rs113433719

chr2-26475394-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_194248.3(OTOF):c.3091A>G(p.Ile1031Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000806 in 1,613,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: OTOF NM_194248.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.11

Genes affected

OTOF (HGNC:8515): (otoferlin) Mutations in this gene are a cause of neurosensory nonsyndromic recessive deafness, DFNB9. The short form of the encoded protein has 3 C2 domains, a single carboxy-terminal transmembrane domain found also in the C. elegans spermatogenesis factor FER-1 and human dysferlin, while the long form has 6 C2 domains. The homology suggests that this protein may be involved in vesicle membrane fusion. Several transcript variants encoding multiple isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25993314).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OTOF	NM_194248.3	c.3091A>G	p.Ile1031Val	missense_variant	25/47	ENST00000272371.7
OTOF	NM_194323.3	c.850A>G	p.Ile284Val	missense_variant	8/29	ENST00000339598.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OTOF	ENST00000272371.7	c.3091A>G	p.Ile1031Val	missense_variant	25/47	1	NM_194248.3	A1
OTOF	ENST00000339598.8	c.850A>G	p.Ile284Val	missense_variant	8/29	1	NM_194323.3

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152156 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.00000798 AC: 2 AN: 250740 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135826

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.0000177

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1460886 Hom.: 0 Cov.: 32 AF XY: 0.00000550 AC XY: 4 AN XY: 726752

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000719

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152274 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74458

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.00000756

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

Asia WGS AF: 0.000577 AC: 2 AN: 3478

EpiCase AF: 0.0000545

EpiControl AF: 0.00

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

Jun 07, 2016

The p.Ile1031Val variant in OTOF has not been previously reported in individuals with hearing loss. This variant has been identified in 1/8600 European American chromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.edu /EVS/; dbSNP rs113433719). Although this variant has been seen in the general po pulation, its frequency is not high enough to rule out a pathogenic role. Comput ational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determi ne pathogenicity. In summary, the clinical significance of the p.Ile1031Val vari ant is uncertain. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.087
BayesDel_addAF	Benign	-0.046	T
BayesDel_noAF	Benign	-0.29
Cadd	Uncertain	24
Dann	Uncertain	1.0
Eigen	Benign	0.063
Eigen_PC	Benign	0.21
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.26	T;T;T;T;T;T
MetaSVM	Benign	-0.65	T
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	-0.24	N;N;.;N;N;.
REVEL	Benign	0.20
Sift	Benign	0.40	T;T;.;T;T;.
Sift4G	Benign	0.41	T;T;.;T;T;.
Polyphen		0.057	B;B;.;D;.;P
Vest4		0.50
MVP		0.52
MPC		0.37
ClinPred		0.56	D
GERP RS		5.6
Varity_R		0.11
gMVP		0.16

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

LitVar

Other links and lift over

dbSNP: rs113433719; hg19: chr2-26698262;