chrX-100662186-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_014467.3(SRPX2):c.174G>C(p.Trp58Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000414 in 1,209,072 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000036 ( 0 hom. 0 hem. )

Consequence

SRPX2
NM_014467.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 9.28

Publications

0 publications found

Variant links:

Genes affected

SRPX2 (HGNC:30668): (sushi repeat containing protein X-linked 2) This gene encodes a secreted protein that contains three sushi repeat motifs. The encoded protein may play a role in the development of speech and language centers in the brain. This protein may also be involved in angiogenesis. Mutations in this gene are the cause of bilateral perisylvian polymicrogyria, rolandic epilepsy, speech dyspraxia and cognitive disability. [provided by RefSeq, May 2010]

SRPX2 Gene-Disease associations (from GenCC):

rolandic epilepsy-speech dyspraxia syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
polymicrogyria, bilateral perisylvian, X-linked
Inheritance: XL Classification: LIMITED Submitted by: G2P
rolandic epilepsy, intellectual disability, and speech dyspraxia, X-linked
Inheritance: XL Classification: LIMITED, NO_KNOWN Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

SRPX2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.798

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRPX2	NM_014467.3 link	c.174G>C	p.Trp58Cys	missense_variant	Exon 4 of 11	ENST00000373004.5	NP_055282.1	O60687

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SRPX2	ENST00000373004.5 link	c.174G>C	p.Trp58Cys	missense_variant	Exon 4 of 11	1	NM_014467.3	ENSP00000362095.3		O60687

Frequencies

GnomAD3 genomes

AF:

0.00000899

AC:

AN:

111263

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000546

AC:

AN:

183161

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000122

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000364

AC:

AN:

1097809

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

363171

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26394

American (AMR)

AF:

0.00

AC:

AN:

35206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19384

East Asian (EAS)

AF:

0.00

AC:

AN:

30200

South Asian (SAS)

AF:

0.00

AC:

AN:

54143

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40478

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4130

European-Non Finnish (NFE)

AF:

0.00000475

AC:

AN:

841787

Other (OTH)

AF:

0.00

AC:

AN:

46087

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000899

AC:

AN:

111263

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33475

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30543

American (AMR)

AF:

0.00

AC:

AN:

10472

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2642

East Asian (EAS)

AF:

0.00

AC:

AN:

3573

South Asian (SAS)

AF:

0.00

AC:

AN:

2621

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5914

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.0000188

AC:

AN:

53078

Other (OTH)

AF:

0.00

AC:

AN:

1499

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Rolandic epilepsy, intellectual disability, and speech dyspraxia, X-linked

Uncertain:2

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 24, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces tryptophan with cysteine at codon 58 of the SRPX2 protein (p.Trp58Cys). The tryptophan residue is highly conserved and there is a large physicochemical difference between tryptophan and cysteine. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with an SRPX2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies. In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. -

not provided

Uncertain:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.20

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

T;.;.

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.80

D;D;D

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.2

M;.;.

PhyloP100

9.3

PrimateAI

Pathogenic

0.86

PROVEAN

Pathogenic

-4.9

D;.;.

REVEL

Uncertain

0.54

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;.;.

Polyphen

1.0

D;.;.

Vest4

0.85

MutPred

0.63

Loss of catalytic residue at C59 (P = 0.0803);Loss of catalytic residue at C59 (P = 0.0803);.;

MVP

0.77

MPC

0.85

ClinPred

0.97

GERP RS

5.1

Varity_R

0.93

gMVP

0.93

Mutation Taster

=12/88

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over