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rs199474657

From SNPedia

Orientationplus
Stabilizedplus
Geno Mag Summary
(A;A) 0 common in clinvar
(G;G) 7 MELAS Syndrome
Make rs199474657(A;G)
ReferenceGRCh38.p7 38.3/150
ChromosomeMT
Position3243
is asnp
is mentioned by
dbSNPrs199474657
dbSNP (classic)rs199474657
ClinGenrs199474657
ebirs199474657
HLIrs199474657
Exacrs199474657
Gnomadrs199474657
Varsomers199474657
LitVarrs199474657
Maprs199474657
PheGenIrs199474657
Biobankrs199474657
1000 genomesrs199474657
hgdprs199474657
ensemblrs199474657
geneviewrs199474657
scholarrs199474657
googlers199474657
pharmgkbrs199474657
gwascentralrs199474657
openSNPrs199474657
23andMers199474657
SNPshotrs199474657
SNPdbers199474657
MSV3drs199474657
GWAS Ctlgrs199474657
Max Magnitude7

The mitochondrial tRNA for the amino acid leucine is encoded by mitochrondrial nucleotides 3230-3304, and this variant from within that region, rs199474657(G), also known as 3243A-G MTTL1, is the most common heteroplasmic mtDNA mutation associated with disease.

The disease is known as MELAS syndrome, and it is associated with numerous symptoms including diabetes, muscle stiffness/soreness and deafness.


ClinVar
Risk Rs199474657(G;G)
Alt Rs199474657(G;G)
Reference Rs199474657(A;A)
Significance Pathogenic
Disease Juvenile myopathy Muscle stiffness Age-related macular degeneration 2 Cyclical vomiting syndrome Cytochrome-c oxidase deficiency 3-Methylglutaconic aciduria MERRF/MELAS overlap syndrome Diabetes-deafness syndrome maternally transmitted Leigh syndrome Myoclonus with epilepsy with ragged red fibers not provided
Variation info
Gene
CLNDBN Juvenile myopathy, encephalopathy, lactic acidosis AND stroke Muscle stiffness, painful Age-related macular degeneration 2 Cyclical vomiting syndrome Cytochrome-c oxidase deficiency 3-Methylglutaconic aciduria MERRF/MELAS overlap syndrome Diabetes-deafness syndrome maternally transmitted Leigh syndrome Myoclonus with epilepsy with ragged red fibers not provided
Reversed 0
HGVS NC_012920.1:m.3243A>G
CLNSRC OMIM Allelic Variant
CLNACC RCV000010206.5, RCV000010208.5, RCV000010209.7, RCV000010210.5, RCV000010211.5, RCV000022901.5, RCV000022902.5, RCV000032997.5, RCV000143997.2, RCV000192054.1, RCV000224855.1,