Alternative titles and symbols : Cpeo with ragged-red fibers; Ophthalmoplegia, progressive external, with ragged-red fibers; Oculocraniosomatic syndrome; Mitochondrial cytopathy; Chronic progressive external ophthalmoplegia with myopathy; Cpeo with myopathy; Ophthalmoplegia, pigmentary degeneration of retina, and cardiomyopathy; Ophthalmoplegia-plus syndrome;
Inheritance : Mitochondrial;
Molecular basis : Caused by mutation in the mitochondrial tRNA (leucine)-1 gene (MTTL1, 590050.0011); Caused by deletion of multiple genes in the mitochondrial DNA;
Laboratory abnormalities : Decreased serum and muscle coenzyme Q; Lactic acidosis; Decreased cerebrospinal fluid folic acid; Mitochondrial DNA deletions; Increased cerebrospinal fluid (CSF) protein ( 100mg/dl);