NM_153676.4:c.2240A>G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_153676.4(USH1C):c.2240A>G(p.Gln747Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000013 in 1,612,836 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

USH1C
NM_153676.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 4.62

Variant links:

Genes affected

USH1C (HGNC:12597): (USH1 protein network component harmonin) This gene encodes a scaffold protein that functions in the assembly of Usher protein complexes. The protein contains PDZ domains, a coiled-coil region with a bipartite nuclear localization signal and a PEST degradation sequence. Defects in this gene are the cause of Usher syndrome type 1C and non-syndromic sensorineural deafness autosomal recessive type 18. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

USH1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2234936).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH1C	NM_153676.4 link	c.2240A>G	p.Gln747Arg	missense_variant	Exon 22 of 27	ENST00000005226.12	NP_710142.1	Q9Y6N9-5
USH1C	NM_005709.4 link	c.1340A>G	p.Gln447Arg	missense_variant	Exon 17 of 21	ENST00000318024.9	NP_005700.2	Q9Y6N9-1A0A0S2Z4U9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
USH1C	ENST00000005226.12 link	c.2240A>G	p.Gln747Arg	missense_variant	Exon 22 of 27	5	NM_153676.4	ENSP00000005226.7		Q9Y6N9-5
USH1C	ENST00000318024.9 link	c.1340A>G	p.Gln447Arg	missense_variant	Exon 17 of 21	1	NM_005709.4	ENSP00000317018.4		Q9Y6N9-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000290

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248536

Hom.:

AF XY:

0.00000744

AC XY:

AN XY:

134364

show subpopulations

Gnomad AFR exome

AF:

0.0000634

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1460554

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

726406

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Jun 27, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 447 of the USH1C protein (p.Gln447Arg). This variant is present in population databases (rs201600193, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with USH1C-related conditions. ClinVar contains an entry for this variant (Variation ID: 178564). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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. -

Mar 05, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Jul 26, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Gln747Arg variant in USH1C has not been identified in individuals with heari ng loss, but has been identified in 0.02% (1/4400) of African American chromosom es from a broad population by the NHLBI Exome Sequencing Project (http://evs.gs. washington.edu/EVS/; dbSNP rs201600193). Although this variant has been seen in the general population, its frequency is not high enough to rule out a pathogeni c role. Computational analyses (biochemical amino acid properties, conservation, AlignGVGD, PolyPhen2, and SIFT) do not provide strong support for or against an impact to the protein. It should be noted that this variant occurs in exon 20 o f USH1C that is expressed in the ear and not the eye and therefore would likely only be relevant to nonsyndromic hearing loss, not Usher syndrome. In summary, a dditional data is needed to determine the clinical significance of this variant. -

Usher syndrome type 1C;C1865870:Autosomal recessive nonsyndromic hearing loss 18A

Uncertain:1

Aug 01, 2017

Counsyl

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Usher syndrome type 1C

Uncertain:1

Sep 16, 2020

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Uncertain

0.073

BayesDel_noAF

Uncertain

0.050

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.;.;.

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

D;D;D;D

M_CAP

Benign

0.018

MetaRNN

Benign

0.22

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.3

L;.;.;.

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.6

N;N;N;N

REVEL

Benign

0.24

Sift

Uncertain

0.0020

D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D

Polyphen

0.083

B;.;D;.

Vest4

0.57

MVP

0.33

MPC

0.39

ClinPred

0.78

GERP RS

5.6

Varity_R

0.76

gMVP

0.55

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over