Genetic Variant NGLY1:p.Arg401* (chr3-25733931-T-A) – ACMG Classification: Pathogenic (16 pts)

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_018297.4(NGLY1):c.1201A>T(p.Arg401*) variant causes a stop gained change. The variant allele was found at a frequency of 0.000399 in 1,613,840 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 (★★). Synonymous variant affecting the same amino acid position (i.e. R401R) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 30)

Exomes 𝑓: 0.00041 ( 0 hom. )

Consequence

NGLY1
NM_018297.4 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:18O:1

Conservation

PhyloP100: 4.69

Publications

38 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, G2P, Labcorp Genetics (formerly Invitae)
NGLY1-deficiency
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

NGLY1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1

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

PP5

Variant 3-25733931-T-A is Pathogenic according to our data. Variant chr3-25733931-T-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 50962.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018297.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NGLY1	NM_018297.4	MANE Select	c.1201A>T	p.Arg401*	stop_gained	Exon 8 of 12	NP_060767.2
NGLY1	NM_001145293.2		c.1147A>T	p.Arg383*	stop_gained	Exon 8 of 12	NP_001138765.1	Q96IV0-2
NGLY1	NM_001145294.2		c.1075A>T	p.Arg359*	stop_gained	Exon 8 of 12	NP_001138766.1	Q96IV0-5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NGLY1	ENST00000280700.10	TSL:1 MANE Select	c.1201A>T	p.Arg401*	stop_gained	Exon 8 of 12	ENSP00000280700.5	Q96IV0-1
NGLY1	ENST00000428257.5	TSL:1	c.1147A>T	p.Arg383*	stop_gained	Exon 8 of 12	ENSP00000387430.1	Q96IV0-2
NGLY1	ENST00000308710.9	TSL:1	c.1138A>T	p.Arg380*	stop_gained	Exon 8 of 12	ENSP00000307980.5	A0A0C4DFP4

Frequencies

GnomAD3 genomes

AF:

0.000296

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000289

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:

0.000485

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000183

AC:

AN:

251186

AF XY:

0.000192

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000387

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000410

AC:

599

AN:

1461602

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

293

AN XY:

727104

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39670

South Asian (SAS)

AF:

0.00

AC:

AN:

86236

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000515

AC:

573

AN:

1111862

Other (OTH)

AF:

0.000348

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.455

Heterozygous variant carriers

111

139

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

120

<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:

0.000296

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

AN XY:

74370

show subpopulations

African (AFR)

AF:

0.000289

AC:

AN:

41470

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000485

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000455

Hom.:

Bravo

AF:

0.000306

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000157

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000415

ClinVar

ClinVar submissions

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (7)

Congenital disorder of deglycosylation 1 (6)

Congenital disorder of deglycosylation (6)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.63

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

0.73

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.99

PhyloP100

4.7

Vest4

0.31

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=0/200

disease causing (ClinVar)

(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

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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