Variant X-9894440-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS2_Supporting

The NM_001649.4(SHROOM2):c.532G>A(p.Val178Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,208,009 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000091 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000016 ( 0 hom. 6 hem. )

Consequence

SHROOM2
NM_001649.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.89

Variant links:

Genes affected

SHROOM2 (HGNC:630): (shroom family member 2) This gene represents the human homolog of Xenopus laevis apical protein (APX) gene, which is implicated in amiloride-sensitive sodium channel activity. It is expressed in endothelial cells and facilitates the formation of a contractile network within endothelial cells. Depletion of this gene results in an increase in endothelial sprouting, migration, and angiogenesis. This gene is highly expressed in the retina, and is a strong candidate for ocular albinism type 1 syndrome. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2016]

SHROOM2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06176412).

BS2

High Hemizygotes in GnomAdExome4 at 6 geneVariant has number of hemizygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SHROOM2	NM_001649.4 linkuse as main transcript	c.532G>A	p.Val178Ile	missense_variant	4/10	ENST00000380913.8	NP_001640.1	Q13796
SHROOM2	XM_005274500.5 linkuse as main transcript	c.532G>A	p.Val178Ile	missense_variant	4/10		XP_005274557.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SHROOM2	ENST00000380913.8 linkuse as main transcript	c.532G>A	p.Val178Ile	missense_variant	4/10	1	NM_001649.4	ENSP00000370299.3		Q13796

Frequencies

GnomAD3 genomes

AF:

0.00000909

AC:

AN:

109975

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

32355

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:

0.0000190

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000328

AC:

AN:

183067

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

67545

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000525

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000123

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1098034

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

363394

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000170

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000369

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000107

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.00000909

AC:

AN:

109975

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

32355

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000190

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000576

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 08, 2024

The c.532G>A (p.V178I) alteration is located in exon 4 (coding exon 4) of the SHROOM2 gene. This alteration results from a G to A substitution at nucleotide position 532, causing the valine (V) at amino acid position 178 to be replaced by an isoleucine (I). 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

0.12

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.65

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.074

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.82

M_CAP

Benign

0.031

MetaRNN

Benign

0.062

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.15

REVEL

Benign

0.17

Sift

Benign

0.20

Sift4G

Benign

0.098

Polyphen

0.60

Vest4

0.037

MutPred

0.078

Gain of glycosylation at S177 (P = 0.2306);

MVP

0.39

MPC

0.29

ClinPred

0.074

GERP RS

0.73

Varity_R

0.040

gMVP

0.20

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