Abstract
To investigate the clinical, pathological and genetic characteristics in a family with autosomal dominant Emery-Dreifuss muscular dystrophy (AD-EDMD). Clinical data and skeletal muscle specimens were collected from two patients (the proband and her daughter) for pathological analysis. DNA samples of the proband and her family members (7 persons from 3 generations) were obtained for PCR amplification and direct DNA sequencing of the lamin A/C (LMNA) gene. Haplotype analysis was performed after the identification of mutation. The proband had typical clinical manifestation of EDMD: joint contracture, progressive muscle weakness and atrophy and cardiac conduction dysfunction. Muscular pathology revealed myopathic changes combined with slight neuropathic changes. A heterozygous missense mutation 1583 (C to G)(T528R) was identified in exon 9 of the LMNA gene in the two patients, but not in other family members. Haplotype analysis indicated that the proband and her daughter shared the same causative haplotype. This is the first report of the phenotype and genotype of AD-EDMD in Chinese.
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