Genetic Variant OTOF:p.Gly1888Asp (chr2-26460901-C-T) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_194248.3(OTOF):c.5663G>A(p.Gly1888Asp) variant causes a missense change involving the alteration of a 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 not provided (no stars).

Frequency

Genomes: not found (cov: 32)

Consequence

OTOF
NM_194248.3 missense

Scores

Clinical Significance

not provided no classification provided O:1

Conservation

PhyloP100: 7.90

Publications

2 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: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_194248.3

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.822

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.5663G>A	p.Gly1888Asp	missense	Exon 44 of 47	NP_919224.1	Q9HC10-1
OTOF	NM_194323.3	MANE Plus Clinical	c.3362G>A	p.Gly1121Asp	missense	Exon 27 of 29	NP_919304.1	Q9HC10-2
OTOF	NM_001287489.2		c.5663G>A	p.Gly1888Asp	missense	Exon 44 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.5663G>A	p.Gly1888Asp	missense	Exon 44 of 47	ENSP00000272371.2	Q9HC10-1
OTOF	ENST00000339598.8	TSL:1 MANE Plus Clinical	c.3362G>A	p.Gly1121Asp	missense	Exon 27 of 29	ENSP00000344521.3	Q9HC10-2
OTOF	ENST00000402415.8	TSL:1	c.3422G>A	p.Gly1141Asp	missense	Exon 26 of 29	ENSP00000383906.4	A0A2U3TZT7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions

Significance:not provided

Revision:no classification provided

View on ClinVar

Pathogenic

VUS

Benign

Condition

Autosomal recessive nonsyndromic hearing loss 9 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.40

BayesDel_noAF

Pathogenic

0.34

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.78

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.81

FATHMM_MKL

Uncertain

0.94

LIST_S2

Pathogenic

1.0

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.82

MetaSVM

Uncertain

0.76

MutationAssessor

Pathogenic

3.6

PhyloP100

7.9

PrimateAI

Pathogenic

0.87

PROVEAN

Pathogenic

-6.8

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.98

MutPred

0.27

Loss of sheet (P = 0.0228)

MVP

0.97

MPC

0.75

ClinPred

1.0

GERP RS

4.7

Varity_R

0.93

gMVP

0.94

Mutation Taster

=5/95

disease causing

(source)

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

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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