ACAD9 deficiency
Dernière mise à jour 18 Aug 2020
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ACAD9 deficiency is a condition that varies in severity and can cause muscle weakness (myopathy), heart problems, and intellectual disability. Nearly all affected individuals have a buildup of a chemical called lactic acid in the body (lactic acidosis). Additional signs and symptoms that affect other body systems occur in rare cases.
Description
ACAD9 deficiency is a condition that varies in severity and can cause muscle weakness (myopathy), heart problems, and intellectual disability. Nearly all affected individuals have a buildup of a chemical called lactic acid in the body (lactic acidosis). Additional signs and symptoms that affect other body systems occur in rare cases.
Mildly affected individuals with ACAD9 deficiency usually experience nausea and extreme fatigue in response to physical activity (exercise intolerance). People with ACAD9 deficiency who are moderately affected have low muscle tone (hypotonia) and weakness in the muscles used for movement (skeletal muscles). Severely affected individuals have brain dysfunction combined with myopathy (encephalomyopathy); these individuals usually also have an enlarged and weakened heart muscle (hypertrophic cardiomyopathy), which is typically fatal in infancy or childhood.
Individuals with ACAD9 deficiency who survive past early childhood often have intellectual disability and may develop seizures. Rare signs and symptoms of ACAD9 deficiency include movement disorders and problems with liver and kidney function.
Some individuals with ACAD9 deficiency have had improvement in muscle strength and a reduction in lactic acid levels with treatment.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Other names
Acyl-CoA dehydrogenase 9 deficiency
Deficiency of acyl-CoA dehydrogenase family member 9
Mitochondrial complex I deficiency due to ACAD9 deficiency
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Lectures complémentaires et références
- ACAD9 deficiency; MedlinePlus, National Library of Medicine.
- Aintablian HK, Narayanan V, Belnap N, Ramsey K, Grebe TA. An atypical presentation of ACAD9 deficiency: Diagnosis by whole exome sequencing broadens the phenotypic spectrum and alters treatment approach. Mol Genet Metab Rep. 2016 Dec 29;10:38-44. doi: 10.1016/j.ymgmr.2016.12.005. eCollection 2017 Mar.
- Collet M, Assouline Z, Bonnet D, Rio M, Iserin F, Sidi D, Goldenberg A, Lardennois C, Metodiev MD, Haberberger B, Haack T, Munnich A, Prokisch H, Rotig A. High incidence and variable clinical outcome of cardiac hypertrophy due to ACAD9 mutations in childhood. Eur J Hum Genet. 2016 Aug;24(8):1112-6. doi: 10.1038/ejhg.2015.264. Epub 2015 Dec 16.
- Dewulf JP, Barrea C, Vincent MF, De Laet C, Van Coster R, Seneca S, Marie S, Nassogne MC. Evidence of a wide spectrum of cardiac involvement due to ACAD9 mutations: Report on nine patients. Mol Genet Metab. 2016 Jul;118(3):185-189. doi: 10.1016/j.ymgme.2016.05.005. Epub 2016 May 13.
- Gerards M, van den Bosch BJ, Danhauser K, Serre V, van Weeghel M, Wanders RJ, Nicolaes GA, Sluiter W, Schoonderwoerd K, Scholte HR, Prokisch H, Rotig A, de Coo IF, Smeets HJ. Riboflavin-responsive oxidative phosphorylation complex I deficiency caused by defective ACAD9: new function for an old gene. Brain. 2011 Jan;134(Pt 1):210-9. doi: 10.1093/brain/awq273. Epub 2010 Oct 7.
- Haack TB, Danhauser K, Haberberger B, Hoser J, Strecker V, Boehm D, Uziel G, Lamantea E, Invernizzi F, Poulton J, Rolinski B, Iuso A, Biskup S, Schmidt T, Mewes HW, Wittig I, Meitinger T, Zeviani M, Prokisch H. Exome sequencing identifies ACAD9 mutations as a cause of complex I deficiency. Nat Genet. 2010 Dec;42(12):1131-4. doi: 10.1038/ng.706. Epub 2010 Nov 7.
- Nouws J, Nijtmans L, Houten SM, van den Brand M, Huynen M, Venselaar H, Hoefs S, Gloerich J, Kronick J, Hutchin T, Willems P, Rodenburg R, Wanders R, van den Heuvel L, Smeitink J, Vogel RO. Acyl-CoA dehydrogenase 9 is required for the biogenesis of oxidative phosphorylation complex I. Cell Metab. 2010 Sep 8;12(3):283-94. doi: 10.1016/j.cmet.2010.08.002.
- Nouws J, Te Brinke H, Nijtmans LG, Houten SM. ACAD9, a complex I assembly factor with a moonlighting function in fatty acid oxidation deficiencies. Hum Mol Genet. 2014 Mar 1;23(5):1311-9. doi: 10.1093/hmg/ddt521. Epub 2013 Oct 24.
- Schiff M, Haberberger B, Xia C, Mohsen AW, Goetzman ES, Wang Y, Uppala R, Zhang Y, Karunanidhi A, Prabhu D, Alharbi H, Prochownik EV, Haack T, Haberle J, Munnich A, Rotig A, Taylor RW, Nicholls RD, Kim JJ, Prokisch H, Vockley J. Complex I assembly function and fatty acid oxidation enzyme activity of ACAD9 both contribute to disease severity in ACAD9 deficiency. Hum Mol Genet. 2015 Jun 1;24(11):3238-47. doi: 10.1093/hmg/ddv074. Epub 2015 Feb 26.
- Schrank B, Schoser B, Klopstock T, Schneiderat P, Horvath R, Abicht A, Holinski-Feder E, Augustis S. Lifetime exercise intolerance with lactic acidosis as key manifestation of novel compound heterozygous ACAD9 mutations causing complex I deficiency. Neuromuscul Disord. 2017 May;27(5):473-476. doi: 10.1016/j.nmd.2017.02.005. Epub 2017 Feb 14.
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