Genetic Variant VCX3A:p.Glu171Gly (chrX-6533794-T-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_016379.4(VCX3A):c.512A>G(p.Glu171Gly) 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. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0 ( 0 hom., 0 hem., cov: 18)

Failed GnomAD Quality Control

Consequence

VCX3A
NM_016379.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.95

Variant links:

Genes affected

VCX3A (HGNC:18159): (variable charge X-linked 3A) This gene belongs to the VCX/Y gene family, which has multiple members on both X and Y chromosomes, and all are expressed exclusively in male germ cells. The X-linked members are clustered on chromosome Xp22 and Y-linked members are two identical copies of the gene within a palindromic region on Yq11. The family members share a high degree of sequence identity, with the exception that a 30-bp unit is tandemly repeated in X-linked members but occurs only once in Y-linked members. The VCX gene cluster is polymorphic in terms of copy number; different individuals may have a different number of VCX genes. VCX/Y genes encode small and highly charged proteins of unknown function. The presence of a putative bipartite nuclear localization signal suggests that VCX/Y members are nuclear proteins. This gene contains 8 repeats of the 30-bp unit. [provided by RefSeq, Jul 2008]

VCX3A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15715098).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VCX3A	NM_016379.4 link	c.512A>G	p.Glu171Gly	missense_variant	Exon 3 of 3	ENST00000381089.7	NP_057463.2	Q9NNX9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VCX3A	ENST00000381089.7 link	c.512A>G	p.Glu171Gly	missense_variant	Exon 3 of 3	1	NM_016379.4	ENSP00000370479.3		Q9NNX9
VCX3A	ENST00000398729.1 link	c.452A>G	p.Glu151Gly	missense_variant	Exon 4 of 4	5		ENSP00000381713.1		E7ESE9

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

100356

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

26602

FAILED QC

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

100356

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

26602

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:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.512A>G (p.E171G) alteration is located in exon 3 (coding exon 2) of the VCX3A gene. This alteration results from a A to G substitution at nucleotide position 512, causing the glutamic acid (E) at amino acid position 171 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

0.14

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.79

CADD

Benign

DANN

Benign

0.93

DEOGEN2

Benign

0.011

T;.

FATHMM_MKL

Benign

0.0092

LIST_S2

Benign

0.42

T;T

M_CAP

Benign

0.0010

MetaRNN

Benign

0.16

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

L;.

PrimateAI

Uncertain

0.49

PROVEAN

Benign

-1.9

N;D

REVEL

Benign

0.017

Sift

Uncertain

0.0080

D;D

Sift4G

Uncertain

0.0060

D;D

Polyphen

0.62

P;.

Vest4

0.080

MutPred

0.17

Loss of solvent accessibility (P = 0.0387);.;

MVP

0.043

MPC

0.31

ClinPred

0.78

GERP RS

0.59

Varity_R

0.097

gMVP

0.010

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