chrX-100665252-C-G

Variant names:

• chrX-100665252-C-G
• rs769478434
• NM_014467.3:c.542C>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PP3_Strong BS2

The NM_014467.3(SRPX2):​c.542C>G​(p.Pro181Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000219 in 1,096,187 control chromosomes in the GnomAD database, including 1 homozygotes. There are 14 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 24)
  • Exomes 𝑓: 0.000022 (1 hom. 14 hem.)
• Consequence: SRPX2 NM_014467.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.18

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.941
• BS2: High Hemizygotes in GnomAdExome4 at 14 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SRPX2	NM_014467.3	c.542C>G	p.Pro181Arg	missense_variant	Exon 6 of 11	ENST00000373004.5	NP_055282.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SRPX2	ENST00000373004.5	c.542C>G	p.Pro181Arg	missense_variant	Exon 6 of 11	1	NM_014467.3	ENSP00000362095.3

Frequencies

GnomAD3 genomes Cov.: 24

GnomAD3 exomes AF: 0.0000397 AC: 7 AN: 176451 Hom.: 1 AF XY: 0.0000650 AC XY: 4 AN XY: 61571

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 SAS exome AF: 0.000395

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000219 AC: 24 AN: 1096187 Hom.: 1 Cov.: 32 AF XY: 0.0000387 AC XY: 14 AN XY: 361699

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000430

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000217

GnomAD4 genome Cov.: 24

ExAC AF: 0.0000824 AC: 10

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 19, 2015

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.70
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Pathogenic	0.27
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.13	T;.;.
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.94	D;D;D
MetaSVM	Uncertain	-0.21	T
MutationAssessor	Pathogenic	3.1	M;.;.
PrimateAI	Uncertain	0.61	T
PROVEAN	Pathogenic	-6.8	D;.;.
REVEL	Uncertain	0.57
Sift	Uncertain	0.0010	D;.;.
Sift4G	Pathogenic	0.0	D;.;.
Polyphen		1.0	D;.;.
Vest4		0.31
MutPred		0.87		Loss of catalytic residue at P181 (P = 0.0091);Loss of catalytic residue at P181 (P = 0.0091);.;
MVP		0.79
MPC		0.69
ClinPred		0.89	D
GERP RS		5.5
Varity_R		0.90
gMVP		0.86

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

Other links and lift over

dbSNP: rs769478434; hg19: chrX-99920249;