2-74465145-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006302.3(MOGS):c.103G>A(p.Gly35Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000294 in 1,531,494 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

MOGS
NM_006302.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.271

Variant links:

Genes affected

MOGS (HGNC:24862): (mannosyl-oligosaccharide glucosidase) This gene encodes the first enzyme in the N-linked oligosaccharide processing pathway. The enzyme cleaves the distal alpha-1,2-linked glucose residue from the Glc(3)-Man(9)-GlcNAc(2) oligosaccharide precursor. This protein is located in the lumen of the endoplasmic reticulum. Defects in this gene are a cause of type IIb congenital disorder of glycosylation (CDGIIb). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

MOGS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.068428814).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MOGS	NM_006302.3 linkuse as main transcript	c.103G>A	p.Gly35Ser	missense_variant	1/4	ENST00000448666.7
MOGS	NM_001146158.2 linkuse as main transcript	c.-58-158G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MOGS	ENST00000448666.7 linkuse as main transcript	c.103G>A	p.Gly35Ser	missense_variant	1/4	1	NM_006302.3	P1	Q13724-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152228

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

125692

Hom.:

AF XY:

0.0000579

AC XY:

AN XY:

69114

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000105

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000305

AC:

AN:

1379266

Hom.:

Cov.:

AF XY:

0.0000264

AC XY:

AN XY:

680602

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000381

Gnomad4 OTH exome

AF:

0.0000174

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74370

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 23, 2023

The c.103G>A (p.G35S) alteration is located in exon 1 (coding exon 1) of the MOGS gene. This alteration results from a G to A substitution at nucleotide position 103, causing the glycine (G) at amino acid position 35 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

MOGS-congenital disorder of glycosylation

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 19, 2022

This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 35 of the MOGS protein (p.Gly35Ser). This variant is present in population databases (no rsID available, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with MOGS-related conditions. ClinVar contains an entry for this variant (Variation ID: 534244). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.55

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.0033

T;T;T;.;.

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.95

FATHMM_MKL

Benign

0.11

M_CAP

Benign

0.047

MetaRNN

Benign

0.068

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N;.;.;.

MutationTaster

Benign

0.56

D;N;N;N

PrimateAI

Uncertain

0.75

Polyphen

0.0070

B;B;.;.;.

Vest4

0.20, 0.13

MutPred

0.26

Gain of glycosylation at G35 (P = 8e-04);Gain of glycosylation at G35 (P = 8e-04);Gain of glycosylation at G35 (P = 8e-04);Gain of glycosylation at G35 (P = 8e-04);Gain of glycosylation at G35 (P = 8e-04);

MVP

0.19

MPC

0.23

ClinPred

0.056

GERP RS

1.8

RBP_binding_hub_radar

0.92

RBP_regulation_power_radar

2.2

Varity_R

0.031

gMVP

0.52

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