Variant chr14-30878842-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2

The NM_004086.3(COCH):c.271C>G(p.Arg91Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,280 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Consequence

COCH
NM_004086.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.941

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a domain LCCL (size 93) in uniprot entity COCH_HUMAN there are 22 pathogenic changes around while only 3 benign (88%) in NM_004086.3

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COCH	NM_004086.3 linkuse as main transcript	c.271C>G	p.Arg91Gly	missense_variant	5/12	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.271C>G	p.Arg91Gly	missense_variant	5/12	1	NM_004086.3	ENSP00000379862.3		O43405-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152280

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000579

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Sep 01, 2023

COCH: PM1, PM5 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Pathogenic

0.36

BayesDel_noAF

Pathogenic

0.28

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.63

.;D;D;.;.;.;D

Eigen

Benign

-0.13

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.37

LIST_S2

Uncertain

0.86

D;.;.;D;D;D;D

M_CAP

Benign

0.077

MetaRNN

Uncertain

0.45

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

MetaSVM

Uncertain

0.098

MutationAssessor

Benign

1.9

.;L;L;.;L;.;L

PrimateAI

Uncertain

0.48

PROVEAN

Benign

-1.5

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

REVEL

Uncertain

0.57

Sift

Benign

0.12

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

Sift4G

Benign

0.23

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

Polyphen

1.0

.;D;D;.;.;.;D

Vest4

0.51

MutPred

0.56

.;Gain of catalytic residue at V92 (P = 0.0312);Gain of catalytic residue at V92 (P = 0.0312);Gain of catalytic residue at V92 (P = 0.0312);Gain of catalytic residue at V92 (P = 0.0312);.;Gain of catalytic residue at V92 (P = 0.0312);

MVP

0.89

MPC

0.48

ClinPred

0.84

GERP RS

2.5

Varity_R

0.42

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

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