Genetic Variant MOGS:p.Gln798His (chr2-74461395-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_006302.3(MOGS):c.2394G>C(p.Gln798His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,822 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q798Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MOGS
NM_006302.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.632

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

MOGS-congenital disorder of glycosylation
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, ClinGen

MOGS links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006302.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MOGS	NM_006302.3	MANE Select	c.2394G>C	p.Gln798His	missense	Exon 4 of 4	NP_006293.2	A0A384MDR6
	MOGS	NM_001146158.2		c.2076G>C	p.Gln692His	missense	Exon 5 of 5	NP_001139630.1	Q13724-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MOGS	ENST00000448666.7	TSL:1 MANE Select	c.2394G>C	p.Gln798His	missense	Exon 4 of 4	ENSP00000410992.3	Q13724-1
MOGS	ENST00000452063.7	TSL:1	c.2076G>C	p.Gln692His	missense	Exon 5 of 5	ENSP00000388201.2	Q13724-2
MOGS	ENST00000690565.1		c.2100G>C	p.Gln700His	missense	Exon 5 of 5	ENSP00000510501.1	A0A8I5KTK5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461822

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727206

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53348

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112012

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.55

BayesDel_addAF

Uncertain

0.091

BayesDel_noAF

Benign

-0.11

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.049

Eigen

Uncertain

0.31

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.040

MetaRNN

Uncertain

0.71

MetaSVM

Benign

-0.79

MutationAssessor

Uncertain

2.7

PhyloP100

0.63

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.1

REVEL

Uncertain

0.34

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0040

Polyphen

1.0

Vest4

0.78

MutPred

0.74

Loss of MoRF binding (P = 0.1186)

MVP

0.76

MPC

0.83

ClinPred

0.98

GERP RS

1.6

Varity_R

0.49

gMVP

0.83

Mutation Taster

=25/75

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over