Fumarase deficiency
Dernière mise à jour 18 Aug 2020
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Fumarase deficiency is a condition that primarily affects the nervous system, especially the brain. Affected infants may have an abnormally small head size (microcephaly), abnormal brain structure, severe developmental delay, weak muscle tone (hypotonia), and failure to gain weight and grow at the expected rate (failure to thrive). They may also experience seizures. Some people with this disorder have unusual facial features, including a prominent forehead (frontal bossing), low-set ears, a small jaw (micrognathia), widely spaced eyes (ocular hypertelorism), and a depressed nasal bridge. An enlarged liver and spleen (hepatosplenomegaly) may also be associated with this disorder, as well as an excess of red blood cells (polycythemia) or deficiency of white blood cells (leukopenia) in infancy. Affected individuals usually survive only a few months, but a few have lived into early adulthood.
Description
Fumarase deficiency is a condition that primarily affects the nervous system, especially the brain. Affected infants may have an abnormally small head size (microcephaly), abnormal brain structure, severe developmental delay, weak muscle tone (hypotonia), and failure to gain weight and grow at the expected rate (failure to thrive). They may also experience seizures. Some people with this disorder have unusual facial features, including a prominent forehead (frontal bossing), low-set ears, a small jaw (micrognathia), widely spaced eyes (ocular hypertelorism), and a depressed nasal bridge. An enlarged liver and spleen (hepatosplenomegaly) may also be associated with this disorder, as well as an excess of red blood cells (polycythemia) or deficiency of white blood cells (leukopenia) in infancy. Affected individuals usually survive only a few months, but a few have lived into early adulthood.
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
Fumarate hydratase deficiency
Fumaric aciduria
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Lectures complémentaires et références
- Fumarase deficiency; MedlinePlus, National Library of Medicine.
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- Allegri G, Fernandes MJ, Scalco FB, Correia P, Simoni RE, Llerena JC Jr, de Oliveira ML. Fumaric aciduria: an overview and the first Brazilian case report. J Inherit Metab Dis. 2010 Aug;33(4):411-9. doi: 10.1007/s10545-010-9134-2. Epub 2010 Jun 15.
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- Deschauer M, Gizatullina Z, Schulze A, Pritsch M, Knoppel C, Knape M, Zierz S, Gellerich FN. Molecular and biochemical investigations in fumarase deficiency. Mol Genet Metab. 2006 Jun;88(2):146-52. doi: 10.1016/j.ymgme.2006.01.007. Epub 2006 Feb 28.
- Ezgu F, Krejci P, Wilcox WR. Mild clinical presentation and prolonged survival of a patient with fumarase deficiency due to the combination of a known and a novel mutation in FH gene. Gene. 2013 Jul 25;524(2):403-6. doi: 10.1016/j.gene.2013.03.026. Epub 2013 Apr 20.
- Kerrigan JF, Aleck KA, Tarby TJ, Bird CR, Heidenreich RA. Fumaric aciduria: clinical and imaging features. Ann Neurol. 2000 May;47(5):583-8.
- Ottolenghi C, Hubert L, Allanore Y, Brassier A, Altuzarra C, Mellot-Draznieks C, Bekri S, Goldenberg A, Veyrieres S, Boddaert N, Barbier V, Valayannopoulos V, Slama A, Chretien D, Ricquier D, Marret S, Frebourg T, Rabier D, Munnich A, de Keyzer Y, Toulhoat H, de Lonlay P. Clinical and biochemical heterogeneity associated with fumarase deficiency. Hum Mutat. 2011 Sep;32(9):1046-52. doi: 10.1002/humu.21534. Epub 2011 Jul 12.
- Picaud S, Kavanagh KL, Yue WW, Lee WH, Muller-Knapp S, Gileadi O, Sacchettini J, Oppermann U. Structural basis of fumarate hydratase deficiency. J Inherit Metab Dis. 2011 Jun;34(3):671-6. doi: 10.1007/s10545-011-9294-8. Epub 2011 Mar 29.
- Raimundo N, Ahtinen J, Fumic K, Baric I, Remes AM, Renkonen R, Lapatto R, Suomalainen A. Differential metabolic consequences of fumarate hydratase and respiratory chain defects. Biochim Biophys Acta. 2008 May;1782(5):287-94. doi: 10.1016/j.bbadis.2008.01.008. Epub 2008 Feb 14.
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