rs587783023

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM1

The NM_206933.4(USH2A):​c.2414G>C​(p.Gly805Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000471 in 1,613,880 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. G805G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

USH2A
NM_206933.4 missense

Scores

2
9
8

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:10

Conservation

PhyloP100: 3.70
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 was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1
In a disulfide_bond (size 18) in uniprot entity USH2A_HUMAN there are 5 pathogenic changes around while only 1 benign (83%) in NM_206933.4

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
USH2ANM_206933.4 linkc.2414G>C p.Gly805Ala missense_variant Exon 13 of 72 ENST00000307340.8 NP_996816.3 O75445-1
USH2ANM_007123.6 linkc.2414G>C p.Gly805Ala missense_variant Exon 13 of 21 NP_009054.6 O75445-2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
USH2AENST00000307340.8 linkc.2414G>C p.Gly805Ala missense_variant Exon 13 of 72 1 NM_206933.4 ENSP00000305941.3 O75445-1
USH2AENST00000366942.3 linkc.2414G>C p.Gly805Ala missense_variant Exon 13 of 21 1 ENSP00000355909.3 O75445-2
USH2AENST00000674083.1 linkc.2414G>C p.Gly805Ala missense_variant Exon 13 of 73 ENSP00000501296.1 O75445-3

Frequencies

GnomAD3 genomes
AF:
0.0000263
AC:
4
AN:
152098
Hom.:
0
Cov.:
32
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:
0.000772
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
GnomAD2 exomes
AF:
0.0000917
AC:
23
AN:
250734
AF XY:
0.0000959
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00125
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000493
AC:
72
AN:
1461782
Hom.:
0
Cov.:
31
AF XY:
0.0000468
AC XY:
34
AN XY:
727188
show subpopulations
Gnomad4 AFR exome
AF:
0.00
AC:
0
AN:
33480
Gnomad4 AMR exome
AF:
0.00
AC:
0
AN:
44716
Gnomad4 ASJ exome
AF:
0.00
AC:
0
AN:
26130
Gnomad4 EAS exome
AF:
0.00171
AC:
68
AN:
39668
Gnomad4 SAS exome
AF:
0.00
AC:
0
AN:
86258
Gnomad4 FIN exome
AF:
0.00
AC:
0
AN:
53412
Gnomad4 NFE exome
AF:
0.00
AC:
0
AN:
1111958
Gnomad4 Remaining exome
AF:
0.0000662
AC:
4
AN:
60392
Heterozygous variant carriers
0
6
12
18
24
30
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000263
AC:
4
AN:
152098
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74292
show subpopulations
Gnomad4 AFR
AF:
0.00
AC:
0
AN:
0
Gnomad4 AMR
AF:
0.00
AC:
0
AN:
0
Gnomad4 ASJ
AF:
0.00
AC:
0
AN:
0
Gnomad4 EAS
AF:
0.000772
AC:
0.000771605
AN:
0.000771605
Gnomad4 SAS
AF:
0.00
AC:
0
AN:
0
Gnomad4 FIN
AF:
0.00
AC:
0
AN:
0
Gnomad4 NFE
AF:
0.00
AC:
0
AN:
0
Gnomad4 OTH
AF:
0.00
AC:
0
AN:
0
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000302
ExAC
AF:
0.0000741
AC:
9
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:10
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39 Uncertain:2
Feb 09, 2017
Counsyl
Significance:Uncertain significance
Review Status:no assertion criteria provided
Collection Method:clinical testing

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Oct 31, 2018
Fulgent Genetics, Fulgent Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Uncertain:2
Sep 27, 2024
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 27057829, 33691693, 25445212) -

Feb 27, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 805 of the USH2A protein (p.Gly805Ala). This variant is present in population databases (rs587783023, gnomAD 0.1%). This missense change has been observed in individual(s) with USH2A-related conditions (PMID: 25445212, 27057829, 33691693). ClinVar contains an entry for this variant (Variation ID: 156393). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. 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. -

Usher syndrome type 2A Uncertain:2
Nov 04, 2023
Genome-Nilou Lab
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Leber congenital amaurosis Uncertain:1
Sep 18, 2014
Molecular Diagnostics Laboratory, Seoul National University Hospital
Significance:Uncertain significance
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Retinitis pigmentosa 39 Uncertain:1
Nov 04, 2023
Genome-Nilou Lab
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Retinal dystrophy Uncertain:1
Oct 01, 2023
Dept Of Ophthalmology, Nagoya University
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:research

- -

Retinitis pigmentosa Uncertain:1
Apr 27, 2017
Illumina Laboratory Services, Illumina
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.17
BayesDel_addAF
Benign
-0.080
T
BayesDel_noAF
Uncertain
0.070
CADD
Benign
21
DANN
Uncertain
1.0
DEOGEN2
Benign
0.17
T;.
Eigen
Uncertain
0.68
Eigen_PC
Uncertain
0.62
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Benign
0.71
T;T
M_CAP
Benign
0.025
T
MetaRNN
Uncertain
0.51
D;D
MetaSVM
Benign
-0.32
T
MutationAssessor
Uncertain
2.5
M;M
PrimateAI
Benign
0.41
T
PROVEAN
Uncertain
-4.1
D;D
REVEL
Uncertain
0.36
Sift
Pathogenic
0.0
D;D
Sift4G
Uncertain
0.016
D;T
Polyphen
1.0
D;D
Vest4
0.74
MutPred
0.49
Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);
MVP
0.96
MPC
0.24
ClinPred
0.43
T
GERP RS
5.7
Varity_R
0.58
gMVP
0.77
Mutation Taster
=11/89
disease causing

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: rs587783023; hg19: chr1-216420322; COSMIC: COSV56422237; API