rs557217245

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4BP6_Moderate

The NM_000512.5(GALNS):​c.1336C>T​(p.Arg446Trp) variant causes a missense change. The variant allele was found at a frequency of 0.000127 in 1,612,826 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

GALNS
NM_000512.5 missense

Scores

6
9
4

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 4.77
Variant links:
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.28775442).
BP6
Variant 16-88822617-G-A is Benign according to our data. Variant chr16-88822617-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 528324.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
GALNSNM_000512.5 linkuse as main transcriptc.1336C>T p.Arg446Trp missense_variant 12/14 ENST00000268695.10 NP_000503.1 P34059Q96I49

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
GALNSENST00000268695.10 linkuse as main transcriptc.1336C>T p.Arg446Trp missense_variant 12/141 NM_000512.5 ENSP00000268695.5 P34059

Frequencies

GnomAD3 genomes
AF:
0.0000789
AC:
12
AN:
152126
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00145
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000268
AC:
67
AN:
249854
Hom.:
0
AF XY:
0.000310
AC XY:
42
AN XY:
135576
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00209
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000267
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000132
AC:
193
AN:
1460582
Hom.:
1
Cov.:
32
AF XY:
0.000184
AC XY:
134
AN XY:
726562
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.000115
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00194
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000162
Gnomad4 OTH exome
AF:
0.0000663
GnomAD4 genome
AF:
0.0000788
AC:
12
AN:
152244
Hom.:
0
Cov.:
32
AF XY:
0.0000806
AC XY:
6
AN XY:
74450
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00145
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000588
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000665
Hom.:
0
Bravo
AF:
0.0000416
ExAC
AF:
0.000297
AC:
36
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Mucopolysaccharidosis, MPS-IV-A Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 03, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.047
T
BayesDel_noAF
Pathogenic
0.15
CADD
Pathogenic
33
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.85
D
Eigen
Uncertain
0.55
Eigen_PC
Uncertain
0.40
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.97
D
M_CAP
Pathogenic
0.35
D
MetaRNN
Benign
0.29
T
MetaSVM
Uncertain
0.78
D
MutationAssessor
Pathogenic
3.5
M
PrimateAI
Uncertain
0.62
T
PROVEAN
Pathogenic
-4.8
D
REVEL
Uncertain
0.64
Sift
Uncertain
0.010
D
Sift4G
Uncertain
0.010
D
Polyphen
1.0
D
Vest4
0.70
MutPred
0.61
Loss of disorder (P = 0.0259);
MVP
1.0
MPC
0.51
ClinPred
0.47
T
GERP RS
3.6
Varity_R
0.39
gMVP
0.79

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs557217245; hg19: chr16-88889025; API