rs201527662

Variant names:

• chr1-216246592-A-C
• rs201527662
• NM_206933.4:c.2802T>G

Your query was ambiguous. Multiple possible variants found:

• chr1-216246592-A-C
• chr1-216246592-A-T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM5 PP5

The NM_206933.4(USH2A):​c.2802T>G​(p.Cys934Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000905 in 1,614,032 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C934R) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: 𝑓 0.00012 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000087 (0 hom.)
• Consequence: USH2A NM_206933.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:24 U:3
• Conservation: PhyloP100: 1.35
• Publications: 58 publications found

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 Gene-Disease associations (from GenCC):

• Usher syndrome type 2

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Usher syndrome type 2A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa 39

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-216246594-A-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 856761.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP5: Variant 1-216246592-A-C is Pathogenic according to our data. Variant chr1-216246592-A-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 143179.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH2A	NM_206933.4	c.2802T>G	p.Cys934Trp	missense_variant	Exon 13 of 72	ENST00000307340.8	NP_996816.3
USH2A	NM_007123.6	c.2802T>G	p.Cys934Trp	missense_variant	Exon 13 of 21		NP_009054.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8	c.2802T>G	p.Cys934Trp	missense_variant	Exon 13 of 72	1	NM_206933.4	ENSP00000305941.3
USH2A	ENST00000366942.3	c.2802T>G	p.Cys934Trp	missense_variant	Exon 13 of 21	1		ENSP00000355909.3
USH2A	ENST00000674083.1	c.2802T>G	p.Cys934Trp	missense_variant	Exon 13 of 73			ENSP00000501296.1

Frequencies

GnomAD3 genomes AF: 0.000118 AC: 18 AN: 152180 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00327

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: 0.000211 AC: 53 AN: 251078 AF XY: 0.000206

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.000497

Gnomad EAS exome AF: 0.00250

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000869 AC: 127 AN: 1461736 Hom.: 0 Cov.: 31 AF XY: 0.0000976 AC XY: 71 AN XY: 727174

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.000383 AC: 10 AN: 26134

East Asian (EAS) AF: 0.00244 AC: 97 AN: 39680

South Asian (SAS) AF: 0.0000580 AC: 5 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000450 AC: 5 AN: 1111894

Other (OTH) AF: 0.000166 AC: 10 AN: 60392

GnomAD4 genome AF: 0.000125 AC: 19 AN: 152296 Hom.: 0 Cov.: 32 AF XY: 0.000175 AC XY: 13 AN XY: 74472

African (AFR) AF: 0.00 AC: 0 AN: 41574

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.000288 AC: 1 AN: 3470

East Asian (EAS) AF: 0.00347 AC: 18 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.000218 Hom.: 1

Bravo AF: 0.000144

ExAC AF: 0.000214 AC: 26

Asia WGS AF: 0.00115 AC: 4 AN: 3476

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:24 Uncertain:3

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Retinitis pigmentosa 39 Pathogenic:6 Uncertain:1

Jan 13, 2017

Counsyl

Significance: Likely pathogenic

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. -

Feb 05, 2025

SingHealth Duke-NUS Institute of Precision Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant is located in a mutational hotspot where >50% of variants are pathogenic (PM1). Homozygous allele count in gnomAD exomes and genomes are less than 0 (PM2). Other variant at this amino acid residue have been classified as pathogenic/likely pathogenic (PM5, p.Cys934Arg) . REVEL score is 0.849 (PP3_mod). Variant is observed to be in trans with a different pathogenic variant (PM3). -

Jul 22, 2021

Genome-Nilou Lab

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 08, 2023

3billion

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.020%). Predicted Consequence/Location: The majority of the known disease-causing variants of this gene are variants expected to result in premature termination of the protein. Premature termination of the protein is a common disease-causing mechanism for this gene. In silico tool predictions suggest damaging effect of the variant on gene or gene product [REVEL: 0.85 (>=0.6, sensitivity 0.68 and specificity 0.92); 3Cnet: 0.92 (>=0.6, sensitivity 0.72 and precision 0.9)]. Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000143179 /PMID: 21686329 /3billion dataset). The variant has been reported to be in trans with a pathogenic variant as either compound heterozygous or homozygous in at least 2 similarly affected unrelated individuals (PMID: 26338283, 27160483). A different missense change at the same codon (p.Cys934Arg) has been reported to be associated with USH2A related disorder (ClinVar ID: VCV000856761). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline. -

Mar 27, 2024

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 18, 2021

Pangenia Genomics, Pangenia Inc.

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

The USH2A, c.2802T>G (p.Cys934Trp) variant is at extremely low frequency in population database; allele frequency in East Asia population is 0. 0025 by gnomAD v2.1.1. This variant is detected in trans with a pathogenic variant [USH2A, c.9570+1G>A] . This variant has been previously reported to be detected in numerous patients affected by retinitis pigmentosa or Usher syndrome as homozygote [PMID: 26338283], or in combination with another null variant in USH2A gene [PMID: 24938718, 25649381, 30948794, 33105608, 26338283], including frameshift and canonical splice sites variants (c.8368delT, c.8730dupT, c.9570+1G>A, c.99_100insT, c.5858-1G>A, c.5158delC, c.11811_11812delCT, c.12409delA, c.710delT). In at least 3 patients, the other null variant was confirmed to be in trans with this variant [PMID: 24938718, 30948794]. Multiple lines of computational evidence support a deleterious effect on the gene or gene product, REVEL = 0.849. This variant has been reported to co-segregate with retinitis pigmentosa or Usher syndrome in several families [PMID: 24938718, 26310143, 21686329].There are multiple submissions of this variant in ClinVar (Variation ID: 143179). -

Apr 17, 2023

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Usher syndrome type 2A Pathogenic:6 Uncertain:1

Jul 22, 2021

Genome-Nilou Lab

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 20, 2019

Myriad Genetics, Inc.

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

NM_206933.2(USH2A):c.2802T>G(C934W) is classified as likely pathogenic in the context of USH2A-related disorders. Sources cited for classification include the following: PMID 24938718, 25324289, 26310143, 27460420 and 26338283. Classification of NM_206933.2(USH2A):c.2802T>G(C934W) is based on the following criteria: This variant has been observed more frequently in patients with clinical diagnoses than in healthy populations. Please note: this variant was assessed in the context of healthy population screening. -

Sep 16, 2020

Natera, Inc.

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

May 28, 2019

Mendelics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Neuberg Centre For Genomic Medicine, NCGM

Significance: Uncertain significance

Review Status: flagged submission

Collection Method: clinical testing

The missense variant p.C934W in USH2A (NM_206933.4) has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The p.C934W variant is observed in 46/18,376 (0.2503%) alleles from individuals of East Asian background in gnomAD Exomes and in 4/1,008 (0.3968%) alleles from individuals of East Asian background in 1000 Genomes. This variant was found in ClinVar (Variant 143179) with a classification of Conflicting Interpretations Of Pathogenicity and a review status of (1 star) criteria provided, conflicting interpretations. There is a large physicochemical difference between cysteine and tryptophan, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. For these reasons, this variant has been classified as Uncertain Significance. A different heterozygous variant in the USH2A gene has been detected in the spouse -

-

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 06, 2021

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with retinitis pigmentosa 39 (MIM#6138093) and type 2A Usher syndrome (MIM#276901). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from cysteine to tryptophan. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD <0.01 for a recessive condition (v2: 57 heterozygotes, 0 homozygotes). (SP) 0309 - An alternative amino acid change at the same position has been observed in gnomAD (v2: 2 heterozygotes, 0 homozygotes). (I) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0600 - Variant is located in the annotated laminin EGF domain (Decipher). (I) 0801 - This variant has strong previous evidence of pathogenicity in multiple unrelated individuals with retinitis pigmentosa and Usher syndrome (ClinVar, PMID: 32893482). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

not provided Pathogenic:4

Jan 19, 2017

Eurofins Ntd Llc (ga)

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 31, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces cysteine, which is neutral and slightly polar, with tryptophan, which is neutral and slightly polar, at codon 934 of the USH2A protein (p.Cys934Trp). This variant is present in population databases (rs201527662, gnomAD 0.2%). This missense change has been observed in individual(s) with Usher syndrome (PMID: 25356976, 26338283, 27160483, 27460420, 29625443, 29899460, 30948794). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 143179). 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 expected to disrupt USH2A protein function with a positive predictive value of 95%. For these reasons, this variant has been classified as Pathogenic. -

Jul 21, 2025

GeneDx

Significance: Pathogenic

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: 26992781, 29899460, 34416374, 33629268, 32531858, 31904091, 31045651, 31054281, 25262649, 25356976, 25474345, 26310143, 21686329, 24938718, 25324289, 27460420, 25649381, 25078356, 26338283, 28041643, 28704127, 29625443, 30487145, 29074561, 32100970, 31960602, 31213501, 32188678, 31872526, 30948794, 31456290, 32203226, 30896630, 32581362, 32893482, 33090715, 33105608, 34426522, 33124170, 32675063, 33608557, 31964843, 36464167, 36110214, 37981655, 33749171, 33781268, 33946315, 33691693, 32037395, 35314707, 34721897, 35266249, 35052368, 36597107, 36729443, 36819107, 38167091, 38841332, 34599366, 38219857) -

Dec 01, 2017

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Retinal dystrophy Pathogenic:3

Jul 16, 2019

Blueprint Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 01, 2023

Dept Of Ophthalmology, Nagoya University

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

- -

Jan 01, 2017

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39 Pathogenic:2

Feb 26, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Juno Genomics, Hangzhou Juno Genomics, Inc

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PM3_VeryStrong+PP1_Strong+PP3+BS1_Supporting -

Retinitis pigmentosa Pathogenic:1 Uncertain:1

Jan 01, 2015

NIHR Bioresource Rare Diseases, University of Cambridge

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: research

- -

-

Department of Ophthalmology and Visual Sciences Kyoto University

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Usher syndrome type 2 Pathogenic:1

Jun 23, 2019

Sharon lab, Hadassah-Hebrew University Medical Center

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Usher syndrome Pathogenic:1

Nov 21, 2022

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: USH2A c.2802T>G (p.Cys934Trp) results in a non-conservative amino acid change located in the Laminin-type EGF domain (IPR002049) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00021 in 251078 control chromosomes (gnomAD). This frequency is not significantly higher than expected for a pathogenic variant in USH2A causing Usher Syndrome (0.00021 vs 0.011), allowing no conclusion about variant significance. c.2802T>G has been reported in the literature as a biallelic genotype in multiple individuals affected with retinitis pigmentosa and Usher syndrome (e.g. Oishi_2014, Zheng_2015, Koyanagi_2019). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Fifteen ClinVar submitters have assessed the variant since 2014: three classified the variant as uncertain significance, five classified the variant as likely pathogenic, and seven classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.79
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Pathogenic	0.46
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.43	T;.
Eigen	Uncertain	0.66
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Pathogenic	0.77	D
MetaRNN	Uncertain	0.73	D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Pathogenic	4.3	H;H
PhyloP100		1.4
PrimateAI	Uncertain	0.70	T
PROVEAN	Pathogenic	-9.1	D;D
REVEL	Pathogenic	0.85
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.96
MVP		0.93
MPC		0.26
ClinPred		0.99	D
GERP RS		3.7
Varity_R		0.99
gMVP		0.96
Mutation Taster		=1/99	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs201527662; hg19: chr1-216419934; COSMIC: COSV56376697;