Novel Homozygous Mitochondrial Calcium Uptake Protein 1 Variant (c.38T>C, p.Leu13Pro) in a 7-year-old Girl with Congenital Ptosis and Proximal Myopathy: Expanding the Phenotypic Spectrum.
ABSTRACT Myopathy with extrapyramidal signs (OMIM #615673) is a rare autosomal recessive mitochondrial disorder caused by biallelic loss-of-function variants in Mitochondrial calcium uptake protein 1 (MICU1), which encodes the gatekeeper of the mitochondrial calcium uniporter complex. We report a 7-year-old Indian girl...