14-30875167-G-A

Position:

chr14-30875167-G-A

Variant summary

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

The ENST00000216361.9(COCH):c.146G>A(p.Arg49Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000805 in 1,538,750 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. 7/9 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0039 ( 3 hom., cov: 33)

Exomes 𝑓: 0.00047 ( 6 hom. )

Consequence

COCH
ENST00000216361.9 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.890

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:

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=0.0050435364).

BP6

Variant 14-30875167-G-A is Benign according to our data. Variant chr14-30875167-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1217827.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 = 0.00386 (588/152298) while in subpopulation AFR AF= 0.0131 (544/41576). AF 95% confidence interval is 0.0122. There are 3 homozygotes in gnomad4. There are 252 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COCH	NM_004086.3 linkuse as main transcript	c.82+64G>A		intron_variant		ENST00000396618.9	NP_004077.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COCH	ENST00000396618.9 linkuse as main transcript	c.82+64G>A		intron_variant		1	NM_004086.3	ENSP00000379862	P1	O43405-1

Frequencies

GnomAD3 genomes

AF:

0.00384

AC:

585

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0131

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00144

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00383

GnomAD4 exome

AF:

0.000470

AC:

651

AN:

1386452

Hom.:

Cov.:

AF XY:

0.000424

AC XY:

290

AN XY:

684156

show subpopulations

Gnomad4 AFR exome

AF:

0.0138

Gnomad4 AMR exome

AF:

0.00109

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000759

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000108

Gnomad4 OTH exome

AF:

0.000885

GnomAD4 genome

AF:

0.00386

AC:

588

AN:

152298

Hom.:

Cov.:

AF XY:

0.00338

AC XY:

252

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.0131

Gnomad4 AMR

AF:

0.00144

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00379

Alfa

AF:

0.00298

Hom.:

Bravo

AF:

0.00478

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 07, 2018	- -

COCH-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 01, 2024

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

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.71

CADD

Benign

DANN

Benign

0.85

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.31

MetaRNN

Benign

0.0050

MutationTaster

Benign

1.0

N;N;N;N

GERP RS

0.14

gMVP

0.13

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