rs186893662

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001292063.2(OTOG):c.397G>A(p.Gly133Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000612 in 1,463,346 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 0.00068 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00060 ( 0 hom. )

Consequence

OTOG
NM_001292063.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 9.52

Variant links:

Genes affected

OTOG (HGNC:8516): (otogelin) The protein encoded by this gene is a component of the acellular membranes of the inner ear. Disruption of the orthologous mouse gene shows that it plays a role in auditory and vestibular functions. It is involved in fibrillar network organization, the anchoring of otoconial membranes and cupulae to the neuroepithelia, and likely in sound stimulation resistance. Mutations in this gene cause autosomal recessive nonsyndromic deafness, type 18B. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2014]

OTOG links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03608471).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OTOG	NM_001292063.2 link	c.397G>A	p.Gly133Ser	missense_variant	Exon 6 of 56	ENST00000399397.6	NP_001278992.1	H9KVB3
OTOG	NM_001277269.2 link	c.433G>A	p.Gly145Ser	missense_variant	Exon 5 of 55		NP_001264198.1	Q6ZRI0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
OTOG	ENST00000399397.6 link	c.397G>A	p.Gly133Ser	missense_variant	Exon 6 of 56	5	NM_001292063.2	ENSP00000382329.2	H9KVB3
OTOG	ENST00000399391.7 link	c.433G>A	p.Gly145Ser	missense_variant	Exon 5 of 55	5		ENSP00000382323.2	Q6ZRI0-1
OTOG	ENST00000428619.1 link	c.214G>A	p.Gly72Ser	missense_variant	Exon 4 of 4	3		ENSP00000399057.2	C9IZ84
OTOG	ENST00000498332.5 link	n.303G>A		non_coding_transcript_exon_variant	Exon 5 of 16	5

Frequencies

GnomAD3 genomes

AF:

0.000684

AC:

104

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00259

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000189

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00119

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000579

AC:

AN:

82878

Hom.:

AF XY:

0.000527

AC XY:

AN XY:

41758

show subpopulations

Gnomad AFR exome

AF:

0.000167

Gnomad AMR exome

AF:

0.000613

Gnomad ASJ exome

AF:

0.00265

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000238

Gnomad NFE exome

AF:

0.000960

Gnomad OTH exome

AF:

0.000409

GnomAD4 exome

AF:

0.000603

AC:

791

AN:

1311072

Hom.:

Cov.:

AF XY:

0.000594

AC XY:

378

AN XY:

636414

show subpopulations

Gnomad4 AFR exome

AF:

0.000104

Gnomad4 AMR exome

AF:

0.000485

Gnomad4 ASJ exome

AF:

0.00257

Gnomad4 EAS exome

AF:

0.000201

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000244

Gnomad4 NFE exome

AF:

0.000654

Gnomad4 OTH exome

AF:

0.000554

GnomAD4 genome

AF:

0.000683

AC:

104

AN:

152274

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

AN XY:

74464

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00259

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000189

Gnomad4 NFE

AF:

0.00119

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000737

Hom.:

Bravo

AF:

0.000582

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.000195

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:5

Dec 02, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported with or without a second variant in individuals with hearing loss in published literature (PMID: 32048449, 29907799); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 29907799, 32048449) -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Sep 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 27, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 145 of the OTOG protein (p.Gly145Ser). This variant is present in population databases (rs186893662, gnomAD 0.3%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with deafness (PMID: 32048449). ClinVar contains an entry for this variant (Variation ID: 417886). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not specified

Uncertain:1

Sep 02, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Gly145Ser variant in OTOG has not been previously reported in individuals with hearing loss, but has been identified in 0.3% (6/2276) of Ashkenazi Jewish and 0.1% (40/41916) of European chromosomes by the Genome Aggregation Database ( gnomAD, http://gnomad.broadinstitute.org; dbSNP rs186893662). This variant has a lso been reported in ClinVar (Variation ID 417886). Although this variant has be en seen in the general population, its frequency is not high enough to rule out a pathogenic role. Computational prediction tools and conservation analysis sugg est that the p.Gly145Ser variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, the clinical s ignificance of the p.Gly145Ser variant is uncertain. -

Autosomal recessive nonsyndromic hearing loss 18B

Uncertain:1

May 27, 2015

Division of Human Genetics, Children's Hospital of Philadelphia

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: research

- -

Hearing impairment

Uncertain:1

Apr 12, 2021

Department of Otolaryngology – Head & Neck Surgery, Cochlear Implant Center

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PM2_Supporting, PP3_Supporting -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.24

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

T;.;.

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.86

D;D;D

M_CAP

Benign

0.037

MetaRNN

Benign

0.036

T;T;T

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.3

M;.;.

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-5.0

D;.;.

REVEL

Benign

0.22

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;D;D

Vest4

0.65

MVP

0.22

ClinPred

0.17

GERP RS

5.4

Varity_R

0.85

gMVP

0.60

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