rs794729204

Positions:

chr1-216200071-A-G

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1PM2PM5PP3_StrongPP5_Moderate

The ENST00000307340.8(USH2A):c.3367T>C(p.Tyr1123His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,613,674 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 Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y1123C) has been classified as Likely pathogenic.

Frequency

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

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

USH2A
ENST00000307340.8 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 7.64

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:

USH2A-AS1 (HGNC:40606): (USH2A antisense RNA 1)

USH2A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM1

In a domain Fibronectin type-III 1 (size 88) in uniprot entity USH2A_HUMAN there are 15 pathogenic changes around while only 5 benign (75%) in ENST00000307340.8

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr1-216200070-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 242397.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.948

PP5

Variant 1-216200071-A-G is Pathogenic according to our data. Variant chr1-216200071-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 242590.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr1-216200071-A-G 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.3367T>C	p.Tyr1123His	missense_variant	17/72	ENST00000307340.8	NP_996816.3
USH2A-AS1	XR_922596.4 linkuse as main transcript	n.691+4146A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8 linkuse as main transcript	c.3367T>C	p.Tyr1123His	missense_variant	17/72	1	NM_206933.4	ENSP00000305941	P1	O75445-1
USH2A	ENST00000366942.3 linkuse as main transcript	c.3367T>C	p.Tyr1123His	missense_variant	17/21	1		ENSP00000355909		O75445-2
USH2A-AS1	ENST00000420867.1 linkuse as main transcript	n.363-3959A>G		intron_variant, non_coding_transcript_variant		3
USH2A	ENST00000674083.1 linkuse as main transcript	c.3367T>C	p.Tyr1123His	missense_variant	17/73			ENSP00000501296		O75445-3

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152016

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000189

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

250862

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135584

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:

0.000509

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461658

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

727154

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000562

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152016

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000189

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 14, 2023

This sequence change replaces tyrosine, which is neutral and polar, with histidine, which is basic and polar, at codon 1123 of the USH2A protein (p.Tyr1123His). This variant is present in population databases (rs794729204, gnomAD 0.05%). This missense change has been observed in individuals with retinitis pigmentosa (PMID: 28559085; Invitae). ClinVar contains an entry for this variant (Variation ID: 242590). 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) performed at Invitae indicates that this missense variant is expected to disrupt USH2A protein function with a positive predictive value of 95%. This variant disrupts the p.Tyr1123 amino acid residue in USH2A. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 24367894, 26927203, 33576794; Invitae). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.81

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.39

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.53

D;.

Eigen

Uncertain

0.66

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.83

T;T

M_CAP

Pathogenic

0.30

MetaRNN

Pathogenic

0.95

D;D

MetaSVM

Uncertain

0.63

MutationAssessor

Pathogenic

3.6

H;H

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-3.5

D;D

REVEL

Pathogenic

0.67

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.87

MutPred

0.71

Gain of disorder (P = 0.0267);Gain of disorder (P = 0.0267);

MVP

0.89

MPC

0.26

ClinPred

0.95

GERP RS

4.9

Varity_R

0.57

gMVP

0.84

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