rs397518032

Variant summary

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

The NM_206933.4(USH2A):​c.7844A>G​(p.Gln2615Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 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: 0.0000021 ( 0 hom. )

Consequence

USH2A
NM_206933.4 missense

Scores

19

Clinical Significance

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

Conservation

PhyloP100: 1.56
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]

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=0.11546484).
BP6
Variant 1-215888805-T-C is Benign according to our data. Variant chr1-215888805-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 48587.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
USH2ANM_206933.4 linkc.7844A>G p.Gln2615Arg missense_variant Exon 41 of 72 ENST00000307340.8 NP_996816.3 O75445-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
USH2AENST00000307340.8 linkc.7844A>G p.Gln2615Arg missense_variant Exon 41 of 72 1 NM_206933.4 ENSP00000305941.3 O75445-1
USH2AENST00000674083.1 linkc.7844A>G p.Gln2615Arg missense_variant Exon 41 of 73 ENSP00000501296.1 O75445-3
ENSG00000229242ENST00000414995.1 linkn.60+2164T>C intron_variant Intron 1 of 1 3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000797
AC:
2
AN:
251070
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135668
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:
0.00
Gnomad NFE exome
AF:
0.0000176
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000205
AC:
3
AN:
1461844
Hom.:
0
Cov.:
32
AF XY:
0.00000275
AC XY:
2
AN XY:
727222
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:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39 Uncertain:1
Aug 24, 2017
Counsyl
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Uncertain:1
May 20, 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 2615 of the USH2A protein (p.Gln2615Arg). This variant is present in population databases (rs397518032, gnomAD 0.002%). 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: 48587). 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 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
Sep 25, 2011
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Gln2615Arg in exon 41 of USH2A: This variant is not expected to have clinical si gnificance because computational analyses (PolyPhen2, SIFT, AlignGVGD) do not su ggest a high likelihood of impact to the protein primarily based upon a lack of conservation across species including mammals. Of note, opossum has an arginine at this position despite high nearby amino acid conservation. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.078
BayesDel_addAF
Benign
-0.31
T
BayesDel_noAF
Benign
-0.67
CADD
Benign
9.0
DANN
Benign
0.65
DEOGEN2
Benign
0.044
T
Eigen
Benign
-0.58
Eigen_PC
Benign
-0.53
FATHMM_MKL
Benign
0.70
D
LIST_S2
Benign
0.42
T
M_CAP
Benign
0.064
D
MetaRNN
Benign
0.12
T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
1.6
L
PrimateAI
Benign
0.25
T
PROVEAN
Benign
-0.82
N
REVEL
Benign
0.079
Sift
Benign
0.59
T
Sift4G
Benign
0.65
T
Polyphen
0.0
B
Vest4
0.16
MutPred
0.24
Gain of glycosylation at S2614 (P = 0.0895);
MVP
0.86
MPC
0.031
ClinPred
0.051
T
GERP RS
3.5
Varity_R
0.041
gMVP
0.38

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.

Other links and lift over

dbSNP: rs397518032; hg19: chr1-216062147; API