Methylcobalamin deficiency type G [DS:H01285] Homocystinuria-megaloblastic anemia, cblE complementation type (HMAE) Homocystinuria-megaloblastic anemia, cblG complementation type (HMAG) Homocystinuria-megaloblastic anemia cblD type (HMAD)
Description
Homocystinuria (HC) is a metabolic disorder due to cystathionine beta-synthase deficiency leading to various malfunctions in the eyes and the central nervous, skeletal, and vascular systems.
Category
Inherited metabolic disorder
Brite
Human diseases in ICD-11 classification [BR:br08403]
05 Endocrine, nutritional or metabolic diseases
Metabolic disorders
Inborn errors of metabolism
5C50 Inborn errors of amino acid or other organic acid metabolism
H00183 Homocystinuria
Pathway-based classification of diseases [BR:br08402]
Amino acid metabolism
nt06030 Methionine metabolism
H00183 Homocystinuria
Cofactor/vitamin metabolism
nt06538 Cobalamin transport and metabolism
H00183 Homocystinuria
Watkins D, Ru M, Hwang HY, Kim CD, Murray A, Philip NS, Kim W, Legakis H, Wai T, Hilton JF, Ge B, Dore C, Hosack A, Wilson A, Gravel RA, Shane B, Hudson TJ, Rosenblatt DS
Title
Hyperhomocysteinemia due to methionine synthase deficiency, cblG: structure of the MTR gene, genotype diversity, and recognition of a common mutation, P1173L.
Neural tube defects (NTDs) represent a common group of severe congenital malformations that result from failure of neural tube closure during early development. It has been demonstrated that folate status is a significant determinant of NTD risk. The genetic studies have shown the relationships of folate-related genes. Maternal supplementation with folic acid is the most effective measure known to prevent NTDs.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
20 Developmental anomalies
Structural developmental anomalies primarily affecting one body system
Structural developmental anomalies of the nervous system
LA02 Spina bifida
H00262 Neural tube defects, folate-sensitive
Pathway-based classification of diseases [BR:br08402]
Cofactor/vitamin metabolism
nt06038 Folate metabolism
H00262 Neural tube defects, folate-sensitive
nt06538 Cobalamin transport and metabolism
H00262 Neural tube defects, folate-sensitive