Genetic Variant SHROOM4:p.Asn1360Ser (chrX-50598399-T-C) – 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_020717.5(SHROOM4):c.4079A>G(p.Asn1360Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000389 in 1,208,421 control chromosomes in the GnomAD database, including 2 homozygotes. There are 13 hemizygotes in GnomAD. 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 0.000072 ( 0 hom., 2 hem., cov: 22)

Exomes 𝑓: 0.000036 ( 2 hom. 11 hem. )

Consequence

SHROOM4
NM_020717.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.45

Variant links:

Genes affected

SHROOM4 (HGNC:29215): (shroom family member 4) This gene encodes a member of the APX/Shroom family, which contain an N-terminal PDZ domain and a C-terminal ASD2 motif. The encoded protein may play a role in cytoskeletal architecture. Mutations in this gene have been linked to the X-linked Stocco dos Santos syndrome characterized by cognitive disabilities. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2017]

SHROOM4 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=0.26332784).

BS2

High Hemizygotes in GnomAd4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SHROOM4	NM_020717.5 link	c.4079A>G	p.Asn1360Ser	missense_variant	Exon 8 of 9	ENST00000376020.9	NP_065768.2	Q9ULL8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SHROOM4	ENST00000376020.9 link	c.4079A>G	p.Asn1360Ser	missense_variant	Exon 8 of 9	2	NM_020717.5	ENSP00000365188.2	Q9ULL8-1
SHROOM4	ENST00000289292.11 link	c.4079A>G	p.Asn1360Ser	missense_variant	Exon 8 of 10	1		ENSP00000289292.7	Q9ULL8-1
SHROOM4	ENST00000460112.3 link	c.3731A>G	p.Asn1244Ser	missense_variant	Exon 7 of 8	5		ENSP00000421450.1	Q9ULL8-2

Frequencies

GnomAD3 genomes

AF:

0.0000718

AC:

AN:

111399

Hom.:

Cov.:

AF XY:

0.0000595

AC XY:

AN XY:

33589

show subpopulations

Gnomad AFR

AF:

0.000196

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000191

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:

0.0000669

AC:

AN:

179414

Hom.:

AF XY:

0.0000468

AC XY:

AN XY:

64092

show subpopulations

Gnomad AFR exome

AF:

0.000543

Gnomad AMR exome

AF:

0.0000737

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:

0.0000376

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000356

AC:

AN:

1097022

Hom.:

Cov.:

AF XY:

0.0000304

AC XY:

AN XY:

362430

show subpopulations

Gnomad4 AFR exome

AF:

0.000758

Gnomad4 AMR exome

AF:

0.0000570

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000663

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000143

Gnomad4 OTH exome

AF:

0.0000651

GnomAD4 genome

AF:

0.0000718

AC:

AN:

111399

Hom.:

Cov.:

AF XY:

0.0000595

AC XY:

AN XY:

33589

show subpopulations

Gnomad4 AFR

AF:

0.000196

Gnomad4 AMR

AF:

0.000191

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

Alfa

AF:

0.000174

Hom.:

Bravo

AF:

0.000106

ESP6500AA

AF:

0.000782

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.4079A>G (p.N1360S) alteration is located in exon 8 (coding exon 8) of the SHROOM4 gene. This alteration results from a A to G substitution at nucleotide position 4079, causing the asparagine (N) at amino acid position 1360 to be replaced by a serine (S). 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

0.090

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.64

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.024

T;T;.

FATHMM_MKL

Uncertain

0.97

LIST_S2

Benign

0.78

T;.;T

M_CAP

Benign

0.038

MetaRNN

Benign

0.26

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L;.

PrimateAI

Benign

0.41

PROVEAN

Uncertain

-4.3

D;D;D

REVEL

Benign

0.13

Sift

Benign

0.049

D;D;D

Sift4G

Uncertain

0.039

D;D;D

Polyphen

0.71

P;P;.

Vest4

0.36

MVP

0.37

MPC

0.47

ClinPred

0.22

GERP RS

5.3

Varity_R

0.40

gMVP

0.23

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