11-17494337-G-C

Variant summary

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

The NM_153676.4(USH1C):c.2695C>G(p.Arg899Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000871 in 1,607,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R899H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

USH1C
NM_153676.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0590

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=0.07825881).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
USH1C	NM_153676.4 linkuse as main transcript	c.2695C>G	p.Arg899Gly	missense_variant	27/27	ENST00000005226.12
USH1C	NM_005709.4 linkuse as main transcript	c.*27C>G		3_prime_UTR_variant	21/21	ENST00000318024.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
USH1C	ENST00000005226.12 linkuse as main transcript	c.2695C>G	p.Arg899Gly	missense_variant	27/27	5	NM_153676.4		Q9Y6N9-5
USH1C	ENST00000318024.9 linkuse as main transcript	c.*27C>G		3_prime_UTR_variant	21/21	1	NM_005709.4	P1	Q9Y6N9-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152234

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000893

AC:

AN:

1455328

Hom.:

Cov.:

AF XY:

0.00000691

AC XY:

AN XY:

723108

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000117

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

May 15, 2018

The p.Arg899Gly variant has not been reported in the medical literature, gene specific variation databases, nor has it been previously identified by our laboratory. It is absent from general population databases such as 1000 Genomes, NHLBI GO Exome Sequencing Project (ESP), and the Genome Aggregation Database (gnomAD). The arginine at position 899 is weakly conserved considering 12 species (Alamut v2.11) and computational analyses of the effects of the p.Arg899Gly variant on protein structure and function provide conflicting results (SIFT: damaging, PolyPhen-2: benign). The nucleotide is also weakly conserved, and computational analyses (Alamut v.2.11) predict that this variant may impact splicing by creating a novel cryptic donor splice site at the penultimate codon. Altogether, there is not enough evidence to classify the p.Arg899Gly variant with certainty. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.69

Cadd

Benign

Dann

Benign

0.68

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.067

LIST_S2

Benign

0.26

M_CAP

Benign

0.021

MetaRNN

Benign

0.078

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

0.080

REVEL

Benign

0.043

Sift

Pathogenic

0.0

Vest4

0.15

MutPred

0.31

Loss of MoRF binding (P = 0.0039);

MVP

0.26

MPC

0.078

ClinPred

0.15

GERP RS

1.7

gMVP

0.73

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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