Rosenbohm A, Süssmuth SD, Kassubek J, Müller HP, Pontes C, Abicht A, Bulst S, Ludolph AC, Pinkhardt E. Novel ETFDH mutation and imaging findings in an adult with glutaric aciduria type II.
Muscle Nerve 2014;
49:446-50. [PMID:
23893693 DOI:
10.1002/mus.23979]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2013] [Indexed: 11/10/2022]
Abstract
INTRODUCTION
Glutaric aciduria type II (GAII) is a rare autosomal recessive disorder with variable clinical course. The disorder is caused by a defect in the mitochondrial electron transfer flavoprotein or the electron transfer flavoprotein dehydrogenase (ETFDH).
METHODS
We performed clinical characterization, brain and whole body MRI, muscle histopathology, and genetic analysis of the ETFDH gene in a young woman.
RESULTS
She presented with rhabdomyolysis and severe quadriparesis. We identified a novel homozygous missense mutation in ETFDH (c.1544G>T, p.Ser515Ile). Body fat MRI revealed a large amount of subcutaneous fat but no increase in visceral fat despite steatosis of liver and muscle. Diffusion tensor imaging (DTI) of cerebral MRI revealed reduced directionality of the white matter tracts. Histopathological findings showed lipid storage myopathy.
CONCLUSIONS
In this study, we highlight diagnostic clues and body fat MRI in this rare metabolic disorder.
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