rs727503364

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_033056.4(PCDH15):c.5189T>A(p.Ile1730Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,613,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

PCDH15
NM_033056.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: -0.221

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 Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.027060926).

BP6

Variant 10-53822537-A-T is Benign according to our data. Variant chr10-53822537-A-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 164904.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PCDH15	NM_033056.4 linkuse as main transcript	c.5189T>A	p.Ile1730Asn	missense_variant	33/33	ENST00000320301.11
PCDH15	NM_001384140.1 linkuse as main transcript	c.4368-2307T>A		intron_variant		ENST00000644397.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCDH15	ENST00000320301.11 linkuse as main transcript	c.5189T>A	p.Ile1730Asn	missense_variant	33/33	1	NM_033056.4		Q96QU1-1
PCDH15	ENST00000644397.2 linkuse as main transcript	c.4368-2307T>A		intron_variant			NM_001384140.1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

151998

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000966

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000240

AC:

AN:

250452

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135490

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000326

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000958

AC:

AN:

1461652

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727120

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000353

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74396

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000968

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 29, 2023

The c.5189T>A (p.I1730N) alteration is located in exon 33 (coding exon 32) of the PCDH15 gene. This alteration results from a T to A substitution at nucleotide position 5189, causing the isoleucine (I) at amino acid position 1730 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 26, 2021

This sequence change replaces isoleucine with asparagine at codon 1730 of the PCDH15 protein (p.Ile1730Asn). The isoleucine residue is weakly conserved and there is a large physicochemical difference between isoleucine and asparagine. This variant is present in population databases (rs727503364, ExAC 0.02%). 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: 164904). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The asparagine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jun 10, 2014

Ile1730Asn in exon 33 of PCDH15: This variant is not expected to have clinical s ignificance due to a lack of conservation across species, including mammals. Of note, bushbaby, mole-rate, and guinea pig have an asparagine (Asn) at this posi tion despite high nearby amino acid conservation. In addition, other computatio nal prediction tools do not suggest a high likelihood of impact to the protein. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.57

Cadd

Benign

0.15

Dann

Benign

0.42

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.74

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

M_CAP

Benign

0.011

MetaRNN

Benign

0.027

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

MetaSVM

Benign

-1.1

MutationTaster

Benign

1.0

N;N;N;N;N;N;N;N;N;N;N;N;N;N;N

PrimateAI

Benign

0.30

PROVEAN

Benign

0.58

N;.;.;N;N;N;.;N;N

REVEL

Benign

0.051

Sift

Benign

0.20

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

Sift4G

Benign

0.16

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

Polyphen

0.0

B;.;.;B;B;B;.;B;B

Vest4

0.073

MutPred

0.13

.;.;.;Loss of sheet (P = 0.0228);.;.;.;.;.;

MVP

0.30

MPC

0.038

ClinPred

0.018

GERP RS

-2.3

Varity_R

0.042

gMVP

0.19

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