Genetic Variant SRPX:p.Glu246Gln (chrX-38160972-C-G) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_006307.5(SRPX):c.736G>C(p.Glu246Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000157 in 1,208,012 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000063 ( 0 hom., 2 hem., cov: 22)

Exomes 𝑓: 0.000011 ( 0 hom. 1 hem. )

Consequence

SRPX
NM_006307.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.36

Variant links:

Genes affected

SRPX (HGNC:11309): (sushi repeat containing protein X-linked) Predicted to be an extracellular matrix structural constituent. Predicted to be involved in cell adhesion. Predicted to act upstream of or within several processes, including negative regulation of cell proliferation involved in contact inhibition; phagolysosome assembly; and positive regulation of extrinsic apoptotic signaling pathway in absence of ligand. Part of collagen-containing extracellular matrix. [provided by Alliance of Genome Resources, Apr 2022]

SRPX links:

ENSG00000250349 (HGNC:):

ENSG00000250349 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.26070487).

BS2

High Hemizygotes in GnomAd4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRPX	NM_006307.5 link	c.736G>C	p.Glu246Gln	missense_variant	Exon 6 of 10	ENST00000378533.4	NP_006298.1	P78539-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SRPX	ENST00000378533.4 link	c.736G>C	p.Glu246Gln	missense_variant	Exon 6 of 10	1	NM_006307.5	ENSP00000367794.3		P78539-1
ENSG00000250349	ENST00000465127.1 link	c.172-505149C>G		intron_variant	Intron 3 of 8	5		ENSP00000417050.1		B4E171

Frequencies

GnomAD3 genomes

AF:

0.0000628

AC:

AN:

111488

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33680

show subpopulations

Gnomad AFR

AF:

0.000229

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:

0.0000328

AC:

AN:

183019

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67483

show subpopulations

Gnomad AFR exome

AF:

0.000304

Gnomad AMR exome

AF:

0.0000731

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:

0.0000109

AC:

AN:

1096524

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

361972

show subpopulations

Gnomad4 AFR exome

AF:

0.000265

Gnomad4 AMR exome

AF:

0.000114

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:

0.0000628

AC:

AN:

111488

Hom.:

Cov.:

AF XY:

0.0000594

AC XY:

AN XY:

33680

show subpopulations

Gnomad4 AFR

AF:

0.000229

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:

0.0000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 12, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.736G>C (p.E246Q) alteration is located in exon 6 (coding exon 6) of the SRPX gene. This alteration results from a G to C substitution at nucleotide position 736, causing the glutamic acid (E) at amino acid position 246 to be replaced by a glutamine (Q). 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

0.11

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.026

.;.;.;T

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.95

D;D;D;D

M_CAP

Uncertain

0.22

MetaRNN

Benign

0.26

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

.;.;L;L

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.29

N;N;N;N

REVEL

Benign

0.14

Sift

Benign

0.18

T;T;T;T

Sift4G

Benign

0.50

T;T;T;T

Polyphen

0.98

.;.;.;D

Vest4

0.29

MVP

0.58

MPC

0.14

ClinPred

0.071

GERP RS

5.0

Varity_R

0.37

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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