rs200561967

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_018297.4(NGLY1):c.622C>T(p.Gln208*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000548 in 1,460,798 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 (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

NGLY1
NM_018297.4 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4O:1

Conservation

PhyloP100: 3.94

Publications

12 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: Pathogenic. The variant received 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 3-25751134-G-A is Pathogenic according to our data. Variant chr3-25751134-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 221578.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NGLY1	NM_018297.4 link	c.622C>T	p.Gln208*	stop_gained	Exon 4 of 12	ENST00000280700.10	NP_060767.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NGLY1	ENST00000280700.10 link	c.622C>T	p.Gln208*	stop_gained	Exon 4 of 12	1	NM_018297.4	ENSP00000280700.5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000400

AC:

AN:

250110

AF XY:

0.00000740

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1460798

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726698

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33420

American (AMR)

AF:

0.00

AC:

AN:

44500

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26094

East Asian (EAS)

AF:

0.00

AC:

AN:

39640

South Asian (SAS)

AF:

0.00

AC:

AN:

86044

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53374

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.00000720

AC:

AN:

1111612

Other (OTH)

AF:

0.00

AC:

AN:

60358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.412

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.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Congenital disorder of deglycosylation

Pathogenic:2Other:1

Jan 13, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Gln208*) in the NGLY1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in NGLY1 are known to be pathogenic (PMID: 24651605). This variant is present in population databases (rs200561967, gnomAD 0.0009%). This premature translational stop signal has been observed in individual(s) with clinical features of congenital disorder of glycosylation type 1V (PMID: 25900930). ClinVar contains an entry for this variant (Variation ID: 221578). For these reasons, this variant has been classified as Pathogenic. -

Jan 07, 2016

Medical Biochemical Genetics, National Human Genome institute, NIH, National Institutes of Health

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

GeneReviews

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

Mild impairment -

not provided

Pathogenic:1

Mar 20, 2019

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The Q208X nonsense variant in the NGLY1 gene has been reported previously in two siblings with features of a NGLY1-related disorder who also had a second variant on the opposite allele (He et al., 2015). This pathogenic variant is predicted to cause loss of normal protein function either through protein truncation or nonsense-mediated mRNA decay. It is not observed at a significant frequency in large population cohorts (Lek et al., 2016). We interpret Q208X as a pathogenic variant. -

Congenital disorder of deglycosylation 1

Pathogenic:1

May 16, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.49

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Uncertain

0.67

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.80

PhyloP100

3.9

Vest4

0.16

GERP RS

2.8

PromoterAI

-0.011

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=3/197

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over