[No authors listed]
INTRODUCTION:Emery-Dreifuss muscular dystrophy (EDMD) also known as humeroperoneal muscular dystrophy, is a skeletal myopathy characterized by the clinical triad of progressive muscular weakness, joint contractures, and cardiac disease. METHODOLOGY:Herein, we reported a family including two patients (the proband and his son) affected with progressive muscular dystrophy manifested by joint contractures without cardiac involvement ("EDMD-like" phenotype). Interestingly, electodiagnostic study results of the proband showed a neuropathic pattern different from the myopathic pattern in most muscular dystrophy patients. To identify the underlying genetic cause, genomic DNA of the proband was analyzed by WES using Agilent's SureSelect XT Human All Exon v5. RESULTS:A novel de novo pathogenic heterozygous missense mutation (NM_182914.2: c.4858GÂ >Â A; p.Ala1620Thr) of the SYNE2 gene, which had not been previously reported was identified by whole exome sequencing in the proband and by Sanger sequencing in his son. CONCLUSION:To the best knowledge, SYNE2 mutation was reported first by whole exome sequencing in a Korean family with EDMD-like features. We emphasized the role of genetic analysis using whole exome sequencing, which allows the correct recognition of this molecular diagnosis and brings together the neuromuscular spectrum of this complex clinical scenario, leading to proper clinical management.
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