chr3-25729184-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_ModerateBP6BP7

The NM_018297.4(NGLY1):c.1560C>T(p.Gly520Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000642 in 1,548,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. G520G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00067 ( 0 hom. )

Consequence

NGLY1
NM_018297.4 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 1.41

Publications

1 publications found

Variant links:

Genes affected

NGLY1 (HGNC:17646): (N-glycanase 1) This gene encodes an enzyme that catalyzes hydrolysis of an N(4)-(acetyl-beta-D-glucosaminyl) asparagine residue to N-acetyl-beta-D-glucosaminylamine and a peptide containing an aspartate residue. The encoded enzyme may play a role in the proteasome-mediated degradation of misfolded glycoproteins. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Feb 2009]

NGLY1 Gene-Disease associations (from GenCC):

congenital disorder of deglycosylation 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
NGLY1-deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia

NGLY1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.35).

BP6

Variant 3-25729184-G-A is Benign according to our data. Variant chr3-25729184-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 474213.We mark this variant Likely_benign, oryginal submission is: [Conflicting_classifications_of_pathogenicity].

BP7

Synonymous conserved (PhyloP=1.41 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NGLY1	NM_018297.4 link	c.1560C>T	p.Gly520Gly	synonymous_variant	Exon 10 of 12	ENST00000280700.10	NP_060767.2	Q96IV0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NGLY1	ENST00000280700.10 link	c.1560C>T	p.Gly520Gly	synonymous_variant	Exon 10 of 12	1	NM_018297.4	ENSP00000280700.5		Q96IV0-1

Frequencies

GnomAD3 genomes

AF:

0.000355

AC:

AN:

151996

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

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:

0.000603

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000298

AC:

AN:

228448

AF XY:

0.000258

show subpopulations

Gnomad AFR exome

AF:

0.000435

Gnomad AMR exome

AF:

0.000205

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000633

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000510

Gnomad OTH exome

AF:

0.000185

GnomAD4 exome

AF:

0.000674

AC:

941

AN:

1396834

Hom.:

Cov.:

AF XY:

0.000657

AC XY:

456

AN XY:

693792

show subpopulations

African (AFR)

AF:

0.000193

AC:

AN:

31066

American (AMR)

AF:

0.000200

AC:

AN:

40068

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24308

East Asian (EAS)

AF:

0.0000270

AC:

AN:

37018

South Asian (SAS)

AF:

0.00

AC:

AN:

75384

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50976

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5540

European-Non Finnish (NFE)

AF:

0.000831

AC:

894

AN:

1075438

Other (OTH)

AF:

0.000561

AC:

AN:

57036

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

Heterozygous variant carriers

136

181

226

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000355

AC:

AN:

151996

Hom.:

Cov.:

AF XY:

0.000337

AC XY:

AN XY:

74224

show subpopulations

African (AFR)

AF:

0.000314

AC:

AN:

41384

American (AMR)

AF:

0.00

AC:

AN:

15246

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000603

AC:

AN:

67984

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000427

Hom.:

Bravo

AF:

0.000374

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Apr 19, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis, which includes splice predictors and evolutionary conservation, suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown. -

Congenital disorder of deglycosylation

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

NGLY1-related disorder

Benign:1

Apr 15, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.35

CADD

Benign

(source)

DANN

Benign

0.64

PhyloP100

1.4

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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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chr3-25729184-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over