chr14-30875191-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP6BS1BS2

The NM_001347720.2(COCH):c.170C>T(p.Ala57Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000706 in 1,518,400 control chromosomes in the GnomAD database, including 9 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

Frequency

Genomes: 𝑓 0.0010 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00067 ( 8 hom. )

Consequence

COCH
NM_001347720.2 missense

Scores

Clinical Significance

Benign no assertion criteria provided B:1

Conservation

PhyloP100: 0.215

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

nonsyndromic genetic hearing loss
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal dominant nonsyndromic hearing loss 9
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
hearing loss, autosomal recessive 110
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

COCH links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP6

Variant 14-30875191-C-T is Benign according to our data. Variant chr14-30875191-C-T is described in ClinVar as Benign. ClinVar VariationId is 3055531.Status of the report is no_assertion_criteria_provided, 0 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00102 (156/152288) while in subpopulation EAS AF = 0.0291 (150/5156). AF 95% confidence interval is 0.0253. There are 1 homozygotes in GnomAd4. There are 88 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 8 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001347720.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
COCH	NM_004086.3	MANE Select	c.82+88C>T		intron	N/A	NP_004077.1	O43405-1
COCH	NM_001347720.2		c.170C>T	p.Ala57Val	missense	Exon 2 of 11	NP_001334649.1	A0A2U3TZE7
COCH	NM_001135058.2		c.82+88C>T		intron	N/A	NP_001128530.1	O43405-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
COCH	ENST00000216361.9	TSL:1	c.170C>T	p.Ala57Val	missense	Exon 2 of 11	ENSP00000216361.5	A0A2U3TZE7
COCH	ENST00000396618.9	TSL:1 MANE Select	c.82+88C>T		intron	N/A	ENSP00000379862.3	O43405-1
COCH	ENST00000475087.5	TSL:1	c.82+88C>T		intron	N/A	ENSP00000451528.1	O43405-2

Frequencies

GnomAD3 genomes

AF:

0.00103

AC:

156

AN:

152170

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:

0.0290

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000671

AC:

916

AN:

1366112

Hom.:

Cov.:

AF XY:

0.000730

AC XY:

492

AN XY:

673736

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31030

American (AMR)

AF:

0.0000285

AC:

AN:

35030

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24528

East Asian (EAS)

AF:

0.0221

AC:

786

AN:

35522

South Asian (SAS)

AF:

0.000833

AC:

AN:

78042

European-Finnish (FIN)

AF:

0.00

AC:

AN:

38648

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4014

European-Non Finnish (NFE)

AF:

0.0000113

AC:

AN:

1062418

Other (OTH)

AF:

0.000914

AC:

AN:

56880

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

120

180

240

300

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00102

AC:

156

AN:

152288

Hom.:

Cov.:

AF XY:

0.00118

AC XY:

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41576

American (AMR)

AF:

0.00

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.0291

AC:

150

AN:

5156

South Asian (SAS)

AF:

0.00104

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68012

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000371

Hom.:

Bravo

AF:

0.00133

Asia WGS

AF:

0.00895

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:no assertion criteria provided

View on ClinVar

Pathogenic

VUS

Benign

Condition

COCH-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_noAF

Benign

-0.70

CADD

Benign

7.1

(source)

DANN

Benign

0.77

FATHMM_MKL

Benign

0.052

LIST_S2

Benign

0.26

MetaRNN

Benign

0.0039

PhyloP100

0.21

GERP RS

-0.34

PromoterAI

0.0064

Neutral

(source)

gMVP

0.11

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.27

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.27

Position offset: 6

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over