dbSNP rs397517987: USH2A:p.Gln4676Arg (chr1-215671078-T-C) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_206933.4(USH2A):c.14027A>G(p.Gln4676Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

USH2A
NM_206933.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.937

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_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15547645).

BP6

Variant 1-215671078-T-C is Benign according to our data. Variant chr1-215671078-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 48425.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH2A	NM_206933.4 link	c.14027A>G	p.Gln4676Arg	missense_variant	Exon 64 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.14027A>G	p.Gln4676Arg	missense_variant	Exon 64 of 72	1	NM_206933.4	ENSP00000305941.3		O75445-1
USH2A	ENST00000674083.1 link	c.14027A>G	p.Gln4676Arg	missense_variant	Exon 64 of 73			ENSP00000501296.1		O75445-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251318

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135830

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.00000547

AC:

AN:

1461860

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000450

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Amblyopia;C0431399:Familial aplasia of the vermis;C0454644:Delayed speech and language development;C1842688:Hypoplasia of the brainstem;C1854301:Motor delay;C1865866:Congenital sensorineural hearing impairment;C4022154:Cerebellar hemisphere hypoplasia;C5231391:Congenital cerebellar hypoplasia

Uncertain:1

Jan 01, 2017

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Dec 02, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 4676 of the USH2A protein (p.Gln4676Arg). This variant is present in population databases (rs397517987, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with USH2A-related conditions. ClinVar contains an entry for this variant (Variation ID: 48425). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt USH2A protein function with a negative predictive value of 95%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

May 15, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Gln4676Arg variant (USH2A) has not been reported in the literature nor previ ously identified by our laboratory. However, computational analyses (biochemical amino acid properties, homology, PolyPhen2, SIFT, AlignGVGD) do not suggest a h igh likelihood of impact to the protein. Of note, chicken and frogs have Arginin e (Arg) at this position. In summary, the lack of conservation suggests that thi s variant is likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Benign

0.041

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.42

FATHMM_MKL

Benign

0.090

LIST_S2

Benign

0.57

M_CAP

Uncertain

0.28

MetaRNN

Benign

0.16

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.65

REVEL

Benign

0.13

Sift

Benign

0.34

Sift4G

Benign

0.27

Polyphen

0.012

Vest4

0.21

MutPred

0.55

Gain of MoRF binding (P = 0.0233);

MVP

0.83

MPC

0.034

ClinPred

0.077

GERP RS

5.1

Varity_R

0.080

gMVP

0.44

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