10-53822337-GA-GAA

Variant names:

• chr10-53822337-G-GA
• rs1554819925
• NM_033056.4:c.5388dupT

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The NM_033056.4(PCDH15):​c.5388dupT​(p.Pro1797SerfsTer51) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,828 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: PCDH15 NM_033056.4 frameshift
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: -0.311
• Publications: 0 publications found

Genes affected

PCDH15 (HGNC:14674): (protocadherin related 15) This gene is a member of the cadherin superfamily. Family members encode integral membrane proteins that mediate calcium-dependent cell-cell adhesion. It plays an essential role in maintenance of normal retinal and cochlear function. Mutations in this gene result in hearing loss and Usher Syndrome Type IF (USH1F). Extensive alternative splicing resulting in multiple isoforms has been observed in the mouse ortholog. Similar alternatively spliced transcripts are inferred to occur in human, and additional variants are likely to occur. [provided by RefSeq, Dec 2008]

PCDH15 Gene-Disease associations (from GenCC):

• autosomal recessive nonsyndromic hearing loss 23

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
• Usher syndrome type 1

  Inheritance: AR, Unknown Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• Usher syndrome type 1F

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• hearing loss, autosomal recessive

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 6 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033056.4. 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
	PCDH15	NM_033056.4	MANE Plus Clinical	c.5388dupT	p.Pro1797SerfsTer51	frameshift	Exon 33 of 33	NP_149045.3
	PCDH15	NM_001384140.1	MANE Select	c.4368-2108dupT		intron	N/A	NP_001371069.1	Q96QU1-7
	PCDH15	NM_001142763.2		c.5409dupT	p.Pro1804SerfsTer51	frameshift	Exon 35 of 35	NP_001136235.1	A2A3D8

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCDH15	ENST00000320301.11	TSL:1 MANE Plus Clinical	c.5388dupT	p.Pro1797SerfsTer51	frameshift	Exon 33 of 33	ENSP00000322604.6	Q96QU1-1
	PCDH15	ENST00000644397.2	MANE Select	c.4368-2108dupT		intron	N/A	ENSP00000495195.1	Q96QU1-7
	PCDH15	ENST00000395445.6	TSL:1	c.4388+5055dupT		intron	N/A	ENSP00000378832.2	Q96QU1-4

Frequencies

GnomAD3 genomes AF: 0.00000659 AC: 1 AN: 151710 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000194

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.00000659 AC: 1 AN: 151828 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74234

African (AFR) AF: 0.00 AC: 0 AN: 41436

American (AMR) AF: 0.00 AC: 0 AN: 15192

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.000195 AC: 1 AN: 5138

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67880

Other (OTH) AF: 0.00 AC: 0 AN: 2100

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Usher syndrome type 1F (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.31
Mutation Taster		=119/81	polymorphism

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: rs1554819925; hg19: chr10-55582097;