Genetic Variant NM_000027.4:c.*718G>A (chr4-177430990-C-T) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_000027.4(AGA):c.*718G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00143 in 454,016 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0034 ( 3 hom., cov: 33)

Exomes 𝑓: 0.00046 ( 0 hom. )

Consequence

AGA
NM_000027.4 3_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.77

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

aspartylglucosaminuria
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), ClinGen, Myriad Women’s Health

AGA links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.76).

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00335 (510/152228) while in subpopulation AFR AF = 0.0113 (469/41550). AF 95% confidence interval is 0.0104. There are 3 homozygotes in GnomAd4. There are 239 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000027.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
AGA	NM_000027.4	MANE Select	c.*718G>A	3_prime_UTR	Exon 9 of 9	NP_000018.2	P20933
AGA	NM_001171988.2		c.*718G>A	3_prime_UTR	Exon 9 of 9	NP_001165459.1
AGA	NR_033655.2		n.1745G>A	non_coding_transcript_exon	Exon 8 of 8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AGA	ENST00000264595.7	TSL:1 MANE Select	c.*718G>A		3_prime_UTR	Exon 9 of 9	ENSP00000264595.2	P20933

Frequencies

GnomAD3 genomes

AF:

0.00334

AC:

508

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0113

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00170

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:

0.000103

Gnomad OTH

AF:

0.00382

GnomAD2 exomes

AF:

0.000759

AC:

AN:

130446

AF XY:

0.000730

show subpopulations

Gnomad AFR exome

AF:

0.0118

Gnomad AMR exome

AF:

0.000370

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000282

Gnomad OTH exome

AF:

0.000999

GnomAD4 exome

AF:

0.000464

AC:

140

AN:

301788

Hom.:

Cov.:

AF XY:

0.000390

AC XY:

AN XY:

171990

show subpopulations

African (AFR)

AF:

0.0103

AC:

AN:

8554

American (AMR)

AF:

0.000477

AC:

AN:

27274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

10786

East Asian (EAS)

AF:

0.00

AC:

AN:

9210

South Asian (SAS)

AF:

0.00

AC:

AN:

59648

European-Finnish (FIN)

AF:

0.00

AC:

AN:

12364

Middle Eastern (MID)

AF:

0.00261

AC:

AN:

1150

European-Non Finnish (NFE)

AF:

0.000145

AC:

AN:

158760

Other (OTH)

AF:

0.000926

AC:

AN:

14042

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

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

AF:

0.00335

AC:

510

AN:

152228

Hom.:

Cov.:

AF XY:

0.00321

AC XY:

239

AN XY:

74416

show subpopulations

African (AFR)

AF:

0.0113

AC:

469

AN:

41550

American (AMR)

AF:

0.00170

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68008

Other (OTH)

AF:

0.00378

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.507

Heterozygous variant carriers

124

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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

Alfa

AF:

0.00210

Hom.:

Bravo

AF:

0.00397

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Aspartylglucosaminuria (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

0.35

(source)

DANN

Benign

0.85

PhyloP100

-1.8

Mutation Taster

=100/0

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over