Unclassifiable arrhythmic cardiomyopathy associated with Emery-Dreifuss caused by a mutation in FHL1.

Abstract:

:Emery-Dreifuss muscular dystrophy (EDMD) is a heterogeneous genetic disorder characterized by peripheral muscular weakness often associated with dilated cardiomyopathy. We characterize clinically a large family with a mutation in FHL1 gene (p.Cys255Ser). Penetrance was 44%, 100% for males and 18% for females. The heart was the main organ involved. Affected adult males had mild hypertrophy, systolic dysfunction and restriction with non-dilated ventricles. Carriers had significant QTc prolongation. The proband presented with resuscitated cardiac arrest. There were two transplants. Pathological study of explanted heart showed fibrofatty replacement and scarring consistent with arrhythmogenic cardiomyopathy and prominent left ventricular trabeculations. Myopathic involvement was evident in all males. Females had no significant neuromuscular disease. Mutations in FHL1 cause unclassifiable cardiomyopathy with coexisting EDMD. Prognosis is poor and systolic impairment and arrhythmias are frequent. Thrombopenia and raised creatine phosphokinase should raise suspicion of an FHL-1 disorder in X-linked cardiomyopathy.

journal_name

Clin Genet

journal_title

Clinical genetics

authors

San Román I,Navarro M,Martínez F,Albert L,Polo L,Guardiola J,García-Molina E,Muñoz-Esparza C,López-Ayala JM,Sabater-Molina M,Gimeno JR

doi

10.1111/cge.12760

subject

Has Abstract

pub_date

2016-08-01 00:00:00

pages

171-6

issue

2

eissn

0009-9163

issn

1399-0004

journal_volume

90

pub_type

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