NM_022124.6:c.1301A>G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_022124.6(CDH23):c.1301A>G(p.Asn434Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000129 in 1,613,652 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00072 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000068 ( 0 hom. )

Consequence

CDH23
NM_022124.6 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 9.29

Publications

3 publications found

Variant links:

Genes affected

CDH23 (HGNC:13733): (cadherin related 23) This gene is a member of the cadherin superfamily, whose genes encode calcium dependent cell-cell adhesion glycoproteins. The encoded protein is thought to be involved in stereocilia organization and hair bundle formation. The gene is located in a region containing the human deafness loci DFNB12 and USH1D. Usher syndrome 1D and nonsyndromic autosomal recessive deafness DFNB12 are caused by allelic mutations of this cadherin-like gene. Upregulation of this gene may also be associated with breast cancer. Alternative splice variants encoding different isoforms have been described. [provided by RefSeq, May 2013]

CDH23 Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 12
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
nonsyndromic genetic hearing loss
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Usher syndrome type 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Usher syndrome type 1D
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CDH23 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.018336326).

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000716 (109/152186) while in subpopulation AFR AF = 0.00246 (102/41526). AF 95% confidence interval is 0.00207. There are 1 homozygotes in GnomAd4. There are 47 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDH23	NM_022124.6 link	c.1301A>G	p.Asn434Ser	missense_variant	Exon 14 of 70	ENST00000224721.12	NP_071407.4	Q9H251-1Q6P152
CDH23	NM_001171930.2 link	c.1301A>G	p.Asn434Ser	missense_variant	Exon 14 of 32		NP_001165401.1	Q9H251A0A087WYR8Q6P152
CDH23	NM_001171931.2 link	c.1301A>G	p.Asn434Ser	missense_variant	Exon 14 of 26		NP_001165402.1	Q9H251Q8N5B3
CDH23	NM_052836.4 link	c.1301A>G	p.Asn434Ser	missense_variant	Exon 14 of 14		NP_443068.1	Q9H251-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDH23	ENST00000224721.12 link	c.1301A>G	p.Asn434Ser	missense_variant	Exon 14 of 70	5	NM_022124.6	ENSP00000224721.9		Q9H251-1

Frequencies

GnomAD3 genomes

AF:

0.000717

AC:

109

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00246

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

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:

0.00

GnomAD2 exomes

AF:

0.000141

AC:

AN:

249008

AF XY:

0.000111

show subpopulations

Gnomad AFR exome

AF:

0.00220

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000677

AC:

AN:

1461466

Hom.:

Cov.:

AF XY:

0.0000605

AC XY:

AN XY:

726990

show subpopulations

African (AFR)

AF:

0.00272

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86240

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5674

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111770

Other (OTH)

AF:

0.0000994

AC:

AN:

60362

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.000716

AC:

109

AN:

152186

Hom.:

Cov.:

AF XY:

0.000632

AC XY:

AN XY:

74414

show subpopulations

African (AFR)

AF:

0.00246

AC:

102

AN:

41526

American (AMR)

AF:

0.000327

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5156

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67992

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

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:

0.000210

Hom.:

Bravo

AF:

0.000695

ESP6500AA

AF:

0.00245

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000198

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 01, 2018

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 02, 2021

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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 -

not specified

Uncertain:1

Feb 18, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant classified as Uncertain Significance - Favor Benign. The p.Asn434Ser var iant in CDH23 has been previously identified by our laboratory in 1 individual w ith hearing loss who did not carry a second CDH23 variant. This variant has also been identified in 0.2% (24/9802) of African chromosomes by the Exome Aggregati on Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs139287714). Althoug h this variant has been seen in the general population, its frequency is not hig h enough to rule out a pathogenic role. Computational prediction tools and conse rvation analyses suggest that this variant may impact the protein, though this i nformation is not predictive enough to determine pathogenicity. In summary, the clinical significance of this variant cannot be determined with certainty; howev er, the frequency data suggest that it is more likely to be benign. -

Usher syndrome type 1

Uncertain:1

Jan 08, 2020

Natera, Inc.

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.38

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.015

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

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.018

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

MetaSVM

Benign

-0.87

MutationAssessor

Benign

0.18

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

PhyloP100

9.3

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-1.4

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

REVEL

Benign

0.21

Sift

Benign

0.41

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

Sift4G

Uncertain

0.014

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

Polyphen

0.98, 1.0

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

Vest4

0.75

MVP

0.82

ClinPred

0.14

GERP RS

5.5

Varity_R

0.22

gMVP

0.35

Mutation Taster

=45/55

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over