Genetic Variant NGLY1:p.Ala130Thr (chr3-25764170-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_018297.4(NGLY1):c.388G>A(p.Ala130Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000122 in 1,614,164 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 1 hom. )

Consequence

NGLY1
NM_018297.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: -2.89

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 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.004665822).

BP6

Variant 3-25764170-C-T is Benign according to our data. Variant chr3-25764170-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 578124.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NGLY1	NM_018297.4 link	c.388G>A	p.Ala130Thr	missense_variant	Exon 3 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.388G>A	p.Ala130Thr	missense_variant	Exon 3 of 12	1	NM_018297.4	ENSP00000280700.5		Q96IV0-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00186

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000239

AC:

AN:

251366

Hom.:

AF XY:

0.000309

AC XY:

AN XY:

135840

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 SAS exome

AF:

0.00196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000129

AC:

188

AN:

1461882

Hom.:

Cov.:

AF XY:

0.000162

AC XY:

118

AN XY:

727240

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00209

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00186

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000663

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.000239

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Congenital disorder of deglycosylation

Benign:1

Jun 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

NGLY1-related disorder

Benign:1

Mar 29, 2024

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

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.0080

DANN

Benign

0.62

DEOGEN2

Benign

0.090

.;T;.;T;.;.

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.0068

LIST_S2

Benign

0.73

T;T;T;T;T;T

M_CAP

Benign

0.0041

MetaRNN

Benign

0.0047

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.41

N;N;N;.;.;.

PrimateAI

Benign

0.21

PROVEAN

Benign

0.020

N;N;N;N;N;N

REVEL

Benign

0.032

Sift

Benign

0.49

T;T;T;T;T;T

Sift4G

Benign

0.43

T;T;T;T;T;.

Polyphen

0.0020

B;B;B;.;.;.

Vest4

0.091

MutPred

0.11

Loss of glycosylation at P135 (P = 0.0163);Loss of glycosylation at P135 (P = 0.0163);Loss of glycosylation at P135 (P = 0.0163);.;.;.;

MVP

0.24

MPC

0.035

ClinPred

0.015

GERP RS

-11

Varity_R

0.018

gMVP

0.25

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