Genetic Variant OTOF:p.Arg544Ser (chr2-26480959-G-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_194248.3(OTOF):c.1630C>A(p.Arg544Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000411 in 1,460,720 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R544C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

OTOF
NM_194248.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.78

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

OTOF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.879

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OTOF	NM_194248.3 link	c.1630C>A	p.Arg544Ser	missense_variant	Exon 15 of 47	ENST00000272371.7	NP_919224.1	Q9HC10-1
OTOF	NM_001287489.2 link	c.1630C>A	p.Arg544Ser	missense_variant	Exon 15 of 46		NP_001274418.1	Q9HC10-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OTOF	ENST00000272371.7 link	c.1630C>A	p.Arg544Ser	missense_variant	Exon 15 of 47	1	NM_194248.3	ENSP00000272371.2		Q9HC10-1
OTOF	ENST00000403946.7 link	c.1630C>A	p.Arg544Ser	missense_variant	Exon 15 of 46	5		ENSP00000385255.3		Q9HC10-5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1460720

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726640

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52280

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1112006

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.41

BayesDel_noAF

Pathogenic

0.35

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.54

D;.

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.95

D;D

M_CAP

Uncertain

0.19

MetaRNN

Pathogenic

0.88

D;D

MetaSVM

Uncertain

0.49

MutationAssessor

Pathogenic

3.4

M;M

PhyloP100

4.8

PrimateAI

Pathogenic

0.88

PROVEAN

Pathogenic

-5.5

D;D

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0060

D;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

D;.

Vest4

0.92

MutPred

0.57

Gain of disorder (P = 0.059);Gain of disorder (P = 0.059);

MVP

0.93

MPC

0.70

ClinPred

1.0

GERP RS

3.2

Varity_R

0.77

gMVP

0.76

Mutation Taster

=33/67

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over