X-54812204-C-G

Variant names:

• chrX-54812204-C-G
• rs878854404
• NM_177433.3:c.1038C>G

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_177433.3(MAGED2):​c.1038C>G​(p.Tyr346*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 23)
• Consequence: MAGED2 NM_177433.3 stop_gained
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.772
• Publications: 1 publications found

Genes affected

MAGED2 (HGNC:16353): (MAGE family member D2) This gene is a member of the MAGED gene family. The MAGED genes are clustered on chromosome Xp11. This gene is located in Xp11.2, a hot spot for X-linked intellectual disability (XLID). Mutations in this gene cause a form of transient antenatal Bartter's syndrome. This gene may also be involved in several types of cancer, including breast cancer and melanoma. The protein encoded by this gene is progressively recruited from the cytoplasm to the nucleoplasm during the interphase and after nucleolar stress and is thus thought to play a role in cell cycle regulation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2017]

MAGED2 Gene-Disease associations (from GenCC):

• Bartter disease type 5

  Inheritance: XL Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• antenatal Bartter syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-54812204-C-G is Pathogenic according to our data. Variant chrX-54812204-C-G is described in ClinVar as Pathogenic. ClinVar VariationId is 226031.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAGED2	NM_177433.3	c.1038C>G	p.Tyr346*	stop_gained	Exon 7 of 13	ENST00000375068.6	NP_803182.1
MAGED2	NM_014599.6	c.1038C>G	p.Tyr346*	stop_gained	Exon 7 of 13		NP_055414.2
MAGED2	NM_201222.3	c.1038C>G	p.Tyr346*	stop_gained	Exon 7 of 13		NP_957516.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAGED2	ENST00000375068.6	c.1038C>G	p.Tyr346*	stop_gained	Exon 7 of 13	1	NM_177433.3	ENSP00000364209.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 23

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Bartter disease type 5 Pathogenic:1

Sep 23, 2016

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Pathogenic	0.51
CADD	Pathogenic	35
DANN	Uncertain	0.99
FATHMM_MKL	Uncertain	0.82	D
PhyloP100		0.77
Vest4		0.51
GERP RS		0.82
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.15		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs878854404; hg19: chrX-54838637;