NM_206933.4:c.9921T>G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM3PM2_Supporting

This summary comes from the ClinGen Evidence Repository: The variant NM_206933.4:c.9921T>G in USH2A is a missense variant predicted to cause substitution of cysteine by tryptophan at amino acid 3307 (p.Cys3307Trp). The variant is absent from gnomAD v2.1.1 (PM2_Supporting). The REVEL computational prediction analysis tool produced a score of 0.585, which meets no codes. The variant has been reported in three compound heterozygous probands, two who were diagnosed with retinitis pigmentosa, and all with a likely pathogenic/pathogenic second USH2A variant in phase unknown (PM3; PMIDs: 32531858, 34906470, 36819107). In summary, this variant meets the criteria to be classified as uncertain significance for AR Usher syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP: PM2_Supporting, PM3. (ClinGen Hearing Loss VCEP specifications version 2; 2/21/2024). LINK:https://erepo.genome.network/evrepo/ui/classification/CA16044155/MONDO:0019501/005

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

USH2A
NM_206933.4 missense

Scores

Clinical Significance

Uncertain significance reviewed by expert panel P:5U:6

Conservation

PhyloP100: 0.139

Publications

3 publications found

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]

USH2A Gene-Disease associations (from GenCC):

Usher syndrome type 2A
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
Usher syndrome type 2
Inheritance: Unknown, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
retinitis pigmentosa 39
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

USH2A links:

Genome browser will be placed here

ACMG classification

Specifications for USH2A are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

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

PM2

For more information check the summary or visit ClinGen Evidence Repository.

PM3

For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_206933.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	USH2A	NM_206933.4	MANE Select	c.9921T>G	p.Cys3307Trp	missense	Exon 50 of 72	NP_996816.3	O75445-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	USH2A	ENST00000307340.8	TSL:1 MANE Select	c.9921T>G	p.Cys3307Trp	missense	Exon 50 of 72	ENSP00000305941.3	O75445-1
	USH2A	ENST00000674083.1		c.9921T>G	p.Cys3307Trp	missense	Exon 50 of 73	ENSP00000501296.1	O75445-3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152130

Hom.:

Cov.:

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000198

AC:

AN:

1461756

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727174

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33468

American (AMR)

AF:

0.0000224

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000252

AC:

AN:

1111932

Other (OTH)

AF:

0.00

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000197

AC:

AN:

152130

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74312

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41424

American (AMR)

AF:

0.00

AC:

AN:

15266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68028

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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.:

Bravo

AF:

0.0000113

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Usher syndrome type 2A;C3151138:Retinitis pigmentosa 39 (2)

Monogenic hearing loss (1)

Retinitis pigmentosa (1)

Retinitis pigmentosa 39 (1)

USH2A-related disorder (1)

Usher syndrome (1)

Usher syndrome type 1 (1)

Usher syndrome type 2A (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.92

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.15

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.52

Eigen

Benign

-0.093

Eigen_PC

Benign

-0.26

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.78

M_CAP

Pathogenic

0.85

MetaRNN

Pathogenic

0.97

MetaSVM

Benign

-0.34

MutationAssessor

Uncertain

2.8

PhyloP100

0.14

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-8.3

REVEL

Uncertain

0.58

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.92

MVP

0.82

MPC

0.26

ClinPred

1.0

GERP RS

-4.1

Varity_R

0.94

gMVP

0.96

Mutation Taster

=10/90

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over