rs1553299079

Variant names:

• chr1-216078262-C-A
• NM_206933.4:c.5399G>T

Your query was ambiguous. Multiple possible variants found:

• chr1-216078262-C-A
• chr1-216078262-C-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Moderate

The NM_206933.4(USH2A):​c.5399G>T​(p.Trp1800Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W1800R) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: USH2A NM_206933.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.12

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-AS2 (HGNC:40605): (USH2A antisense RNA 2)

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PM1: In a domain Laminin G-like 2 (size 177) in uniprot entity USH2A_HUMAN there are 76 pathogenic changes around while only 8 benign (90%) in NM_206933.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-216078263-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 2883986.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.988
• PP5: Variant 1-216078262-C-A is Pathogenic according to our data. Variant chr1-216078262-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2831172.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH2A	NM_206933.4	c.5399G>T	p.Trp1800Leu	missense_variant	Exon 27 of 72	ENST00000307340.8	NP_996816.3
USH2A-AS2	NR_125992.1	n.137-811C>A		intron_variant	Intron 1 of 2
USH2A-AS2	NR_125993.1	n.136+5662C>A		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8	c.5399G>T	p.Trp1800Leu	missense_variant	Exon 27 of 72	1	NM_206933.4	ENSP00000305941.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Jan 22, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces tryptophan, which is neutral and slightly polar, with leucine, which is neutral and non-polar, at codon 1800 of the USH2A protein (p.Trp1800Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with USH2A-related conditions. 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 expected to disrupt USH2A protein function. This variant disrupts the p.Trp1800 amino acid residue in USH2A. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 29625443, 30948794; Invitae). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.60	D
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.83	T
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Uncertain	0.78	D
MutationAssessor	Pathogenic	3.2	M
PrimateAI	Uncertain	0.59	T
PROVEAN	Pathogenic	-8.9	D
REVEL	Pathogenic	0.69
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.87
MutPred		0.88		Loss of MoRF binding (P = 0.0547);
MVP		0.93
MPC		0.29
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.85
gMVP		0.88

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-216251604;