rs754883697

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP5

The NM_001292063.2(OTOG):c.8541+5G>A variant causes a splice region, intron change. The variant allele was found at a frequency of 0.0000871 in 1,550,708 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000087 ( 0 hom. )

Consequence

OTOG
NM_001292063.2 splice_region, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:2

Conservation

PhyloP100: 7.12

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;

PP5

Variant 11-17645648-G-A is Pathogenic according to our data. Variant chr11-17645648-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 505108.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Likely_pathogenic=1}. Variant chr11-17645648-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OTOG	NM_001292063.2 link	c.8541+5G>A		splice_region_variant, intron_variant	Intron 55 of 55	ENST00000399397.6	NP_001278992.1	H9KVB3
OTOG	NM_001277269.2 link	c.8577+5G>A		splice_region_variant, intron_variant	Intron 54 of 54		NP_001264198.1	Q6ZRI0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OTOG	ENST00000399397.6 link	c.8541+5G>A		splice_region_variant, intron_variant	Intron 55 of 55	5	NM_001292063.2	ENSP00000382329.2		H9KVB3
OTOG	ENST00000399391.7 link	c.8577+5G>A		splice_region_variant, intron_variant	Intron 54 of 54	5		ENSP00000382323.2		Q6ZRI0-1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152268

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000964

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000147

AC:

AN:

149252

Hom.:

AF XY:

0.000174

AC XY:

AN XY:

80378

show subpopulations

Gnomad AFR exome

AF:

0.000148

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000185

Gnomad SAS exome

AF:

0.000799

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000231

GnomAD4 exome

AF:

0.0000872

AC:

122

AN:

1398322

Hom.:

Cov.:

AF XY:

0.000110

AC XY:

AN XY:

689692

show subpopulations

Gnomad4 AFR exome

AF:

0.0000633

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000560

Gnomad4 SAS exome

AF:

0.000656

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000575

Gnomad4 OTH exome

AF:

0.0000517

GnomAD4 genome

AF:

0.0000853

AC:

AN:

152386

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74526

show subpopulations

Gnomad4 AFR

AF:

0.0000962

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.0000491

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Uncertain:1

Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jan 07, 2025	Has not been previously published as pathogenic or benign to our knowledge; Intronic variant directly or indirectly altering the +5 splice site in a gene for which loss of function is a known mechanism of disease, and splice predictors support a deleterious effect -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jul 21, 2024	This sequence change falls in intron 54 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. This variant is present in population databases (rs754883697, gnomAD 0.08%). This variant has been observed in individual(s) with clinical features of OTOG-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 505108). 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. 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. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jun 21, 2016

The c.8577+5G>A variant in OTOG has not been previously reported in individuals with hearing loss. This variant has been identified in 0.4% (1/286) of Latino ch romosomes and in 0.1% (7/7640) of South Asian chromosomes by the Exome Aggregati on Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs754883697). Althoug h this variant has been seen in the general population, its frequency is not hig h enough to rule out a pathogenic role. This variant is located in the 5' splice region. Computational tools do suggest an impact to splicing. However, this inf ormation is not predictive enough to rule out pathogenicity. In summary, the cli nical significance of the c.8577+5G>A variant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Benign

0.95

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.96

SpliceAI score (max)

0.62

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.62

Position offset: -5

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