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eRAM

encyclopedia of Rare Disease Annotation for Precision Medicine



  A rare case of centronuclear myopathy with DNM2 mutation: genotype-phenotype correlation

Centronuclear myopathy (CNM) is a group of rare genetic muscle disorders characterized by muscle fibers with centrally located nuclei. The most common forms of CNM have been attributed to X-linked recessive mutations in the MTM1 gene; autosomal-dominant mutations in the DNM2 gene-encoding dynamin-2, the BIN1 gene; and autosomal-recessive mutations in BIN1, RYR1, and TTN genes. In Jun 30, 2017, Amir Ghorbani Aghbolaghi and others published an article in << Autopsy CaseReports>> which title is “A rare case of centronuclear myopathy with DNM2 mutation: genotype–phenotype correlation”, described the case of a 17-year-old female who presented with proximal muscle weakness along with congenital anomalous pulmonary venous connection (which has not been described in previous cases of CNM), scoliosis, and lung disease without a significant family history. Histology, special stains, and electron microscope findings on her skeletal muscle biopsy showed CNM with the characteristic features of a DNM2 mutation, which was later confirmed by next-generation sequencing. This case expands the known clinical and pathological findings of CNM with DNM2 gene mutation.

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