Genetic Variant WHRN:p.Ser774Arg (chr9-114403992-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_015404.4(WHRN):c.2322C>A(p.Ser774Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. S774S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

WHRN
NM_015404.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.546

Publications

0 publications found

Variant links:

Genes affected

WHRN (HGNC:16361): (whirlin) This gene is thought to function in the organization and stabilization of sterocilia elongation and actin cystoskeletal assembly, based on studies of the related mouse gene. Mutations in this gene have been associated with autosomal recessive non-syndromic deafness and Usher Syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

WHRN Gene-Disease associations (from GenCC):

Usher syndrome type 2D
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics, G2P
autosomal recessive nonsyndromic hearing loss 31
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
nonsyndromic genetic hearing loss
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Usher syndrome type 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

WHRN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12409225).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WHRN	NM_015404.4 link	c.2322C>A	p.Ser774Arg	missense_variant	Exon 10 of 12	ENST00000362057.4	NP_056219.3	Q9P202-1B9EGE6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WHRN	ENST00000362057.4 link	c.2322C>A	p.Ser774Arg	missense_variant	Exon 10 of 12	1	NM_015404.4	ENSP00000354623.3		Q9P202-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460270

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726498

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.0000193

AC:

AN:

51822

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111996

Other (OTH)

AF:

0.00

AC:

AN:

60388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.070

BayesDel_noAF

Benign

-0.34

CADD

Benign

1.8

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

.;.;T

Eigen

Benign

-0.54

Eigen_PC

Benign

-0.71

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.83

T;T;T

M_CAP

Benign

0.0072

MetaRNN

Benign

0.12

T;T;T

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.3

.;.;M

PhyloP100

-0.55

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.3

N;N;N

REVEL

Benign

0.20

Sift

Uncertain

0.0010

D;D;D

Sift4G

Benign

0.11

T;T;D

Polyphen

1.0, 0.99

.;D;D

Vest4

0.18

MutPred

0.29

.;.;Loss of phosphorylation at S774 (P = 0.0151);

MVP

0.15

MPC

0.14

ClinPred

0.95

GERP RS

-0.12

Varity_R

0.11

gMVP

0.47

Mutation Taster

=88/12

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over