Variant chr22-39487795-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_002409.5(MGAT3):c.448C>G(p.Arg150Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000087 in 1,494,166 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 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: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

MGAT3
NM_002409.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.95

Variant links:

Genes affected

MGAT3 (HGNC:7046): (beta-1,4-mannosyl-glycoprotein 4-beta-N-acetylglucosaminyltransferase) There are believed to be over 100 different glycosyltransferases involved in the synthesis of protein-bound and lipid-bound oligosaccharides. The enzyme encoded by this gene transfers a GlcNAc residue to the beta-linked mannose of the trimannosyl core of N-linked oligosaccharides and produces a bisecting GlcNAc. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Jul 2008]

MGAT3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.18649098).

BS2

High AC in GnomAdExome4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MGAT3	NM_002409.5 linkuse as main transcript	c.448C>G	p.Arg150Gly	missense_variant	2/2	ENST00000341184.7
MGAT3	NM_001098270.2 linkuse as main transcript	c.448C>G	p.Arg150Gly	missense_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MGAT3	ENST00000341184.7 linkuse as main transcript	c.448C>G	p.Arg150Gly	missense_variant	2/2	1	NM_002409.5	P1
MGAT3	ENST00000429402.1 linkuse as main transcript	c.448C>G	p.Arg150Gly	missense_variant	2/2	4

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151780

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000745

AC:

AN:

1342272

Hom.:

Cov.:

AF XY:

0.00000761

AC XY:

AN XY:

657398

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:

0.00000946

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151894

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74238

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:

0.0000442

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000264

ExAC

AF:

0.00000939

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 28, 2024

The c.448C>G (p.R150G) alteration is located in exon 2 (coding exon 1) of the MGAT3 gene. This alteration results from a C to G substitution at nucleotide position 448, causing the arginine (R) at amino acid position 150 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.020

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.31

T;T

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.41

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.61

T;T

M_CAP

Benign

0.0075

MetaRNN

Benign

0.19

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

N;.

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-0.37

N;N

REVEL

Benign

0.24

Sift

Benign

0.072

T;D

Sift4G

Benign

0.38

T;.

Polyphen

0.96

D;.

Vest4

0.30

MutPred

0.27

Loss of MoRF binding (P = 0.014);Loss of MoRF binding (P = 0.014);

MVP

0.29

MPC

1.4

ClinPred

0.27

GERP RS

3.1

Varity_R

0.092

gMVP

0.91

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