NM_000512.5:c.1019G>C
Variant names:
Variant summary
Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM2PM5
The NM_000512.5(GALNS):c.1019G>C(p.Gly340Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G340D) has been classified as Likely pathogenic.
Frequency
Genomes: not found (cov: 34)
Consequence
GALNS
NM_000512.5 missense
NM_000512.5 missense
Scores
8
11
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: 4.54
Publications
0 publications found
Genes affected
GALNS (HGNC:4122): (galactosamine (N-acetyl)-6-sulfatase) This gene encodes N-acetylgalactosamine-6-sulfatase which is a lysosomal exohydrolase required for the degradation of the glycosaminoglycans, keratan sulfate, and chondroitin 6-sulfate. Sequence alterations including point, missense and nonsense mutations, as well as those that affect splicing, result in a deficiency of this enzyme. Deficiencies of this enzyme lead to Morquio A syndrome, a lysosomal storage disorder. [provided by RefSeq, Jul 2008]
GALNS Gene-Disease associations (from GenCC):
- mucopolysaccharidosis type 4AInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
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ACMG classification
Classification was made for transcript
Our verdict: Likely_pathogenic. The variant received 6 ACMG points.
PM1
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 12 uncertain in NM_000512.5
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr16-88826822-C-T is described in CliVar as Pathogenic/Likely_pathogenic. Clinvar id is 18403.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes Cov.: 34
GnomAD3 genomes
Cov.:
34
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome Cov.: 34
GnomAD4 genome
Cov.:
34
ClinVar
Not reported inComputational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
DANN
Benign
DEOGEN2
Uncertain
D
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D
MetaSVM
Uncertain
T
MutationAssessor
Benign
N
PhyloP100
PrimateAI
Benign
T
PROVEAN
Benign
N
REVEL
Uncertain
Sift
Benign
T
Sift4G
Benign
T
Polyphen
B
Vest4
MutPred
Loss of catalytic residue at L345 (P = 0.1096);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
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