Genetic Variant NDST1:p.Arg454Gly (chr5-150535808-C-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001543.5(NDST1):c.1360C>G(p.Arg454Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,826 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 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. R454C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

NDST1
NM_001543.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.39

Publications

4 publications found

Variant links:

Genes affected

NDST1 (HGNC:7680): (N-deacetylase and N-sulfotransferase 1) This gene encodes a member of the heparan sulfate/heparin GlcNAc N-deacetylase/ N-sulfotransferase family. The encoded enzyme is a type II transmembrane protein that resides in the Golgi apparatus. The encoded protein catalyzes the transfer of sulfate from 3'-phosphoadenosine 5'-phosphosulfate to nitrogen of glucosamine in heparan sulfate. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

NDST1 Gene-Disease associations (from GenCC):

intellectual disability, autosomal recessive 46
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NDST1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2990772).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NDST1	NM_001543.5 link	c.1360C>G	p.Arg454Gly	missense_variant	Exon 6 of 15	ENST00000261797.7	NP_001534.1	P52848-1A8K8T3
NDST1	NM_001301063.2 link	c.1360C>G	p.Arg454Gly	missense_variant	Exon 6 of 14		NP_001287992.1	P52848-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NDST1	ENST00000261797.7 link	c.1360C>G	p.Arg454Gly	missense_variant	Exon 6 of 15	1	NM_001543.5	ENSP00000261797.6		P52848-1
NDST1	ENST00000523767.5 link	c.1360C>G	p.Arg454Gly	missense_variant	Exon 6 of 14	2		ENSP00000428604.1		P52848-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461826

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.056

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.71

.;D

Eigen

Uncertain

0.19

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.96

D;D

M_CAP

Benign

0.012

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-0.89

PhyloP100

5.4

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.1

D;D

REVEL

Benign

0.12

Sift

Uncertain

0.027

D;D

Sift4G

Benign

0.11

T;T

Polyphen

0.090

B;B

Vest4

0.55

MutPred

0.43

Loss of MoRF binding (P = 0.0375);Loss of MoRF binding (P = 0.0375);

MVP

0.60

MPC

1.0

ClinPred

0.89

GERP RS

4.8

Varity_R

0.32

gMVP

0.74

Mutation Taster

=60/40

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over