11-17606039-C-A

Position:

• chr11-17606039-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001292063.2(OTOG):​c.4060C>A​(p.Pro1354Thr) variant causes a missense 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: OTOG NM_001292063.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.89

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 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.789

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OTOG	NM_001292063.2	c.4060C>A	p.Pro1354Thr	missense_variant	33/56	ENST00000399397.6
OTOG	NM_001277269.2	c.4096C>A	p.Pro1366Thr	missense_variant	32/55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OTOG	ENST00000399397.6	c.4060C>A	p.Pro1354Thr	missense_variant	33/56	5	NM_001292063.2	P2
OTOG	ENST00000399391.7	c.4096C>A	p.Pro1366Thr	missense_variant	32/55	5		A2
OTOG	ENST00000342528.2	n.1398C>A		non_coding_transcript_exon_variant	9/22	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

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 18, 2017

The p.Pro1366Thr variant in OTOG has not been previously reported in individuals with hearing loss or in large population studies. Computational prediction tool s and conservation analysis do not provide strong support for or against an impa ct to the protein. In summary, the clinical significance of the p.Pro1366Thr var iant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.011	T
BayesDel_noAF	Benign	-0.25
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.34	T;.
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Benign	0.046	D
MetaRNN	Pathogenic	0.79	D;D
MetaSVM	Benign	-0.86	T
MutationAssessor	Uncertain	2.8	M;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Benign	0.44	T
PROVEAN	Uncertain	-3.7	D;D
REVEL	Uncertain	0.35
Sift	Uncertain	0.010	D;D
Sift4G	Pathogenic	0.0	D;D
Vest4		0.35
MutPred		0.86		Loss of ubiquitination at K1365 (P = 0.1446);.;
MVP		0.35
ClinPred		0.99	D
GERP RS		4.1
Varity_R		0.72
gMVP		0.69

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1554974319; hg19: chr11-17627586;