1-216190241-C-T

Position:

chr1-216190241-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP3_ModeratePP5

The NM_206933.4(USH2A):c.4378G>A(p.Gly1460Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000118 in 1,612,224 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

USH2A
NM_206933.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:4

Conservation

PhyloP100: 6.70

Variant links:

Genes affected

USH2A (HGNC:12601): (usherin) This gene encodes a protein that contains laminin EGF motifs, a pentaxin domain, and many fibronectin type III motifs. The protein is found in the basement membrane, and may be important in development and homeostasis of the inner ear and retina. Mutations within this gene have been associated with Usher syndrome type IIa and retinitis pigmentosa. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

USH2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM1

In a domain Fibronectin type-III 4 (size 104) in uniprot entity USH2A_HUMAN there are 20 pathogenic changes around while only 1 benign (95%) in NM_206933.4

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.875

PP5

Variant 1-216190241-C-T is Pathogenic according to our data. Variant chr1-216190241-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 178581.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=2, Uncertain_significance=3, Pathogenic=1}. Variant chr1-216190241-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
USH2A	NM_206933.4 linkuse as main transcript	c.4378G>A	p.Gly1460Arg	missense_variant	20/72	ENST00000307340.8	NP_996816.3
USH2A	NM_007123.6 linkuse as main transcript	c.4378G>A	p.Gly1460Arg	missense_variant	20/21		NP_009054.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8 linkuse as main transcript	c.4378G>A	p.Gly1460Arg	missense_variant	20/72	1	NM_206933.4	ENSP00000305941	P1	O75445-1
USH2A	ENST00000366942.3 linkuse as main transcript	c.4378G>A	p.Gly1460Arg	missense_variant	20/21	1		ENSP00000355909		O75445-2
USH2A	ENST00000674083.1 linkuse as main transcript	c.4378G>A	p.Gly1460Arg	missense_variant	20/73			ENSP00000501296		O75445-3

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151876

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000160

AC:

AN:

250642

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135474

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1460348

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726522

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000449

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000108

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151876

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74172

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

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:

0.0000330

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:4Uncertain:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Retinitis pigmentosa 39

Pathogenic:1Uncertain:1

Uncertain significance, criteria provided, single submitter	research	Ocular Genomics Institute, Massachusetts Eye and Ear	Apr 08, 2021	The USH2A c.4378G>A variant was identified in an individual with retinitis pigmentosa with a presumed recessive inheritance pattern. Through a review of available evidence we were able to apply the following criteria: PM2, PM3. Based on this evidence we have classified this variant as Variant of Uncertain Significance. -
Likely pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Mar 22, 2024	- -

Usher syndrome

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Nov 17, 2023

Variant summary: USH2A c.4378G>A (p.Gly1460Arg) results in a non-conservative amino acid change located in the Fibronectin type III domain (IPR003961) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 1.6e-05 in 250642 control chromosomes. c.4378G>A has been reported in the literature in individuals affected with retinitis pigmentosa (Wang_2014, Lenassi_2015, Zhu_2021), and some were compound heterozygous with likely pathogenic variants. These data indicate that the variant is likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 24154662, 25649381, 32675063). Five submitters have cited clinical-significance assessments for this variant to ClinVar after 2014, and classified it as pathogenic (n=1) or uncertain significance (n=4). Based on the evidence outlined above, the variant was classified as likely pathogenic. -

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 25, 2024

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1460 of the USH2A protein (p.Gly1460Arg). This variant is present in population databases (rs139311927, gnomAD 0.004%). This missense change has been observed in individual(s) with autosomal recessive inherited retinal dystrophy (PMID: 24154662, 25649381). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 178581). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on USH2A protein function. For these reasons, this variant has been classified as Pathogenic. -

USH2A-related disorder

Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 11, 2024

The USH2A c.4378G>A variant is predicted to result in the amino acid substitution p.Gly1460Arg. This variant has been reported along with a second variant in USH2A in individuals with retinitis pigmentosa (Wang et al. 2014. PubMed ID: 24154662; Lenassi et al. 2015. PubMed ID: 25649381; Qu et al. 2020. PubMed ID: 31904091). We have also observed this variant with a second USH2A variant in a number of patients with hearing loss or inherited retinal disease (PreventionGenetics internal data). This variant is reported in 0.0035% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant is interpreted as likely pathogenic. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 14, 2020

Variant classified as Uncertain Significance - Favor Pathogenic. The p.Gly1460Arg variant in USH2A has been reported in two individuals with isolated retinitis pigmentosa (Wang 2014 PMID 24154662, Lenassi 2015 PMID 25649381). In one individual, a second missense variant in USH2A was identified, and the two variants segregated with the isolated retinitis pigmentosa in one sibling (Wang 2014 PMID 24154662). In the remaining individual, a second truncating USH2A variant was also identified (Lenassi 2015 PMID 25649381). It has also been previously reported in the heterozygous state by our laboratory in two individuals with sensorineural hearing loss. This variant has also been identified in 0.004% (4/113294) of European chromosomes by gnomAD (http://gnomad.broadinstitute.org). Computational prediction tools and conservation analysis suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, while there is some suspicion for a pathogenic role, the clinical significance of this variant is uncertain. ACMG/AMP Criteria applied: PM2, PP3, PP1, PM3_Supporting. -

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

Usher syndrome type 2A

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Sep 16, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Uncertain

0.13

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

T;.

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.90

D;D

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Benign

-0.54

MutationAssessor

Pathogenic

3.1

M;M

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-4.1

D;D

REVEL

Uncertain

0.39

Sift

Benign

0.031

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.85

MutPred

0.31

Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);

MVP

0.97

MPC

0.25

ClinPred

0.92

GERP RS

5.2

Varity_R

0.34

gMVP

0.83

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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