rs28362778

Positions:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004086.3(COCH):c.1204A>G(p.Ile402Val) variant causes a missense change. The variant allele was found at a frequency of 0.000304 in 1,614,230 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0015 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

COCH
NM_004086.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 5.22

Variant links:

Genes affected

COCH (HGNC:2180): (cochlin) The protein encoded by this gene is highly conserved in human, mouse, and chicken, showing 94% and 79% amino acid identity of human to mouse and chicken sequences, respectively. Hybridization to this gene was detected in spindle-shaped cells located along nerve fibers between the auditory ganglion and sensory epithelium. These cells accompany neurites at the habenula perforata, the opening through which neurites extend to innervate hair cells. This and the pattern of expression of this gene in chicken inner ear paralleled the histologic findings of acidophilic deposits, consistent with mucopolysaccharide ground substance, in temporal bones from DFNA9 (autosomal dominant nonsyndromic sensorineural deafness 9) patients. Mutations that cause DFNA9 have been reported in this gene. Alternative splicing results in multiple transcript variants encoding the same protein. Additional splice variants encoding distinct isoforms have been described but their biological validities have not been demonstrated. [provided by RefSeq, Oct 2008]

COCH links:

ENSG00000258525 (HGNC:):

ENSG00000258525 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.00884366).

BP6

Variant 14-30886039-A-G is Benign according to our data. Variant chr14-30886039-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 313004.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00152 (232/152340) while in subpopulation AFR AF= 0.00544 (226/41570). AF 95% confidence interval is 0.00486. There are 2 homozygotes in gnomad4. There are 126 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COCH	NM_004086.3 linkuse as main transcript	c.1204A>G	p.Ile402Val	missense_variant	11/12	ENST00000396618.9	NP_004077.1	O43405-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COCH	ENST00000396618.9 linkuse as main transcript	c.1204A>G	p.Ile402Val	missense_variant	11/12	1	NM_004086.3	ENSP00000379862.3		O43405-1

Frequencies

GnomAD3 genomes

AF:

0.00150

AC:

229

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00538

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000493

AC:

124

AN:

251444

Hom.:

AF XY:

0.000324

AC XY:

AN XY:

135888

show subpopulations

Gnomad AFR exome

AF:

0.00683

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000176

AC:

258

AN:

1461890

Hom.:

Cov.:

AF XY:

0.000143

AC XY:

104

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.00639

Gnomad4 AMR exome

AF:

0.000246

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.000381

GnomAD4 genome

AF:

0.00152

AC:

232

AN:

152340

Hom.:

Cov.:

AF XY:

0.00169

AC XY:

126

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.00544

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000176

Hom.:

Bravo

AF:

0.00162

ESP6500AA

AF:

0.00635

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000527

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Benign, criteria provided, single submitter	clinical testing	GeneDx	May 18, 2020	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	May 26, 2017	The p.Ile402Val variant (rs28362778) has not been reported in association with hearing loss in medical literature or in gene specific variation databases but has been reported to ClinVar (Variation ID: 313004). This variant is listed in the Exome Aggregation Consortium Browser with an African population frequency of 0.6 percent (identified on 62 out of 10,406 chromosomes including 1 homozygote). Based on these observations, the p.Ile402Val variant is likely to be benign. -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

May 07, 2012

Ile402Val in Exon 11 of COCH: This variant is not expected to have clinical sign ificance because it has been identified in 0.6% (21/3738) of African American ch romosomes from a broad population by the NHLBI Exome Sequencing Project (http:// evs.gs.washington.edu/EVS; dbSNP rs28362778). -

COCH-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 24, 2020

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Autosomal dominant nonsyndromic hearing loss 9

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.051

.;T;T;.;.;T;T

Eigen

Benign

-0.080

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.83

T;.;.;D;D;T;T

M_CAP

Benign

0.017

MetaRNN

Benign

0.0088

T;T;T;T;T;T;T

MetaSVM

Benign

-0.66

MutationAssessor

Benign

0.090

.;N;N;.;N;.;N

PrimateAI

Benign

0.44

PROVEAN

Benign

0.42

.;N;.;.;N;N;.

REVEL

Uncertain

0.33

Sift

Benign

0.31

.;T;.;.;T;T;.

Sift4G

Benign

0.76

.;T;.;.;T;T;.

Polyphen

0.061

.;B;B;.;.;.;B

Vest4

0.15, 0.15, 0.11

MVP

0.64

MPC

0.18

ClinPred

0.026

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.10

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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