NM_022124.6:c.193delC

Variant names:

• chr10-71510124-AC-A
• rs796051861
• NM_022124.6:c.193delC

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_022124.6(CDH23):​c.193delC​(p.Leu65TrpfsTer49) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,461,700 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. L65L) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: CDH23 NM_022124.6 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5 O:2
• Conservation: PhyloP100: 1.95
• Publications: 5 publications found

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

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-71510124-AC-A is Pathogenic according to our data. Variant chr10-71510124-AC-A is described in ClinVar as Pathogenic. ClinVar VariationId is 4925.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022124.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDH23	NM_022124.6	MANE Select	c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 70	NP_071407.4
	CDH23	NM_001171930.2		c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 32	NP_001165401.1	A0A087WYR8
	CDH23	NM_001171931.2		c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 26	NP_001165402.1	Q8N5B3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDH23	ENST00000224721.12	TSL:5 MANE Select	c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 70	ENSP00000224721.9	Q9H251-1
	CDH23	ENST00000616684.4	TSL:5	c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 32	ENSP00000482036.2	A0A087WYR8
	CDH23	ENST00000398809.9	TSL:5	c.193delC	p.Leu65TrpfsTer49	frameshift	Exon 4 of 32	ENSP00000381789.5	A0A0A0MS94

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461700 Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7 AN XY: 727136

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000144 AC: 16 AN: 1111860

Other (OTH) AF: 0.0000166 AC: 1 AN: 60374

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
2	-	-	not provided (2)
1	-	-	Autosomal recessive nonsyndromic hearing loss 12;C1832845:Usher syndrome type 1D;C4539685:Pituitary adenoma 5, multiple types (1)
1	-	-	Usher syndrome type 1D (1)
1	-	-	USHER SYNDROME, TYPE ID/F, DIGENIC (1)
-	-	-	Autosomal recessive nonsyndromic hearing loss 12;C1832845:Usher syndrome type 1D (1)
-	-	-	Usher syndrome type 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.0
Mutation Taster		=0/200	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs796051861; hg19: chr10-73269881;