rs397518034
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Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_206933.4(USH2A):c.8120G>A(p.Gly2707Glu) variant causes a missense change. The variant allele was found at a frequency of 0.0000062 in 1,614,018 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 Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000055 ( 0 hom. )
Consequence
USH2A
NM_206933.4 missense
NM_206933.4 missense
Scores
6
9
4
Clinical Significance
Conservation
PhyloP100: 4.20
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]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.973
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
USH2A | NM_206933.4 | c.8120G>A | p.Gly2707Glu | missense_variant | 41/72 | ENST00000307340.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
USH2A | ENST00000307340.8 | c.8120G>A | p.Gly2707Glu | missense_variant | 41/72 | 1 | NM_206933.4 | P1 | |
ENST00000414995.1 | n.60+1888C>T | intron_variant, non_coding_transcript_variant | 3 | ||||||
USH2A | ENST00000674083.1 | c.8120G>A | p.Gly2707Glu | missense_variant | 41/73 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152192Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000120 AC: 3AN: 251012Hom.: 0 AF XY: 0.00000737 AC XY: 1AN XY: 135634
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GnomAD4 exome AF: 0.00000547 AC: 8AN: 1461826Hom.: 0 Cov.: 32 AF XY: 0.00000413 AC XY: 3AN XY: 727214
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GnomAD4 genome ? AF: 0.0000131 AC: 2AN: 152192Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74354
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Usher syndrome type 2A Uncertain:2
Uncertain significance, no assertion criteria provided | clinical testing | Natera, Inc. | Sep 16, 2020 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 04, 2023 | - - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Sep 02, 2010 | Variant classified as Uncertain Significance - Favor Benign. The Gly2707Glu vari ant in USH2A has not been reported in the literature. We have identified it in o ne Hispanic patient without a variant on the second USH2A allele and who also ha d a single pathogenic GJB2 mutation. The Gly270 residue is conserved across spec ies and computational analyses (PolyPhen, SIFT, AlignGVGD) suggest that the Gly2 707Glu variant may impact the protein. However, this information is not predicti ve enough to assume pathogenicity. In summary, the clinical significance of this variant cannot be determined with certainty at this time. - |
Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Counsyl | Apr 04, 2017 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | May 25, 2022 | This sequence change replaces glycine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 2707 of the USH2A protein (p.Gly2707Glu). This variant is present in population databases (rs397518034, 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: 48593). 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. - |
Retinitis pigmentosa 39 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Nov 04, 2023 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Benign
DANN
Uncertain
DEOGEN2
Uncertain
D
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
M
MutationTaster
Benign
D;D
PrimateAI
Benign
T
PROVEAN
Uncertain
D
REVEL
Pathogenic
Sift
Uncertain
D
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MutPred
Loss of MoRF binding (P = 0.0682);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at