dbSNP rs1237471672: SRPX2:p.Ser102Leu (chrX-100662317-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_014467.3(SRPX2):c.305C>T(p.Ser102Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,210,083 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000027 ( 0 hom. 0 hem. )

Consequence

SRPX2
NM_014467.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 7.26

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRPX2	NM_014467.3 link	c.305C>T	p.Ser102Leu	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.305C>T	p.Ser102Leu	missense_variant	Exon 4 of 11	1	NM_014467.3	ENSP00000362095.3		O60687

Frequencies

GnomAD3 genomes

AF:

0.0000268

AC:

AN:

112023

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34193

show subpopulations

Gnomad AFR

AF:

0.0000974

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

GnomAD3 exomes

AF:

0.00000546

AC:

AN:

183258

Hom.:

AF XY:

0.00

AC XY:

AN XY:

67744

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000365

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000273

AC:

AN:

1098060

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

363460

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000568

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.0000268

AC:

AN:

112023

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34193

show subpopulations

Gnomad4 AFR

AF:

0.0000974

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

Bravo

AF:

0.0000529

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

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

Uncertain:3

Sep 28, 2022

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 20, 2020

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine with leucine at codon 102 of the SRPX2 protein (p.Ser102Leu). The serine residue is highly conserved and there is a large physicochemical difference between serine and leucine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with SRPX2-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C15"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Apr 14, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Uncertain:1

Mar 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.305C>T (p.S102L) alteration is located in exon 4 (coding exon 3) of the SRPX2 gene. This alteration results from a C to T substitution at nucleotide position 305, causing the serine (S) at amino acid position 102 to be replaced by a leucine (L). 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

0.20

BayesDel_addAF

Benign

-0.072

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.064

T;.;.

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.47

T;T;T

MetaSVM

Benign

-0.56

MutationAssessor

Benign

2.0

M;.;.

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-1.6

N;.;.

REVEL

Benign

0.18

Sift

Benign

0.26

T;.;.

Sift4G

Benign

0.31

T;.;.

Polyphen

0.97

D;.;.

Vest4

0.53

MutPred

0.56

Loss of phosphorylation at S102 (P = 0.0298);Loss of phosphorylation at S102 (P = 0.0298);.;

MVP

0.39

MPC

0.28

ClinPred

0.83

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.35

gMVP

0.66

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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