Genetic Variant ASNSD1:p.Gly177Arg (chr2-189666661-G-C) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_019048.4(ASNSD1):c.529G>C(p.Gly177Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

ASNSD1
NM_019048.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.47

Variant links:

Genes affected

ASNSD1 (HGNC:24910): (asparagine synthetase domain containing 1) Predicted to enable asparagine synthase (glutamine-hydrolyzing) activity. Predicted to be involved in asparagine biosynthetic process and glutamine metabolic process. [provided by Alliance of Genome Resources, Apr 2022]

ASNSD1 links:

ENSG00000286165 (HGNC:):

ENSG00000286165 links:

ASDURF (HGNC:53619): (ASNSD1 upstream open reading frame) Predicted to be located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ASDURF links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.856

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ASNSD1	NM_019048.4 link	c.529G>C	p.Gly177Arg	missense_variant	Exon 4 of 6	ENST00000260952.9	NP_061921.2	Q9NWL6-1
ASNSD1	NM_001353497.2 link	c.529G>C	p.Gly177Arg	missense_variant	Exon 3 of 5		NP_001340426.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ASNSD1	ENST00000260952.9 link	c.529G>C	p.Gly177Arg	missense_variant	Exon 4 of 6	1	NM_019048.4	ENSP00000260952.4		Q9NWL6-1
ENSG00000286165	ENST00000606910.5 link	c.221-535G>C		intron_variant	Intron 3 of 4	3		ENSP00000476091.1		U3KQP1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000798

AC:

AN:

250562

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135664

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461760

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152110

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 01, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.529G>C (p.G177R) alteration is located in exon 4 (coding exon 1) of the ASNSD1 gene. This alteration results from a G to C substitution at nucleotide position 529, causing the glycine (G) at amino acid position 177 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.87

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.15

T;T

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.99

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.069

MetaRNN

Pathogenic

0.86

D;D

MetaSVM

Uncertain

-0.014

MutationAssessor

Pathogenic

3.7

H;.

PrimateAI

Uncertain

0.63

PROVEAN

Pathogenic

-6.7

D;D

REVEL

Uncertain

0.64

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0030

D;D

Polyphen

1.0

D;.

Vest4

0.84

MutPred

0.73

Loss of glycosylation at S176 (P = 0.0643);Loss of glycosylation at S176 (P = 0.0643);

MVP

0.68

MPC

0.58

ClinPred

0.99

GERP RS

5.8

Varity_R

0.83

gMVP

0.89

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

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over