rs772808534

Positions:

chr1-216422237-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_206933.4(USH2A):c.100C>T(p.Arg34*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000112 in 1,612,962 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 Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. R34R) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

USH2A
NM_206933.4 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:11

Conservation

PhyloP100: 4.85

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 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 1-216422237-G-A is Pathogenic according to our data. Variant chr1-216422237-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 438000.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-216422237-G-A is described in Lovd as [Pathogenic]. Variant chr1-216422237-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
USH2A	NM_206933.4 link	c.100C>T	p.Arg34*	stop_gained	2/72	ENST00000307340.8	NP_996816.3	O75445-1
USH2A	NM_007123.6 link	c.100C>T	p.Arg34*	stop_gained	2/21		NP_009054.6	O75445-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
USH2A	ENST00000307340.8 link	c.100C>T	p.Arg34*	stop_gained	2/72	1	NM_206933.4	ENSP00000305941.3	O75445-1
USH2A	ENST00000366942.3 link	c.100C>T	p.Arg34*	stop_gained	2/21	1		ENSP00000355909.3	O75445-2
USH2A	ENST00000674083.1 link	c.100C>T	p.Arg34*	stop_gained	2/73			ENSP00000501296.1	O75445-3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152064

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000799

AC:

AN:

250392

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135312

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1460898

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726688

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:

0.0000144

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152064

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74258

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 26, 2023	This sequence change creates a premature translational stop signal (p.Arg34*) 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 (rs772808534, gnomAD 0.003%). This premature translational stop signal has been observed in individuals with Usher syndrome or retinitis pigmentosa (PMID: 10909849, 15823922, 28041643). ClinVar contains an entry for this variant (Variation ID: 438000). For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Oct 23, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jan 16, 2024	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; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 10909849, 28041643, 32581362, 32467589, 32675063, 36011334, 31964843, 32566994, 36110214, 29953849, 31266775, 37217489, 36819107, 25333064, 32995707, 16098008, 26338283, 35457016, 29912909, 35076463, 31429209, 34906470, 34948090, 22135276, 36460718, 19683999, 35665479, 15823922) -

Retinitis pigmentosa 39

Pathogenic:3

Likely pathogenic, criteria provided, single submitter	research	Ocular Genomics Institute, Massachusetts Eye and Ear	Apr 08, 2021	The USH2A c.100C>T 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: PVS1, PM2. Based on this evidence we have classified this variant as Likely Pathogenic. -
Likely pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Nov 04, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Nov 19, 2023	- -

Usher syndrome type 2A

Pathogenic:2

Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Nov 04, 2023	- -

Usher syndrome

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

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

Nov 28, 2023

Variant summary: USH2A c.100C>T (p.Arg34X) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Variants downstream of this position have been classified as pathogenic by our laboratory. The variant allele was found at a frequency of 8e-06 in 250392 control chromosomes. c.100C>T has been reported in the literature in individuals affected with Usher Syndrome (e.g. Dreyer_2008). To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Six submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. The following publication have been ascertained in the context of this evaluation (PMID: 18273898). All submitters classified the variant as pathogenic/likely pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Counsyl

Mar 01, 2018

- -

Retinitis pigmentosa

Pathogenic:1

Pathogenic, no assertion criteria provided

research

NIHR Bioresource Rare Diseases, University of Cambridge

Jan 01, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.55

BayesDel_noAF

Pathogenic

0.48

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.91

Vest4

0.61

GERP RS

3.2

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