rs397517450

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_033056.4(PCDH15):c.1169A>G(p.Asn390Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000192 in 1,613,938 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. N390N) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

PCDH15
NM_033056.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 7.99

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PCDH15	NM_033056.4 linkuse as main transcript	c.1169A>G	p.Asn390Ser	missense_variant	11/33	ENST00000320301.11
PCDH15	NM_001384140.1 linkuse as main transcript	c.1169A>G	p.Asn390Ser	missense_variant	11/38	ENST00000644397.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCDH15	ENST00000320301.11 linkuse as main transcript	c.1169A>G	p.Asn390Ser	missense_variant	11/33	1	NM_033056.4		Q96QU1-1
PCDH15	ENST00000644397.2 linkuse as main transcript	c.1169A>G	p.Asn390Ser	missense_variant	11/38		NM_001384140.1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251448

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135898

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1461734

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727174

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000153

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000793

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Usher syndrome type 1F

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 14, 2021	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Nov 11, 2019	- -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Jul 19, 2022	This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 390 of the PCDH15 protein (p.Asn390Ser). This variant is present in population databases (rs397517450, gnomAD 0.009%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with PCDH15-related conditions. ClinVar contains an entry for this variant (Variation ID: 46437). 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: "Probably Damaging"; Align-GVGD: "Class C0"). 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Nov 08, 2022	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Oct 07, 2010

The Asn390Ser variant in PCDH15 has not been reported in the literature nor prev iously identified by our laboratory. This residue is conserved across species an d computational analyses (homology, PolyPhen, SIFT, AlignGVGD) suggest that the Asn390Ser variant may impact the protein. However, this information is not predi ctive enough to assume pathogenicity. It should be noted that this lab has only sequenced the PCDH15 in 170 patients and limited controls such that the full spe ctrum of benign variation has not yet been defined for this gene, increasing the possibility that this may be a benign variant. In summary, the clinical signifi cance of this variant cannot be determined with certainty at this time. -

Autosomal recessive nonsyndromic hearing loss 23

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Jul 14, 2021

- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 06, 2023

The c.1169A>G (p.N390S) alteration is located in exon 11 (coding exon 10) of the PCDH15 gene. This alteration results from a A to G substitution at nucleotide position 1169, causing the asparagine (N) at amino acid position 390 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Usher syndrome type 1

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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.38

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.039

T;.;.;.;.;T;.;T;.;T;.;.;T;.;T;.;.;.;.;.;.;T;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

1.0

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.070

MetaRNN

Uncertain

0.47

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.52

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-2.3

N;.;.;.;.;.;N;.;D;.;N;N;.;N;.;.;N;N;N;.;N;N;N

REVEL

Uncertain

0.31

Sift

Benign

0.18

T;.;.;.;.;.;D;.;D;.;T;T;.;T;.;.;T;T;T;.;D;T;T

Sift4G

Pathogenic

0.0

D;.;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

Polyphen

1.0, 1.0, 1.0, 1.0

.;.;.;.;.;.;.;.;.;.;.;D;.;D;.;.;D;D;D;.;D;D;D

Vest4

0.71

MVP

0.83

MPC

0.19

ClinPred

0.62

GERP RS

5.2

Varity_R

0.20

gMVP

0.53

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over