chr1-215758743-G-T

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM2_SupportingPM3_SupportingPVS1

This summary comes from the ClinGen Evidence Repository: The p.Tyr3747X variant in USH2A is predicted to cause a premature stop codon in biologically-relevant-exon 58/72 that leads to a truncated or absent protein in a gene in which loss-of-function is an established mechanism (PVS1). The allele frequency of the p.Tyr3747X variant in the Ush2A gene is 0.017% (4/24020) of African chromosomes by the Genome Aggregation Database (http://gnomad.broadinstitute.org), which is a low enough frequency to award PM2_Supporting based on the thresholds defined by the ClinGen Hearing Loss Expert Panel for autosomal recessive hearing loss ( PM2_Supporting). This variant has been detected in 1 patient with hearing loss in trans with a suspected pathogenic variant (PM3_Supporting, Partners LMM internal data SCV000713838.1). In summary, this variant meets criteria to be classified as pathogenic for autosomal recessive Usher syndrome based on the ACMG/AMP criteria applied: PVS1, PM2_Supporting, PM3_Supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA1393780/MONDO:0019501/005

Frequency

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

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

USH2A
NM_206933.4 stop_gained

Scores

Clinical Significance

Pathogenic reviewed by expert panel P:6

Conservation

PhyloP100: 2.21

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 Pathogenic. Variant got 10 ACMG points.

PVS1

For more information check the summary or visit ClinGen Evidence Repository.

PM2

For more information check the summary or visit ClinGen Evidence Repository.

PM3

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH2A	NM_206933.4 link	c.11241C>A	p.Tyr3747*	stop_gained	Exon 58 of 72	ENST00000307340.8	NP_996816.3	O75445-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8 link	c.11241C>A	p.Tyr3747*	stop_gained	Exon 58 of 72	1	NM_206933.4	ENSP00000305941.3		O75445-1
USH2A	ENST00000674083.1 link	c.11241C>A	p.Tyr3747*	stop_gained	Exon 58 of 73			ENSP00000501296.1		O75445-3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251150

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135750

show subpopulations

Gnomad AFR exome

AF:

0.000185

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461502

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727068

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:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.0000724

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:6

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

Jun 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Tyr3747*) in the USH2A gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in USH2A are known to be pathogenic (PMID: 10729113, 10909849, 20507924, 25649381). This variant is present in population databases (rs777465132, gnomAD 0.02%). This premature translational stop signal has been observed in individual(s) with inherited retinal dystrophy (PMID: 30337596). ClinVar contains an entry for this variant (Variation ID: 506273). For these reasons, this variant has been classified as Pathogenic. -

Jul 21, 2023

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Reported as pathogenic by the ClinGen Hearing Loss Expert Panel (Oza et al., 2018); This variant is associated with the following publications: (PMID: 30311386, 30337596, 34948090) -

Usher syndrome

Pathogenic:1

Sep 17, 2018

ClinGen Hearing Loss Variant Curation Expert Panel

Significance: Pathogenic

Review Status: reviewed by expert panel

Collection Method: curation

The p.Tyr3747X variant in USH2A is predicted to cause a premature stop codon in biologically-relevant-exon 58/72 that leads to a truncated or absent protein in a gene in which loss-of-function is an established mechanism (PVS1). The allele frequency of the p.Tyr3747X variant in the Ush2A gene is 0.017% (4/24020) of African chromosomes by the Genome Aggregation Database (http://gnomad.broadinstitute.org), which is a low enough frequency to award PM2_Supporting based on the thresholds defined by the ClinGen Hearing Loss Expert Panel for autosomal recessive hearing loss ( PM2_Supporting). This variant has been detected in 1 patient with hearing loss in trans with a suspected pathogenic variant (PM3_Supporting, Partners LMM internal data SCV000713838.1). In summary, this variant meets criteria to be classified as pathogenic for autosomal recessive Usher syndrome based on the ACMG/AMP criteria applied: PVS1, PM2_Supporting, PM3_Supporting. -

Retinitis pigmentosa 39

Pathogenic:1

May 16, 2023

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Rare genetic deafness

Pathogenic:1

Jan 30, 2018

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Tyr3747X variant in USH2A has not been previously reported in individuals with hearing loss or Usher syndrome, but has been identified in 0.02% (4/24020) of African chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad .broadinstitute.org; dbSNP rs777465132). This nonsense variant leads to a premat ure termination codon at position 3747, which is predicted to lead to a truncate d or absent protein. Variants in USH2A resulting in a loss of function of the pr otein is an established disease mechanism in autosomal recessive Usher syndrome. In addition, this variant is likely in trans with the deletion of exons 63-64 i n USH2A given that previous cases with the deletion did not carry this variant. This provides additional evidence that the variant is pathogenic. In summary, th is variant meets our criteria to be classified as pathogenic for autosomal reces sive Usher syndrome. ACMG/AMP Criteria applied: PVS1; PM2; PM3. -

Usher syndrome type 2A

Pathogenic:1

Sep 16, 2020

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.60

CADD

Pathogenic

DANN

Uncertain

0.99

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.24

FATHMM_MKL

Uncertain

0.94

Vest4

0.93

GERP RS

1.8

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.37

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.37

Position offset: 9

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