Coenzyme Q10 deficiency is a heterogeneous autosomal recessive mitochondrial encephalomyopathy. There is no clear genotype-phenotype correlation. Clinical symptoms include the central nervous system, muscles, heart, kidney and growth.
Five major clinical phenotypes can be distinguished: (1) encephalomyopathic form with ataxia and seizures; (2) multisystem infantile form with encephalopathy, cardiomyopathy, and nephropathy; (3) cerebellar form with cerebellar atrophy and consequentially ataxia; (4) Leigh syndrome with growth retardation; and (5) isolated myopathic form.
In about 50% of cases, ubiquinon levels are low in muscle cells.
The disorder can be successfully treated in some cases by Coenzyme Q10 substitution. The dosis is usually 5 to 30 mg/kg. In some cases, however, if severe neurological symptoms are present, doses of up to 3g/d can be used in adults.
|Hereditary metabolic diseases|
|Coenzyme Q10 deficiency|
|Coenzyme Q10 deficiency 1|
|Coenzyme Q10 deficiency 2|
|Coenzyme Q10 deficiency 3|
|Coenzyme Q10 deficiency 4|
|Coenzyme Q10 deficiency 5|
|Coenzyme Q10 deficiency 6|
|Congenital disorder of glycosylation|
|Disorders of cobalamin metabolism|
|Disorders of iron metabolism|
|Disorders of urate metabolism|
|Disturbances in phosphate metabolism|
|Disturbances of glucose metabolism|
|Hereditary disorders protein metabolism|
|Hereditary lipid disorders|
|Hyperzincemia and hypercalprotectinemia|
|Lysosomal storage disease|
|Methionine adenosyltransferase deficiency|
|Urea cycle disorders|
Iiizumi M et al. (2002) Isolation of a novel gene, CABC1, encoding a mitochondrial protein that is highly homologous to yeast activity of bc1 complex.
Heeringa SF et al. (2011) COQ6 mutations in human patients produce nephrotic syndrome with sensorineural deafness.
Duncan AJ et al. (2009) A nonsense mutation in COQ9 causes autosomal-recessive neonatal-onset primary coenzyme Q10 deficiency: a potentially treatable form of mitochondrial disease.
Johnson A et al. (2005) COQ9, a new gene required for the biosynthesis of coenzyme Q in Saccharomyces cerevisiae.
Loftus BJ et al. (1999) Genome duplications and other features in 12 Mb of DNA sequence from human chromosome 16p and 16q.
Peng M et al. (2008) Primary coenzyme Q deficiency in Pdss2 mutant mice causes isolated renal disease.
López LC et al. (2006) Leigh syndrome with nephropathy and CoQ10 deficiency due to decaprenyl diphosphate synthase subunit 2 (PDSS2) mutations.
None (2013) Mutations in COQ2 in familial and sporadic multiple-system atrophy.
Diomedi-Camassei F et al. (2007) COQ2 nephropathy: a newly described inherited mitochondriopathy with primary renal involvement.
Hara K et al. (2007) Multiplex families with multiple system atrophy.
López-Martín JM et al. (2007) Missense mutation of the COQ2 gene causes defects of bioenergetics and de novo pyrimidine synthesis.
Quinzii C et al. (2006) A mutation in para-hydroxybenzoate-polyprenyl transferase (COQ2) causes primary coenzyme Q10 deficiency.
Salviati L et al. (2005) Infantile encephalomyopathy and nephropathy with CoQ10 deficiency: a CoQ10-responsive condition.
Forsgren M et al. (2004) Isolation and functional expression of human COQ2, a gene encoding a polyprenyl transferase involved in the synthesis of CoQ.
Mollet J et al. (2007) Prenyldiphosphate synthase, subunit 1 (PDSS1) and OH-benzoate polyprenyltransferase (COQ2) mutations in ubiquinone deficiency and oxidative phosphorylation disorders.
Saiki R et al. (2005) Characterization of solanesyl and decaprenyl diphosphate synthases in mice and humans.
Quinzii CM et al. (2010) Reactive oxygen species, oxidative stress, and cell death correlate with level of CoQ10 deficiency.
Lagier-Tourenne C et al. (2008) ADCK3, an ancestral kinase, is mutated in a form of recessive ataxia associated with coenzyme Q10 deficiency.
Mollet J et al. (2008) CABC1 gene mutations cause ubiquinone deficiency with cerebellar ataxia and seizures.
Auré K et al. (2004) Progression despite replacement of a myopathic form of coenzyme Q10 defect.
Lamperti C et al. (2003) Cerebellar ataxia and coenzyme Q10 deficiency.
Lai CH et al. (2000) Identification of novel human genes evolutionarily conserved in Caenorhabditis elegans by comparative proteomics.
OMIM.ORG articleOmim 609825
Orphanet articleOrphanet ID 139485
Wikipedia articleWikipedia EN (Coenzyme_Q10_deficiency)