rs397517333

Positions:

• chr10-71777843-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PP3_Moderate PP5

The NM_022124.6(CDH23):​c.5009T>A​(p.Val1670Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000328 in 1,461,688 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000033 (1 hom.)
• Consequence: CDH23 NM_022124.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:2
• Conservation: PhyloP100: 7.99

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 Uncertain_significance. Variant got 3 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.882
• PP5: Variant 10-71777843-T-A is Pathogenic according to our data. Variant chr10-71777843-T-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 45959.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDH23	NM_022124.6	c.5009T>A	p.Val1670Asp	missense_variant	39/70	ENST00000224721.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDH23	ENST00000224721.12	c.5009T>A	p.Val1670Asp	missense_variant	39/70	5	NM_022124.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000682 AC: 17 AN: 249302 Hom.: 0 AF XY: 0.0000961 AC XY: 13 AN XY: 135232

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000425

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000177

Gnomad OTH exome AF: 0.000330

GnomAD4 exome AF: 0.0000328 AC: 48 AN: 1461688 Hom.: 1 Cov.: 32 AF XY: 0.0000440 AC XY: 32 AN XY: 727134

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000429

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000630

Gnomad4 OTH exome AF: 0.0000663

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000577 AC: 7

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Dec 08, 2023

This sequence change replaces valine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 1670 of the CDH23 protein (p.Val1670Asp). This variant is present in population databases (rs397517333, gnomAD 0.04%). This missense change has been observed in individual(s) with deafness (PMID: 33316915). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 45959). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on CDH23 protein function. For these reasons, this variant has been classified as Pathogenic. -

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jun 18, 2010

Variant classified as Uncertain Significance - Favor Pathogenic. -

Usher syndrome type 1 Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Apr 16, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Benign	-0.014	T
BayesDel_noAF	Uncertain	0.060
CADD	Uncertain	26
DANN	Uncertain	0.98
DEOGEN2	Benign	0.36	T;D
Eigen	Pathogenic	0.77
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.88	D;D
MetaSVM	Uncertain	0.54	D
MutationTaster	Benign	1.0	D
PrimateAI	Benign	0.41	T
Sift4G	Pathogenic	0.0010	D;.
Polyphen		0.99	.;D
Vest4		0.90
MutPred		0.73		Gain of disorder (P = 0.0108);Gain of disorder (P = 0.0108);
MVP		0.89
ClinPred		0.95	D
GERP RS		5.8
Varity_R		0.41
gMVP		0.93

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: rs397517333; hg19: chr10-73537600;