chr10-71706913-C-T

Position:

• chr10-71706913-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Moderate BP6 BP7 BS2

The NM_022124.6(CDH23):​c.2970C>T​(p.Asp990Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00442 in 1,602,638 control chromosomes in the GnomAD database, including 24 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 0.0028 (1 hom., cov: 33)
  • Exomes 𝑓: 0.0046 (23 hom.)
• Consequence: CDH23 NM_022124.6 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:9
• Conservation: PhyloP100: -0.724

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]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.28).
• BP6: Variant 10-71706913-C-T is Benign according to our data. Variant chr10-71706913-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 44110.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=1, Benign=4}. Variant chr10-71706913-C-T is described in Lovd as [Benign].
• BP7: Synonymous conserved (PhyloP=-0.724 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 23 AD,AR,Digenic gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDH23	NM_022124.6	c.2970C>T	p.Asp990Asp	synonymous_variant	26/70	ENST00000224721.12	NP_071407.4
CDH23	NM_001171930.2	c.2970C>T	p.Asp990Asp	synonymous_variant	26/32		NP_001165401.1
CDH23	NM_001171931.2	c.2970C>T	p.Asp990Asp	synonymous_variant	26/26		NP_001165402.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDH23	ENST00000224721.12	c.2970C>T	p.Asp990Asp	synonymous_variant	26/70	5	NM_022124.6	ENSP00000224721.9

Frequencies

GnomAD3 genomes AF: 0.00280 AC: 426 AN: 152242 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.000555

Gnomad AMI AF: 0.0428

Gnomad AMR AF: 0.000785

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00358

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00454

Gnomad OTH AF: 0.00239

GnomAD3 exomes AF: 0.00336 AC: 771 AN: 229170 Hom.: 4 AF XY: 0.00318 AC XY: 395 AN XY: 124342

Gnomad AFR exome AF: 0.000230

Gnomad AMR exome AF: 0.000704

Gnomad ASJ exome AF: 0.000105

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000394

Gnomad FIN exome AF: 0.00388

Gnomad NFE exome AF: 0.00621

Gnomad OTH exome AF: 0.00227

GnomAD4 exome AF: 0.00459 AC: 6659 AN: 1450278 Hom.: 23 Cov.: 31 AF XY: 0.00449 AC XY: 3237 AN XY: 720204

Gnomad4 AFR exome AF: 0.000482

Gnomad4 AMR exome AF: 0.000671

Gnomad4 ASJ exome AF: 0.000194

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000298

Gnomad4 FIN exome AF: 0.00467

Gnomad4 NFE exome AF: 0.00554

Gnomad4 OTH exome AF: 0.00337

GnomAD4 genome AF: 0.00280 AC: 426 AN: 152360 Hom.: 1 Cov.: 33 AF XY: 0.00267 AC XY: 199 AN XY: 74502

Gnomad4 AFR AF: 0.000553

Gnomad4 AMR AF: 0.000784

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00358

Gnomad4 NFE AF: 0.00454

Gnomad4 OTH AF: 0.00237

Alfa AF: 0.00440 Hom.: 0

Bravo AF: 0.00279

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:9

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Benign:4

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2024	CDH23: BP4, BP7, BS2 -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jul 09, 2019	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Sep 04, 2018	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Dec 28, 2012	Asp990Asp in Exon 26A of CDH23: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue, is not located withi n the splice consensus sequence, and has been identified in 0.4% (35/8480) of Eu ropean American chromosomes from a broad population by the NHLBI Exome Sequencin g Project (http://evs.gs.washington.edu/EVS; dbSNP rs56216952). -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 21, 2014	- -

Usher syndrome type 1D Benign:2

Likely benign, 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 and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -
Likely benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	May 18, 2021	- -

Autosomal recessive nonsyndromic hearing loss 12 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. -

Usher syndrome type 1 Benign:1

Benign, no assertion criteria provided

clinical testing

Natera, Inc.

Oct 21, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.28
CADD	Benign	6.4
DANN	Benign	0.90

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

Other links and lift over

dbSNP: rs56216952; hg19: chr10-73466670;