10-71712674-C-G

Position:

• chr10-71712674-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP3

The NM_022124.6(CDH23):​c.3230C>G​(p.Pro1077Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1077L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: CDH23 NM_022124.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.88

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]

C10orf105 (HGNC:20304): (chromosome 10 open reading frame 105) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_022124.6
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.836

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDH23	NM_022124.6	c.3230C>G	p.Pro1077Arg	missense_variant	28/70	ENST00000224721.12
C10orf105	NM_001164375.3	c.*3262G>C		3_prime_UTR_variant	2/2	ENST00000441508.4
CDH23	NM_001171930.2	c.3230C>G	p.Pro1077Arg	missense_variant	28/32
C10orf105	NM_001168390.2	c.*3262G>C		3_prime_UTR_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDH23	ENST00000224721.12	c.3230C>G	p.Pro1077Arg	missense_variant	28/70	5	NM_022124.6	P1
C10orf105	ENST00000441508.4	c.*3262G>C		3_prime_UTR_variant	2/2	1	NM_001164375.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 28, 2022

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C65"). This variant has not been reported in the literature in individuals affected with CDH23-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1077 of the CDH23 protein (p.Pro1077Arg). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.34
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.28
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.026	T;T;T;T;.
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.87	D;D;D;D;D
M_CAP	Pathogenic	0.43	D
MetaRNN	Pathogenic	0.84	D;D;D;D;D
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Benign	0.070	.;.;N;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.52	T
REVEL	Benign	0.25
Sift4G	Uncertain	0.0040	D;D;.;D;.
Polyphen		0.73	.;.;P;.;.
Vest4		0.90
MutPred		0.58		Loss of methylation at K1080 (P = 0.0405);Loss of methylation at K1080 (P = 0.0405);Loss of methylation at K1080 (P = 0.0405);Loss of methylation at K1080 (P = 0.0405);Loss of methylation at K1080 (P = 0.0405);
MVP		0.90
ClinPred		0.96	D
GERP RS		4.9
Varity_R		0.35
gMVP		0.58

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-73472431;