rs767774116

Positions:

Variant summary

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

The NM_001292063.2(OTOG):c.3438G>A(p.Met1146Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000322 in 1,550,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

OTOG
NM_001292063.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -2.97

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:

OTOG (HGNC:):

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=0.067872584).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OTOG	NM_001292063.2 linkuse as main transcript	c.3438G>A	p.Met1146Ile	missense_variant	29/56	ENST00000399397.6	NP_001278992.1	H9KVB3
OTOG	NM_001277269.2 linkuse as main transcript	c.3474G>A	p.Met1158Ile	missense_variant	28/55		NP_001264198.1	Q6ZRI0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
OTOG	ENST00000399397.6 linkuse as main transcript	c.3438G>A	p.Met1146Ile	missense_variant	29/56	5	NM_001292063.2	ENSP00000382329.2	H9KVB3
OTOG	ENST00000399391.7 linkuse as main transcript	c.3474G>A	p.Met1158Ile	missense_variant	28/55	5		ENSP00000382323.2	Q6ZRI0-1
OTOG	ENST00000342528.2 linkuse as main transcript	n.803G>A		non_coding_transcript_exon_variant	6/22	2

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000199

AC:

AN:

150424

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

80736

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:

0.0000537

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000336

AC:

AN:

1398592

Hom.:

Cov.:

AF XY:

0.0000362

AC XY:

AN XY:

689790

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:

0.0000436

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

May 16, 2017

The p.Met1158Ile variant in OTOG has been identified by our laboratory in 1 indi vidual who had an alternative genetic cause for the hearing loss. It has also be en identified in 2/52752 European chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs767774116). The methionine ( Met) at position 1158 is not conserved in mammals or evolutionary distant specie s and computational prediction tools suggest that this variant may not impact th e protein, raising the possibility that a change at this position may be tolerat ed. However, this information is not predictive enough to rule out pathogenicity . In summary, the clinical significance of the p.Met1158Ile variant is uncertain . -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 18, 2022

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. 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. ClinVar contains an entry for this variant (Variation ID: 505195). This variant has not been reported in the literature in individuals affected with OTOG-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.004%). This sequence change replaces methionine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 1158 of the OTOG protein (p.Met1158Ile). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.83

CADD

Benign

0.0010

DANN

Benign

0.83

DEOGEN2

Benign

0.11

T;.

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.011

LIST_S2

Benign

0.85

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.068

T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

-0.34

N;.

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.79

N;.

REVEL

Benign

0.050

Sift

Benign

0.080

T;.

Sift4G

Uncertain

0.013

D;D

Vest4

0.082

MutPred

0.41

Loss of disorder (P = 0.0832);.;

MVP

0.048

ClinPred

0.089

GERP RS

-11

Varity_R

0.18

gMVP

0.47

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