Genetic Variant OTOG:p.Pro1635Gln (chr11-17610204-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001292063.2(OTOG):c.4904C>A(p.Pro1635Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,938 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1635L) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OTOG
NM_001292063.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.102

Publications

18 publications found

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 Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 18B
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Laboratory for Molecular Medicine, Ambry Genetics
nonsyndromic genetic hearing loss
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

OTOG links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.055529416).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OTOG	NM_001292063.2 link	c.4904C>A	p.Pro1635Gln	missense_variant	Exon 36 of 56	ENST00000399397.6	NP_001278992.1	H9KVB3
OTOG	NM_001277269.2 link	c.4940C>A	p.Pro1647Gln	missense_variant	Exon 35 of 55		NP_001264198.1	Q6ZRI0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
OTOG	ENST00000399397.6 link	c.4904C>A	p.Pro1635Gln	missense_variant	Exon 36 of 56	5	NM_001292063.2	ENSP00000382329.2	H9KVB3
OTOG	ENST00000399391.7 link	c.4940C>A	p.Pro1647Gln	missense_variant	Exon 35 of 55	5		ENSP00000382323.2	Q6ZRI0-1
OTOG	ENST00000342528.2 link	n.2242C>A		non_coding_transcript_exon_variant	Exon 12 of 22	2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151938

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1398214

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

689632

African (AFR)

AF:

0.00

AC:

AN:

31598

American (AMR)

AF:

0.00

AC:

AN:

35694

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25166

East Asian (EAS)

AF:

0.00

AC:

AN:

35734

South Asian (SAS)

AF:

0.00

AC:

AN:

79228

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48196

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1078898

Other (OTH)

AF:

0.00

AC:

AN:

58002

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151938

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74202

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41346

American (AMR)

AF:

0.00

AC:

AN:

15264

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67952

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

27038

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.66

CADD

Benign

0.91

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.036

T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.044

LIST_S2

Benign

0.44

T;T

M_CAP

Benign

0.025

MetaRNN

Benign

0.056

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

N;.

PhyloP100

0.10

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.020

N;N

REVEL

Benign

0.053

Sift

Benign

0.27

T;D

Sift4G

Benign

0.56

T;T

Vest4

0.10

MutPred

0.27

Gain of solvent accessibility (P = 0.0202);.;

MVP

0.040

ClinPred

0.11

GERP RS

4.1

Varity_R

0.029

gMVP

0.31

Mutation Taster

=99/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over