Genetic Variant OTOF:p.Arg970Gly (chr2-26475997-G-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate

The NM_194248.3(OTOF):c.2908C>G(p.Arg970Gly) variant causes a missense change. 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R970C) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Consequence

OTOF
NM_194248.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.64

Publications

0 publications found

Variant links:

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]

OTOF Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 9
Inheritance: AR, Unknown Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae)
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

OTOF links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 5 uncertain in NM_194248.3

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.9

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_194248.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
OTOF	NM_194248.3	MANE Select	c.2908C>G	p.Arg970Gly	missense	Exon 24 of 47	NP_919224.1	Q9HC10-1
OTOF	NM_194323.3	MANE Plus Clinical	c.667C>G	p.Arg223Gly	missense	Exon 7 of 29	NP_919304.1	Q9HC10-2
OTOF	NM_001287489.2		c.2908C>G	p.Arg970Gly	missense	Exon 24 of 46	NP_001274418.1	Q9HC10-5

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
OTOF	ENST00000272371.7	TSL:1 MANE Select	c.2908C>G	p.Arg970Gly	missense	Exon 24 of 47	ENSP00000272371.2	Q9HC10-1
OTOF	ENST00000339598.8	TSL:1 MANE Plus Clinical	c.667C>G	p.Arg223Gly	missense	Exon 7 of 29	ENSP00000344521.3	Q9HC10-2
OTOF	ENST00000402415.8	TSL:1	c.667C>G	p.Arg223Gly	missense	Exon 6 of 29	ENSP00000383906.4	A0A2U3TZT7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.37

BayesDel_noAF

Pathogenic

0.29

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.83

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.16

MetaRNN

Pathogenic

0.90

MetaSVM

Uncertain

0.38

MutationAssessor

Pathogenic

3.9

PhyloP100

4.6

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-6.2

REVEL

Pathogenic

0.83

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.91

MutPred

0.71

Loss of methylation at R970 (P = 0.0215)

MVP

0.93

MPC

0.75

ClinPred

1.0

GERP RS

4.5

Varity_R

0.96

gMVP

0.83

Mutation Taster

=28/72

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over