Myopathy with extrapyramidal signs

Definition:

Myopathy with extrapyramidal signs (MPXPS) is an autosomal recessive disorder characterized by proximal myopathy, learning difficulties, and a progressive extrapyramidal movement disorder. Mutations in MICU1 have been reported in patients with this disease. MICU1 encodes a regulatory subunit of the Ca2+ uniporter complex in the inner mitochondrial membrane.

References:

[1]. Clare V Logan, et al. Loss-of-function mutations in MICU1 cause a brain and muscle disorder linked to primary alterations in mitochondrial calcium signaling. Nat Genet. 2014 Feb;46(2):188-93. [Content Brief]

[2]. Sara Musa, et al. A Middle Eastern Founder Mutation Expands the Genotypic and Phenotypic Spectrum of Mitochondrial MICU1 Deficiency: A Report of 13 Patients. JIMD Rep. 2019;43:79-83. [Content Brief]

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