Genetic Variant MAGEA8:p.Ser43Cys (chrX-149884400-C-G) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_005364.5(MAGEA8):c.128C>G(p.Ser43Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000471 in 1,209,397 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 23 hemizygotes in GnomAD. 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 0.000018 ( 0 hom., 0 hem., cov: 24)

Exomes 𝑓: 0.000050 ( 0 hom. 23 hem. )

Consequence

MAGEA8
NM_005364.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0400

Variant links:

Genes affected

MAGEA8 (HGNC:6806): (MAGE family member A8) This gene is a member of the MAGEA gene family. The members of this family encode proteins with 50 to 80% sequence identity to each other. The promoters and first exons of the MAGEA genes show considerable variability, suggesting that the existence of this gene family enables the same function to be expressed under different transcriptional controls. The MAGEA genes are clustered at chromosomal location Xq28. They have been implicated in some hereditary disorders, such as dyskeratosis congenita. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Oct 2009]

MAGEA8 links:

MAGEA8-AS1 (HGNC:45093): (MAGEA8 antisense RNA 1)

MAGEA8-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.032324165).

BS2

High Hemizygotes in GnomAdExome4 at 23 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAGEA8	NM_005364.5 link	c.128C>G	p.Ser43Cys	missense_variant	Exon 3 of 3	ENST00000286482.6	NP_005355.2	P43361B2R9W4
MAGEA8	NM_001166400.2 link	c.128C>G	p.Ser43Cys	missense_variant	Exon 4 of 4		NP_001159872.1	P43361B2R9W4
MAGEA8	NM_001166401.2 link	c.128C>G	p.Ser43Cys	missense_variant	Exon 3 of 3		NP_001159873.1	P43361B2R9W4
MAGEA8-AS1	NR_102703.1 link	n.81-1902G>C		intron_variant	Intron 1 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAGEA8	ENST00000286482.6 link	c.128C>G	p.Ser43Cys	missense_variant	Exon 3 of 3	1	NM_005364.5	ENSP00000286482.1		P43361

Frequencies

GnomAD3 genomes

AF:

0.0000178

AC:

AN:

112474

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34602

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:

0.000737

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000106

AC:

AN:

179948

Hom.:

AF XY:

0.0000774

AC XY:

AN XY:

64582

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:

0.00102

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000501

AC:

AN:

1096868

Hom.:

Cov.:

AF XY:

0.0000635

AC XY:

AN XY:

362276

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:

0.000982

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.0000178

AC:

AN:

112529

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34667

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:

0.000739

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.000124

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 08, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.128C>G (p.S43C) alteration is located in exon 4 (coding exon 1) of the MAGEA8 gene. This alteration results from a C to G substitution at nucleotide position 128, causing the serine (S) at amino acid position 43 to be replaced by a cysteine (C). 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

0.10

BayesDel_addAF

Benign

-0.67

BayesDel_noAF

Benign

-0.80

CADD

Benign

DANN

Benign

0.89

DEOGEN2

Benign

0.011

T;T;T

FATHMM_MKL

Benign

0.018

LIST_S2

Benign

0.48

.;T;.

M_CAP

Benign

0.00082

MetaRNN

Benign

0.032

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.5

M;M;M

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.0

D;D;D

REVEL

Benign

0.039

Sift

Benign

0.048

D;D;D

Sift4G

Uncertain

0.049

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.052

MVP

0.47

MPC

0.42

ClinPred

0.48

GERP RS

0.12

Varity_R

0.16

gMVP

0.17

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