Variant 4-177433238-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM2PP3_StrongPP5_Moderate

The NM_000027.4(AGA):c.916T>C(p.Cys306Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,770 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 Likely pathogenic (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

AGA
NM_000027.4 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 8.65

Variant links:

Genes affected

AGA (HGNC:318): (aspartylglucosaminidase) This gene encodes a member of the N-terminal nucleophile (Ntn) hydrolase family of proteins. The encoded preproprotein is proteolytically processed to generate alpha and beta chains that comprise the mature enzyme. This enzyme is involved in the catabolism of N-linked oligosaccharides of glycoproteins. It cleaves asparagine from N-acetylglucosamines as one of the final steps in the lysosomal breakdown of glycoproteins. Mutations in this gene are associated with the lysosomal storage disease aspartylglycosaminuria that results in progressive neurodegeneration. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is subject to proteolytic processing. [provided by RefSeq, Nov 2015]

AGA links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 10 ACMG points.

PM1

In a chain Glycosylasparaginase beta chain (size 140) in uniprot entity ASPG_HUMAN there are 6 pathogenic changes around while only 0 benign (100%) in NM_000027.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.99

PP5

Variant 4-177433238-A-G is Pathogenic according to our data. Variant chr4-177433238-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 221.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr4-177433238-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
AGA	NM_000027.4 linkuse as main transcript	c.916T>C	p.Cys306Arg	missense_variant	8/9	ENST00000264595.7	NP_000018.2
AGA	NM_001171988.2 linkuse as main transcript	c.886T>C	p.Cys296Arg	missense_variant	8/9		NP_001165459.1
AGA	NR_033655.2 linkuse as main transcript	n.902T>C		non_coding_transcript_exon_variant	7/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AGA	ENST00000264595.7 linkuse as main transcript	c.916T>C	p.Cys306Arg	missense_variant	8/9	1	NM_000027.4	ENSP00000264595	P1
AGA	ENST00000502310.5 linkuse as main transcript			downstream_gene_variant		5		ENSP00000423798

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251426

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135886

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461770

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727180

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Aspartylglucosaminuria

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Apr 10, 2023	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Dec 15, 1991	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.90

Eigen

Pathogenic

0.95

Eigen_PC

Pathogenic

0.91

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.21

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.83

MutationAssessor

Pathogenic

3.5

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.72

PROVEAN

Pathogenic

-5.4

REVEL

Pathogenic

0.93

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.99

MutPred

0.95

Gain of methylation at C306 (P = 0.0153);

MVP

1.0

MPC

0.70

ClinPred

0.97

GERP RS

6.0

Varity_R

0.99

gMVP

1.0

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