rs535970426

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001292063.2(OTOG):c.292+4A>C variant causes a splice region, intron change. The variant allele was found at a frequency of 0.00041 in 1,550,306 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00043 ( 1 hom. )

Consequence

OTOG
NM_001292063.2 splice_region, intron

Scores

Splicing: ADA: 0.9929

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 3.83

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 Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OTOG	NM_001292063.2 link	c.292+4A>C		splice_region_variant, intron_variant	Intron 4 of 55	ENST00000399397.6	NP_001278992.1	H9KVB3
OTOG	NM_001277269.2 link	c.328+4A>C		splice_region_variant, intron_variant	Intron 3 of 54		NP_001264198.1	Q6ZRI0-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
OTOG	ENST00000399397.6 link	c.292+4A>C	splice_region_variant, intron_variant	Intron 4 of 55	5	NM_001292063.2	ENSP00000382329.2	H9KVB3
OTOG	ENST00000399391.7 link	c.328+4A>C	splice_region_variant, intron_variant	Intron 3 of 54	5		ENSP00000382323.2	Q6ZRI0-1
OTOG	ENST00000428619.1 link	c.109+4A>C	splice_region_variant, intron_variant	Intron 2 of 3	3		ENSP00000399057.2	C9IZ84
OTOG	ENST00000498332.5 link	n.198+4A>C	splice_region_variant, intron_variant	Intron 3 of 15	5

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000382

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000188

AC:

AN:

149184

Hom.:

AF XY:

0.000187

AC XY:

AN XY:

80346

show subpopulations

Gnomad AFR exome

AF:

0.000147

Gnomad AMR exome

AF:

0.000448

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:

0.000291

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000431

AC:

603

AN:

1398012

Hom.:

Cov.:

AF XY:

0.000439

AC XY:

303

AN XY:

689574

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000420

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000207

Gnomad4 NFE exome

AF:

0.000533

Gnomad4 OTH exome

AF:

0.000207

GnomAD4 genome

AF:

0.000217

AC:

AN:

152294

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000382

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.000229

Hom.:

Bravo

AF:

0.000276

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Nov 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

OTOG: PM2:Supporting -

Aug 10, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. ClinVar contains an entry for this variant (Variation ID: 432317). This variant has not been reported in the literature in individuals affected with OTOG-related conditions. This variant is present in population databases (rs535970426, gnomAD 0.04%). This sequence change falls in intron 3 of the OTOG gene. It does not directly change the encoded amino acid sequence of the OTOG protein. It affects a nucleotide within the consensus splice site. -

Dec 12, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports a deleterious effect on splicing -

not specified

Uncertain:1

Jul 25, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.328+4A>C variant in OTOG has not been previously reported in individuals w ith hearing loss, but has been identified in 10/24674 of Latino chromosomes and 17/66944 of European chromosomes by the Genome Aggregation Database (gnomAD, htt p://gnomad.broadinstitute.org/; dbSNP rs535970426). Although this variant has be en seen in the general population, its frequency is low enough to be consistent with a recessive carrier frequency. This variant is located in the 5' splice reg ion. Computational tools suggest a possible impact to splicing. However, this in formation is not predictive enough to determine out pathogenicity. In summary, t he clinical significance of the c.328+4A>C variant is uncertain. -

Autosomal recessive nonsyndromic hearing loss 18B

Uncertain:1

Sep 08, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Benign

0.83

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Pathogenic

0.87

SpliceAI score (max)

0.50

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.50

Position offset: -4

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