventricular end-diastolic diameter are associated with adverse outcomes in patients with BAG3 mutations.
AU  - Domínguez,F
AU  - Cuenca,S
AU  - Biliska,Z
AU  - Toro,R
AU  - Villard,E
AU  - Barriales-Villa,R
AU  - Ochoa,JP
AU  - Asselbergs,F
AU  - Sammani,A
AU  - Franaszczyk,M
AU  - Akhtar,M
AU  - Coronado-Albi,MJ
AU  - Rangel-Sousa,D
AU  - Rodriguez-Palomares,JF
AU  - Jiménez-Jáimez,J
AU  - Garcia-Pinilla,JM
AU  - Ripoll-Vera,T
AU  - Mogollon,MV
AU  - Fontalba,A
AU  - Garcia-Medina,D
AU  - Doza,JP
AU  - de,Gonzalo-Calvo D
AU  - Cicerchia,M
AU  - Salazar-Mendiguchia,J
AU  - Pankuweit,S
AU  - Morris,Hey T
AU  - Mogensen,J
AU  - Barton,PJ
AU  - Charron,P
AU  - Elliott,P
AU  - Garcia-Pavia,P
DO  - 10.1016/j.jacc.2018.08.2181
EP  - 2481
PY  - 2018///
SN  - 0735-1097
SP  - 2471
TI  - Dilated cardiomyopathy due to BLC2-associated athanogene 3 (BAG3) mutations
T2  - Journal of the American College of Cardiology
UR  - http://dx.doi.org/10.1016/j.jacc.2018.08.2181
UR  - http://hdl.handle.net/10044/1/63523
VL  - 72
ER  -

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