rs200328570

Positions:

chr10-71511168-G-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_022124.6(CDH23):c.385G>A(p.Ala129Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000535 in 1,613,624 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. A129A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00056 ( 2 hom. )

Consequence

CDH23
NM_022124.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:9

Conservation

PhyloP100: 4.26

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 links:

CDH23-AS1 (HGNC:31433): (CDH23 antisense RNA 1)

CDH23-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.095492005).

BS2

High Homozygotes in GnomAdExome4 at 2 AD,AR,Digenic gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDH23	NM_022124.6 linkuse as main transcript	c.385G>A	p.Ala129Thr	missense_variant	6/70	ENST00000224721.12	NP_071407.4
CDH23-AS1	NR_120672.1 linkuse as main transcript	n.143+610C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDH23	ENST00000224721.12 linkuse as main transcript	c.385G>A	p.Ala129Thr	missense_variant	6/70	5	NM_022124.6	ENSP00000224721	P1	Q9H251-1
CDH23-AS1	ENST00000428918.1 linkuse as main transcript	n.96+610C>T		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes

AF:

0.000276

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000241

AC:

AN:

249268

Hom.:

AF XY:

0.000222

AC XY:

AN XY:

135226

show subpopulations

Gnomad AFR exome

AF:

0.000129

Gnomad AMR exome

AF:

0.0000869

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000490

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000345

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000562

AC:

822

AN:

1461364

Hom.:

Cov.:

AF XY:

0.000556

AC XY:

404

AN XY:

726976

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000475

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000668

Gnomad4 OTH exome

AF:

0.000514

GnomAD4 genome

AF:

0.000276

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74436

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000426

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000371

Hom.:

Bravo

AF:

0.000246

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000838

AC:

ExAC

AF:

0.000248

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000652

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 22, 2015	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 13, 2022	This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 129 of the CDH23 protein (p.Ala129Thr). This variant is present in population databases (rs200328570, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with CDH23-related conditions. ClinVar contains an entry for this variant (Variation ID: 178293). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CDH23 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Aug 04, 2021	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

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 10, 2017

The p.Ala129Thr variant in CDH23 has been previously identified by our laborator y in 4 individuals with hearing loss; however, a variant affecting the remaining copy of CDH23 was not identified in any of these individuals and one had an alt ernate genetic etiology. This variant has been identified in 0.05% (15/30782) of South Asian chromosomes and 0.04% (47/126656) of European chromosomes by the Ge nome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs200 328570); however, this frequency is not high enough to rule out a pathogenic rol e. Computational prediction tools do not provide strong support for or against a n impact to the protein. In summary, the clinical significance of the p.Ala129Th r variant is uncertain. -

CDH23-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 23, 2024

The CDH23 c.385G>A variant is predicted to result in the amino acid substitution p.Ala129Thr. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.049% of alleles in individuals of South Asian descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 06, 2022

The c.385G>A (p.A129T) alteration is located in exon 6 (coding exon 5) of the CDH23 gene. This alteration results from a G to A substitution at nucleotide position 385, causing the alanine (A) at amino acid position 129 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Usher syndrome type 1

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 15, 2020

- -

Usher syndrome type 1D

Uncertain:1

Uncertain significance, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Autosomal recessive nonsyndromic hearing loss 12

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.078

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.42

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.014

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

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.87

D;D;D;D;D;D;D;D;T

M_CAP

Benign

0.020

MetaRNN

Benign

0.095

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

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

.;.;M;M;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.9

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

REVEL

Benign

0.13

Sift

Benign

0.12

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

Sift4G

Uncertain

0.0080

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

Polyphen

1.0, 0.37

.;.;D;B;.;.;.;.;.

Vest4

0.33

MVP

0.65

ClinPred

0.19

GERP RS

5.6

Varity_R

0.16

gMVP

0.26

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