16-79211747-C-T

Position:

chr16-79211747-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_016373.4(WWOX):c.1196C>T(p.Ala399Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00013 in 1,614,178 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A399A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

WWOX
NM_016373.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 1.47

Variant links:

Genes affected

WWOX (HGNC:12799): (WW domain containing oxidoreductase) This gene encodes a member of the short-chain dehydrogenases/reductases (SDR) protein family. This gene spans the FRA16D common chromosomal fragile site and appears to function as a tumor suppressor gene. Expression of the encoded protein is able to induce apoptosis, while defects in this gene are associated with multiple types of cancer. Disruption of this gene is also associated with autosomal recessive spinocerebellar ataxia 12. Disruption of a similar gene in mouse results in impaired steroidogenesis, additionally suggesting a metabolic function for the protein. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

WWOX links:

MAF (HGNC:):

MAF links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.027652591).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000322 (49/152294) while in subpopulation AFR AF= 0.000722 (30/41580). AF 95% confidence interval is 0.000518. There are 0 homozygotes in gnomad4. There are 22 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WWOX	NM_016373.4 linkuse as main transcript	c.1196C>T	p.Ala399Val	missense_variant	9/9	ENST00000566780.6	NP_057457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WWOX	ENST00000566780.6 linkuse as main transcript	c.1196C>T	p.Ala399Val	missense_variant	9/9	1	NM_016373.4	ENSP00000457230	P1	Q9NZC7-1

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000721

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000282

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000204

AC:

AN:

249462

Hom.:

AF XY:

0.000222

AC XY:

AN XY:

135384

show subpopulations

Gnomad AFR exome

AF:

0.00110

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000556

Gnomad SAS exome

AF:

0.000327

Gnomad FIN exome

AF:

0.000371

Gnomad NFE exome

AF:

0.0000618

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.000110

AC:

161

AN:

1461884

Hom.:

Cov.:

AF XY:

0.000118

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000806

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.000301

Gnomad4 FIN exome

AF:

0.000150

Gnomad4 NFE exome

AF:

0.0000629

Gnomad4 OTH exome

AF:

0.000248

GnomAD4 genome

AF:

0.000322

AC:

AN:

152294

Hom.:

Cov.:

AF XY:

0.000295

AC XY:

AN XY:

74466

show subpopulations

Gnomad4 AFR

AF:

0.000722

Gnomad4 AMR

AF:

0.000720

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000282

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.0000678

Hom.:

Bravo

AF:

0.000400

ESP6500AA

AF:

0.00100

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000231

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jul 12, 2022	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign in association with neurodevelopmental disorders to our knowledge; This variant is associated with the following publications: (PMID: 24932569) -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jan 26, 2018	- -

Autosomal recessive spinocerebellar ataxia 12;C3463992:Developmental and epileptic encephalopathy, 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 17, 2022

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 399 of the WWOX protein (p.Ala399Val). This variant is present in population databases (rs200815431, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with WWOX-related conditions. ClinVar contains an entry for this variant (Variation ID: 586943). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt WWOX protein function. 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. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 01, 2021

The c.1196C>T (p.A399V) alteration is located in exon 9 (coding exon 9) of the WWOX gene. This alteration results from a C to T substitution at nucleotide position 1196, causing the alanine (A) at amino acid position 399 to be replaced by a valine (V). 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

0.099

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.43

CADD

Benign

8.4

DANN

Benign

0.94

DEOGEN2

Benign

0.13

T;.

Eigen

Benign

-0.69

Eigen_PC

Benign

-0.84

FATHMM_MKL

Benign

0.53

LIST_S2

Benign

0.65

T;T

M_CAP

Benign

0.026

MetaRNN

Benign

0.028

T;T

MetaSVM

Benign

-0.85

MutationTaster

Benign

1.0

D;N;N;N

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.78

N;N

REVEL

Benign

0.12

Sift

Benign

0.17

T;D

Sift4G

Benign

0.13

T;T

Polyphen

0.093

B;B

Vest4

0.12

MVP

0.83

ClinPred

0.011

GERP RS

-5.9

Varity_R

0.035

gMVP

0.40

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