rs201555289

Variant summary

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

The NM_015404.4(WHRN):c.2354C>T(p.Thr785Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000209 in 1,611,612 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T785T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00021 ( 1 hom. )

Consequence

WHRN
NM_015404.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 1.08

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 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=0.05802259).

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.00021 (306/1459294) while in subpopulation SAS AF= 0.000788 (68/86256). AF 95% confidence interval is 0.000638. There are 1 homozygotes in gnomad4_exome. There are 170 alleles in male gnomad4_exome subpopulation. Median coverage is 57. 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	UniProt
WHRN	NM_015404.4 linkuse as main transcript	c.2354C>T	p.Thr785Ile	missense_variant	10/12	ENST00000362057.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
WHRN	ENST00000362057.4 linkuse as main transcript	c.2354C>T	p.Thr785Ile	missense_variant	10/12	1	NM_015404.4	P1	Q9P202-1

Frequencies

GnomAD3 genomes

AF:

0.000204

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.000577

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000623

Gnomad FIN

AF:

0.000471

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000300

AC:

AN:

249902

Hom.:

AF XY:

0.000385

AC XY:

AN XY:

135158

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.000397

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000849

Gnomad FIN exome

AF:

0.000596

Gnomad NFE exome

AF:

0.000202

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000210

AC:

306

AN:

1459294

Hom.:

Cov.:

AF XY:

0.000234

AC XY:

170

AN XY:

725982

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.000536

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000788

Gnomad4 FIN exome

AF:

0.000393

Gnomad4 NFE exome

AF:

0.000156

Gnomad4 OTH exome

AF:

0.000364

GnomAD4 genome

AF:

0.000204

AC:

AN:

152318

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.000577

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000623

Gnomad4 FIN

AF:

0.000471

Gnomad4 NFE

AF:

0.000235

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000312

Hom.:

Bravo

AF:

0.000144

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000214

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000415

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 13, 2021	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 24, 2022	This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 785 of the WHRN protein (p.Thr785Ile). This variant is present in population databases (rs201555289, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with WHRN-related conditions. ClinVar contains an entry for this variant (Variation ID: 45673). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Dec 20, 2012

Variant classified as Uncertain Significance - Favor Benign. The Thr785Ile varia nt in DFNB31 has not been reported in the literature nor previously identified b y our laboratory. Computational analyses (biochemical amino acid properties, con servation, AlignGVGD, PolyPhen2, and SIFT) suggest that the Thr785Ile variant ma y not impact the protein. In addition, this variant has been identified in 0.03% (3/8600) of European American chromosomes and 0.02% (1/4406) of African America n chromosomes in a broad population by the NHLBI Exome sequencing project (http: //evs.gs.washington.edu/EVS/; dbSNP rs201555289). In summary, computational ana lyses predictions, lack of conservation at this position, and the presence of th is variant in the general population support a more likely benign role, however additional data is needed to determine its clinical significance with certainty. -

Autosomal recessive nonsyndromic hearing loss 31

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Usher syndrome type 2D

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.56

Cadd

Benign

Dann

Uncertain

1.0

Eigen

Benign

-0.0065

Eigen_PC

Benign

0.090

FATHMM_MKL

Benign

0.71

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.058

T;T;T

MetaSVM

Benign

-1.1

MutationTaster

Benign

0.99

N;N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.3

N;N;N

REVEL

Benign

0.039

Sift

Benign

0.057

T;D;D

Sift4G

Benign

0.20

T;T;T

Polyphen

0.38, 0.28

.;B;B

Vest4

0.17

MVP

0.27

MPC

0.14

ClinPred

0.030

GERP RS

4.1

Varity_R

0.049

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