dbSNP rs868562952: USH2A:p.Gln675* (chr1-216251047-G-A) – ACMG Classification: Pathogenic (18 pts)

Variant summary

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

The NM_206933.4(USH2A):c.2023C>T(p.Gln675*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000041 in 1,461,764 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 (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

USH2A
NM_206933.4 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:8

Conservation

PhyloP100: 3.98

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:

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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 1-216251047-G-A is Pathogenic according to our data. Variant chr1-216251047-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 553607.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-216251047-G-A is described in Lovd as [Pathogenic]. Variant chr1-216251047-G-A is described in Lovd as [Pathogenic]. Variant chr1-216251047-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH2A	NM_206933.4 link	c.2023C>T	p.Gln675*	stop_gained	Exon 12 of 72	ENST00000307340.8	NP_996816.3	O75445-1
USH2A	NM_007123.6 link	c.2023C>T	p.Gln675*	stop_gained	Exon 12 of 21		NP_009054.6	O75445-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
USH2A	ENST00000307340.8 link	c.2023C>T	p.Gln675*	stop_gained	Exon 12 of 72	1	NM_206933.4	ENSP00000305941.3	O75445-1
USH2A	ENST00000366942.3 link	c.2023C>T	p.Gln675*	stop_gained	Exon 12 of 21	1		ENSP00000355909.3	O75445-2
USH2A	ENST00000674083.1 link	c.2023C>T	p.Gln675*	stop_gained	Exon 12 of 73			ENSP00000501296.1	O75445-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461764

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727184

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:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Retinitis pigmentosa 39

Pathogenic:3

Nov 04, 2023

Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 21, 2021

Institute of Human Genetics, University of Leipzig Medical Center

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was identified as compound heterozygous with NM_206933.4:c.2797C>T. -

Aug 30, 2023

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39

Pathogenic:2

May 14, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 30, 2017

Counsyl

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:1

May 03, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ClinVar contains an entry for this variant (Variation ID: 553607). This premature translational stop signal has been observed in individual(s) with USH2A-related conditions (PMID: 10909849, 29625443). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Gln675*) 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). For these reasons, this variant has been classified as Pathogenic. -

Retinal dystrophy

Pathogenic:1

Jan 01, 2020

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Usher syndrome type 2A

Pathogenic:1

Nov 04, 2023

Genome-Nilou Lab

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.62

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.81

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.90

Vest4

0.81

GERP RS

4.3

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