rs1166068398

chr11-17645773-C-Achr11-17645773-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_001292063.2(OTOG):c.8571C>A(p.Cys2857Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. C2857C) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: OTOG NM_001292063.2 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.696

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0196 CDS is truncated, and there are 1 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OTOG	NM_001292063.2	c.8571C>A	p.Cys2857Ter	stop_gained	56/56	ENST00000399397.6
OTOG	NM_001277269.2	c.8607C>A	p.Cys2869Ter	stop_gained	55/55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OTOG	ENST00000399397.6	c.8571C>A	p.Cys2857Ter	stop_gained	56/56	5	NM_001292063.2	P2
OTOG	ENST00000399391.7	c.8607C>A	p.Cys2869Ter	stop_gained	55/55	5		A2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.58
Cadd	Pathogenic	39
Dann	Uncertain	0.99
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.85	D
MutationTaster	Benign	1.0	D;D
Vest4		0.43
GERP RS		1.0

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

Other links and lift over

dbSNP: rs1166068398; hg19: chr11-17667320;