Amish, Mennonite, and Hutterite
Genetic Disorder Database

Glycine encephalopathy

Disorder
OMIM #: #605899  (Click to access OMIM database)
Disorder: Glycine encephalopathy 
Also known as: GCE
HYPERGLYCINEMIA, NONKETOTIC
NKH  
Clinical
Phenotype: encephalopathy, developmental delay, lethargy, seizures, hypotonia, myoclonus, aggressive behaviour, impulsitivity, hyperglycaemia, sudden death 
Seen In: Amish
Old Order Mennonite
Old Colony Mennonite
Unknown/Other Mennonite
Hutterite
Remarks: Autosomal recessive 
Mutations
1   Amish  
Gene: GLDC
Base Change: c.128delA
Amino Acid Change: p.Asp43Alafs*48
2   Amish  
Gene: GLDC
Base Change: c.2186delC
Amino Acid Change: p.Ala729Glufs*3
3     
Gene: AMT
Base Change: C>T, at nucleotide 230
Amino Acid Change: ser 77 --> leu
Last updated: 2022-11-04 

References
Crowgey EL, Washburn MC, Kolb EA, Puffenberger EG. (2019) Development of a Novel Next-Generation Sequencing Assay for Carrier Screening in Old Order Amish and Mennonite Populations of Pennsylvania. J Mol Diagn Jul;21(4):687-694.
PubMed ID: 31028937 

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