17-74923031-C-G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The ENST00000580223(OTOP2):c.-234C>G variant causes a 5 prime UTR premature start codon gain change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000821 in 1,583,794 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 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000077 ( 0 hom. )

Consequence

OTOP2
ENST00000580223 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 7.90

Variant links:

Genes affected

OTOP2 (HGNC:19657): (otopetrin 2) Predicted to enable proton channel activity. Predicted to be involved in proton transmembrane transport. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

OTOP2 links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26491272).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
USH1G	NM_173477.5 link	c.43G>C	p.Glu15Gln	missense_variant	Exon 1 of 3	ENST00000614341.5	NP_775748.2
USH1G	NM_001282489.3 link	c.-214G>C		5_prime_UTR_variant	Exon 1 of 3		NP_001269418.1	Q495M9B4DL95
USH1G	XM_011524296.2 link	c.-601G>C		upstream_gene_variant			XP_011522598.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
OTOP2	ENST00000580223 link	c.-234C>G		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 5	1		ENSP00000463837.2	A0A6E1ZAN8
USH1G	ENST00000614341.5 link	c.43G>C	p.Glu15Gln	missense_variant	Exon 1 of 3	1	NM_173477.5	ENSP00000480279.1	Q495M9
OTOP2	ENST00000580223 link	c.-234C>G		5_prime_UTR_variant	Exon 1 of 5	1		ENSP00000463837.2	A0A6E1ZAN8
USH1G	ENST00000579243.1 link	n.43G>C		non_coding_transcript_exon_variant	Exon 1 of 3	2		ENSP00000462568.1	J3KSN5

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152156

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000477

AC:

AN:

209850

Hom.:

AF XY:

0.00000885

AC XY:

AN XY:

113048

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.0000109

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000768

AC:

AN:

1431638

Hom.:

Cov.:

AF XY:

0.00000565

AC XY:

AN XY:

708348

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:

0.0000100

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74334

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.00000833

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 05, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Glu15Gln variant in USH1G has not been previously reported in individuals with hearing loss. This variant has been identified in 1/16714 European chromos omes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org). Although this variant has been seen in the general population, its frequency is not high enough to rule out a pathogenic role. Computational prediction tools a nd conservation analyses do not provide strong support for or against an impact to the protein. In summary, the clinical significance of the p.Glu15Gln variant is uncertain. -

USH1G-related disorder

Uncertain:1

Dec 24, 2023

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The USH1G c.43G>C variant is predicted to result in the amino acid substitution p.Glu15Gln. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0019% of alleles in individuals of European (Non-Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Uncertain:1

Sep 19, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamic acid with glutamine at codon 15 of the USH1G protein (p.Glu15Gln). The glutamic acid residue is moderately conserved and there is a small physicochemical difference between glutamic acid and glutamine. This variant is present in population databases (rs757653096, ExAC 0.006%). This variant has not been reported in the literature in individuals with USH1G-related conditions. ClinVar contains an entry for this variant (Variation ID: 229608). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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. -

Retinal dystrophy

Uncertain:1

Jan 01, 2022

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

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

0.15

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.42

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.12

Eigen

Benign

0.088

Eigen_PC

Benign

0.21

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.97

M_CAP

Benign

0.0087

MetaRNN

Benign

0.26

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.1

PrimateAI

Uncertain

0.63

Sift4G

Uncertain

0.027

Polyphen

0.26

Vest4

0.22

MutPred

0.43

Gain of MoRF binding (P = 0.0231);

MVP

0.34

ClinPred

0.88

GERP RS

4.1

Varity_R

0.39

gMVP

0.47

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

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