chr17-74920121-T-G

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_173477.5(USH1G):c.715A>C(p.Lys239Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00017 in 1,603,092 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 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. K239N) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00091 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000092 ( 0 hom. )

Consequence

USH1G
NM_173477.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 7.95

Publications

3 publications found

Variant links:

Genes affected

USH1G (HGNC:16356): (USH1 protein network component sans) This gene encodes a protein that contains three ankyrin domains, a class I PDZ-binding motif and a sterile alpha motif. The encoded protein interacts with harmonin, which is associated with Usher syndrome type 1C. This protein plays a role in the development and maintenance of the auditory and visual systems and functions in the cohesion of hair bundles formed by inner ear sensory cells. Mutations in this gene are associated with Usher syndrome type 1G (USH1G). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

USH1G Gene-Disease associations (from GenCC):

Usher syndrome type 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Usher syndrome type 1G
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
nonsyndromic genetic hearing loss
Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

USH1G links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.026664943).

BP6

Variant 17-74920121-T-G is Benign according to our data. Variant chr17-74920121-T-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 195427.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000912 (139/152352) while in subpopulation AFR AF = 0.00327 (136/41584). AF 95% confidence interval is 0.00282. There are 0 homozygotes in GnomAd4. There are 72 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
USH1G	NM_173477.5 link	c.715A>C	p.Lys239Gln	missense_variant	Exon 2 of 3	ENST00000614341.5	NP_775748.2
USH1G	NM_001282489.3 link	c.406A>C	p.Lys136Gln	missense_variant	Exon 2 of 3		NP_001269418.1
USH1G	XM_011524296.2 link	c.406A>C	p.Lys136Gln	missense_variant	Exon 2 of 3		XP_011522598.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
USH1G	ENST00000614341.5 link	c.715A>C	p.Lys239Gln	missense_variant	Exon 2 of 3	1	NM_173477.5	ENSP00000480279.1
USH1G	ENST00000579243.1 link	n.*314A>C		non_coding_transcript_exon_variant	Exon 2 of 3	2		ENSP00000462568.1
USH1G	ENST00000579243.1 link	n.*314A>C		3_prime_UTR_variant	Exon 2 of 3	2		ENSP00000462568.1

Frequencies

GnomAD3 genomes

AF:

0.000913

AC:

139

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00328

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000249

AC:

AN:

240552

AF XY:

0.000175

show subpopulations

Gnomad AFR exome

AF:

0.00339

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000917

AC:

133

AN:

1450740

Hom.:

Cov.:

AF XY:

0.0000692

AC XY:

AN XY:

722236

show subpopulations

African (AFR)

AF:

0.00308

AC:

103

AN:

33458

American (AMR)

AF:

0.000201

AC:

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42780

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111716

Other (OTH)

AF:

0.000282

AC:

AN:

60308

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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:

0.000912

AC:

139

AN:

152352

Hom.:

Cov.:

AF XY:

0.000966

AC XY:

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.00327

AC:

136

AN:

41584

American (AMR)

AF:

0.000131

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

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:

0.000321

Hom.:

Bravo

AF:

0.000926

ESP6500AA

AF:

0.00319

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000305

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Jan 30, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Sep 15, 2014

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Dec 10, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

Jul 20, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Lys239Gln in exon 2 of USH1G: This variant is not expected to have clinical si gnificance because it has been identified in 0.3% (81/23730) of African chromoso mes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org ; dbSNP rs147967199).

USH1G-related disorder

Benign:1

Jun 10, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.25

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.44

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.070

MetaRNN

Benign

0.027

MetaSVM

Uncertain

-0.22

MutationAssessor

Uncertain

2.2

PhyloP100

7.9

PrimateAI

Uncertain

0.65

Sift4G

Uncertain

0.034

Vest4

0.67

ClinPred

0.077

GERP RS

3.7

Varity_R

0.33

gMVP

0.78

Mutation Taster

=79/21

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over