A Truncating De Novo Point Mutation in a Young Infant with Severe Menkes Disease

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Abstract

Menkes disease is a rare neurodegenerative disorder caused by mutations in ATP7A gene. Deficiency in copper-dependent enzymes results in the unique kinky hair appearance, neurodegeneration, developmental delay, seizures, failure to thrive and other connective tissue or organ abnormalities. Other than biochemical tests, DNA-based diagnosis is now playing an important role. More than two hundred mutations in ATP7A gene were identified. Early copper supplementation can help improve neurological symptoms, but not non-neurological problems. Further molecular studies are needed to identify additional mutation types and to understand the mechanism of pathogenesis. This may help in discovering the possible treatment measures to cure the disease. We present a case with the clinical features and biochemical findings, abnormal brain magnetic resonance imaging as well as the effects of treatment with copper-histidine. Direct sequencing of ATP7A gene revealed a de novo point mutation which resulted in an early stop codon with truncated protein.

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Lin, Y. J., Ho, C. S., Hsu, C. H., Lin, J. L., Chuang, C. K., Tsai, J. D., … Lin, S. P. (2017). A Truncating De Novo Point Mutation in a Young Infant with Severe Menkes Disease. Pediatrics and Neonatology, 58(1), 89–92. https://doi.org/10.1016/j.pedneo.2014.05.008

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