SUCLA2-related mitochondrial DNA depletion syndrome
Last updated 19 Jul 2024
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SUCLA2-related mitochondrial DNA (mtDNA) depletion syndrome is an inherited disorder that affects the early development of the brain. Affected infants typically develop weak muscle tone (hypotonia) in the first few months of life. In these infants, hypotonia can delay the development of motor skills such as lifting the head and rolling over. Children with SUCLA2-related mtDNA depletion syndrome typically have difficulty eating and may require a feeding tube; as a result, they have difficulty growing and gaining weight as expected (failure to thrive).
Description
SUCLA2-related mitochondrial DNA (mtDNA) depletion syndrome is an inherited disorder that affects the early development of the brain. Affected infants typically develop weak muscle tone (hypotonia) in the first few months of life. In these infants, hypotonia can delay the development of motor skills such as lifting the head and rolling over. Children with SUCLA2-related mtDNA depletion syndrome typically have difficulty eating and may require a feeding tube; as a result, they have difficulty growing and gaining weight as expected (failure to thrive).
Additional features of SUCLA2-related mtDNA depletion syndrome can include uncontrolled movements (dystonia), hearing loss, muscle wasting (atrophy), and intellectual disabilities. In most affected children, a substance called methylmalonic acid builds up in the blood.
People with SUCLA2-related mtDNA depletion syndrome typically have a shortened lifespan. Approximately 30 percent of individuals with SUCLA2-related mtDNA depletion syndrome do not survive past childhood.
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
Mitochondrial DNA depletion syndrome 5 (encephalomyopathic with or without methylmalonic aciduria)
Mitochondrial DNA depletion syndrome, encephalomyopathic form with or without methylmalonic aciduria, autosomal recessive, SUCLA2-related
MTDPS5
Succinate-CoA ligase deficiency
SUCLA2 deficiency
SUCLA2-related mitochondrial DNA depletion syndrome, encephalomyopathic form with methylmalonic aciduria
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Further reading and references
- SUCLA2-related mitochondrial DNA depletion syndrome; MedlinePlus, National Library of Medicine.
- Alberio S, Mineri R, Tiranti V, Zeviani M. Depletion of mtDNA: syndromes and genes. Mitochondrion. 2007 Feb-Apr;7(1-2):6-12. doi: 10.1016/j.mito.2006.11.010. Epub 2006 Dec 5.
- Carrozzo R, Dionisi-Vici C, Steuerwald U, Lucioli S, Deodato F, Di Giandomenico S, Bertini E, Franke B, Kluijtmans LA, Meschini MC, Rizzo C, Piemonte F, Rodenburg R, Santer R, Santorelli FM, van Rooij A, Vermunt-de Koning D, Morava E, Wevers RA. SUCLA2 mutations are associated with mild methylmalonic aciduria, Leigh-like encephalomyopathy, dystonia and deafness. Brain. 2007 Mar;130(Pt 3):862-74. doi: 10.1093/brain/awl389. Epub 2007 Feb 14.
- Carrozzo R, Verrigni D, Rasmussen M, de Coo R, Amartino H, Bianchi M, Buhas D, Mesli S, Naess K, Born AP, Woldseth B, Prontera P, Batbayli M, Ravn K, Joensen F, Cordelli DM, Santorelli FM, Tulinius M, Darin N, Duno M, Jouvencel P, Burlina A, Stangoni G, Bertini E, Redonnet-Vernhet I, Wibrand F, Dionisi-Vici C, Uusimaa J, Vieira P, Osorio AN, McFarland R, Taylor RW, Holme E, Ostergaard E. Succinate-CoA ligase deficiency due to mutations in SUCLA2 and SUCLG1: phenotype and genotype correlations in 71 patients. J Inherit Metab Dis. 2016 Mar;39(2):243-52. doi: 10.1007/s10545-015-9894-9. Epub 2015 Oct 16.
- El-Hattab AW, Scaglia F. SUCLA2-Related Mitochondrial DNA Depletion Syndrome, Encephalomyopathic Form with Methylmalonic Aciduria. 2009 May 26 [updated 2023 Sep 28]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK6803/
- Elpeleg O, Miller C, Hershkovitz E, Bitner-Glindzicz M, Bondi-Rubinstein G, Rahman S, Pagnamenta A, Eshhar S, Saada A. Deficiency of the ADP-forming succinyl-CoA synthase activity is associated with encephalomyopathy and mitochondrial DNA depletion. Am J Hum Genet. 2005 Jun;76(6):1081-6. doi: 10.1086/430843. Epub 2005 Apr 22.
- Ostergaard E, Hansen FJ, Sorensen N, Duno M, Vissing J, Larsen PL, Faeroe O, Thorgrimsson S, Wibrand F, Christensen E, Schwartz M. Mitochondrial encephalomyopathy with elevated methylmalonic acid is caused by SUCLA2 mutations. Brain. 2007 Mar;130(Pt 3):853-61. doi: 10.1093/brain/awl383. Epub 2007 Feb 7.
- Ostergaard E. Disorders caused by deficiency of succinate-CoA ligase. J Inherit Metab Dis. 2008 Apr;31(2):226-9. doi: 10.1007/s10545-008-0828-7. Epub 2008 Apr 4.
- Spinazzola A, Invernizzi F, Carrara F, Lamantea E, Donati A, Dirocco M, Giordano I, Meznaric-Petrusa M, Baruffini E, Ferrero I, Zeviani M. Clinical and molecular features of mitochondrial DNA depletion syndromes. J Inherit Metab Dis. 2009 Apr;32(2):143-58. doi: 10.1007/s10545-008-1038-z. Epub 2008 Dec 27.
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