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Pathway Description
Hyperglycinemia, Non-Ketotic
Homo sapiens
Disease Pathway
Created: 2013-08-29
Last Updated: 2022-10-24
Nonketotic hyperglycinemia (GCE) is a rare inborn error of metabolism (IEM) and autosomal recessive disorder caused by a defective GLDC gene. GLDC encodes for the enzymes involved in the conversion of glycine to CO2, NH3 and hydroxymethyltetrahydrofolic acid. Most patients have abnormally low oxalate excretion in the urine. Other symptoms start presenting in the first few days of life and include lethargy, hypotonia, and myoclonic jerks, and progressing to apnea. GCE often leads to death, and those who regain spontaneous respiration develop intractable seizures and profound mental retardation. Currently there is no cure for Nonketotic hyperglycinemia therefore treatment involves managing symptoms. Frequency for Nonketotic hyperglycinemia has not been documented worldwide.
References
Hyperglycinemia, Non-Ketotic References
[Metagen: HYPERGLYCINEMIA, NON-KETOTIC](http://metagene.de/program/d.prg?id_d=207)
[OMIM: 605899](http://omim.org/entry/605899})
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Glycine and Serine Metabolism References
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Pubmed: 14702039
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Pubmed: 10591208
Binzak BA, Vockley JG, Jenkins RB, Vockley J: Structure and analysis of the human dimethylglycine dehydrogenase gene. Mol Genet Metab. 2000 Mar;69(3):181-7. doi: 10.1006/mgme.2000.2980.
Pubmed: 10767172
Binzak BA, Wevers RA, Moolenaar SH, Lee YM, Hwu WL, Poggi-Bach J, Engelke UF, Hoard HM, Vockley JG, Vockley J: Cloning of dimethylglycine dehydrogenase and a new human inborn error of metabolism, dimethylglycine dehydrogenase deficiency. Am J Hum Genet. 2001 Apr;68(4):839-47. doi: 10.1086/319520. Epub 2001 Feb 28.
Pubmed: 11231903
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Pubmed: 15164053
Kure S, Narisawa K, Tada K: Structural and expression analyses of normal and mutant mRNA encoding glycine decarboxylase: three-base deletion in mRNA causes nonketotic hyperglycinemia. Biochem Biophys Res Commun. 1991 Feb 14;174(3):1176-82. doi: 10.1016/0006-291x(91)91545-n.
Pubmed: 1996985
Kume A, Koyata H, Sakakibara T, Ishiguro Y, Kure S, Hiraga K: The glycine cleavage system. Molecular cloning of the chicken and human glycine decarboxylase cDNAs and some characteristics involved in the deduced protein structures. J Biol Chem. 1991 Feb 15;266(5):3323-9.
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Yang X, Wang Z, Li X, Liu B, Liu M, Liu L, Chen S, Ren M, Wang Y, Yu M, Wang B, Zou J, Zhu WG, Yin Y, Gu W, Luo J: SHMT2 Desuccinylation by SIRT5 Drives Cancer Cell Proliferation. Cancer Res. 2018 Jan 15;78(2):372-386. doi: 10.1158/0008-5472.CAN-17-1912. Epub 2017 Nov 27.
Pubmed: 29180469
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Pubmed: 29452640
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Pubmed: 3278312
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