Genetic Variant MAGEB2:p.Arg23Gln (chrX-30218648-G-A) – 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_002364.5(MAGEB2):c.68G>A(p.Arg23Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0000027 ( 0 hom. 2 hem. )

Failed GnomAD Quality Control

Consequence

MAGEB2
NM_002364.5 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.0740

Variant links:

Genes affected

MAGEB2 (HGNC:6809): (MAGE family member B2) This gene is a member of the MAGEB gene family. The members of this family have their entire coding sequences located in the last exon, and the encoded proteins show 50 to 68% sequence identity to each other. The promoters and first exons of the MAGEB genes show considerable variability, suggesting that the existence of this gene family enables the same function to be expressed under different transcriptional controls. This gene is localized in the DSS (dosage-sensitive sex reversal) critical region. It is expressed in testis and placenta, and in a significant fraction of tumors of various histological types. The MAGEB genes are clustered on chromosome Xp22-p21. [provided by RefSeq, Jul 2008]

MAGEB2 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=0.02463308).

BP6

Variant X-30218648-G-A is Benign according to our data. Variant chrX-30218648-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3542052.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAGEB2	NM_002364.5 link	c.68G>A	p.Arg23Gln	missense_variant	Exon 2 of 2	ENST00000378988.5	NP_002355.2	O15479Q53G50
MAGEB2	XM_011545512.2 link	c.68G>A	p.Arg23Gln	missense_variant	Exon 2 of 2		XP_011543814.1	O15479

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAGEB2	ENST00000378988.5 link	c.68G>A	p.Arg23Gln	missense_variant	Exon 2 of 2	1	NM_002364.5	ENSP00000368273.4		O15479

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000557

AC:

AN:

179512

Hom.:

AF XY:

0.0000156

AC XY:

AN XY:

64184

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:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000274

AC:

AN:

1096345

Hom.:

Cov.:

AF XY:

0.00000553

AC XY:

AN XY:

361755

show subpopulations

Gnomad4 AFR exome

AF:

0.0000379

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000186

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Aug 28, 2024

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-1.1

CADD

Benign

0.28

DANN

Benign

0.34

DEOGEN2

Benign

0.0019

FATHMM_MKL

Benign

0.0035

LIST_S2

Benign

0.18

M_CAP

Benign

0.0018

MetaRNN

Benign

0.025

MetaSVM

Benign

-0.94

MutationAssessor

Benign

-1.9

PrimateAI

Benign

0.31

PROVEAN

Benign

2.5

REVEL

Benign

0.029

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.045

MutPred

0.38

Loss of methylation at R23 (P = 0.012);

MVP

0.18

MPC

0.0024

ClinPred

0.024

GERP RS

0.96

Varity_R

0.031

gMVP

0.068

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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