TOMT p.Gly147Ser

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is The variant received 4 classification points (ACMG Germline Pathogenicity v2019). PM2PP3_Moderate

The NM_001393500.2(TOMT):c.439G>A (p.Gly147Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a cumulative frequency of 0.000021 (AC=32) in the gnomAD database across 1,523,286 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.0000305. In-silico predictor (REVEL) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 9.25). Variant has been reported in ClinVar as Uncertain Significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

TOMT
NM_001393500.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.25

Publications

0 publications found

Variant links:

Genes affected

TOMT (HGNC:55527): (transmembrane O-methyltransferase) This gene encodes a catechol-O-methyltransferase that catalyzes the transfer of a methyl group from S-adenosyl-L-methionine to a hydroxyl group of catechols and is essential for auditory and vestibular function. Mutations in this gene have been associated with nonsyndromic deafness. Readthrough transcription is observed across this gene and the adjacent leucine-rich repeat containing 51 gene. A third locus (GeneID:220074) is defined to represent the readthrough transcripts. [provided by RefSeq, Feb 2021]

TOMT links:

LRTOMT (HGNC:25033): (leucine rich transmembrane and O-methyltransferase domain containing) This locus represents naturally occurring readthrough transcription between the neighboring LRRC51 (leucine-rich repeat containing 51) and TOMT (transmembrane O-methyltransferase) genes on chromosome 11. The readthrough transcript encodes a fusion protein that shares sequence identity with each individual gene product. Multiple reports implicate mutations in this gene in nonsyndromic deafness.[provided by RefSeq, Feb 2021]

LRTOMT Gene-Disease associations (from GenCC):

autosomal recessive nonsyndromic hearing loss 63
Inheritance: AR, Unknown Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, Ambry Genetics
hearing loss, autosomal recessive
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LRTOMT links:

ANAPC15 (HGNC:24531): (anaphase promoting complex subunit 15) Involved in regulation of mitotic cell cycle spindle assembly checkpoint. Part of anaphase-promoting complex. [provided by Alliance of Genome Resources, Apr 2022]

ANAPC15 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_001393500.2, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

Classification according to ACMG Germline Pathogenicity v2019

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 points.

PM2

Very rare in gnomAD for AR/unknown gene (popmax AF < threshold/10) — PM2; GnomAD popmax AF = 0.0000305 — very rare for unknown gene (threshold 0.001) — PM2 moderate.

PP3

Germline meta computational scorer (REVEL/MetaRNN/BayesDel) predicts damaging effect — moderate evidence (PP3); Splicing verdict: not pathogenic.; Germline computational verdict: pathogenic (Moderate).

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_001393500.2. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TOMT	NM_001393500.2	MANE Select	c.439G>A	p.Gly147Ser	missense	Exon 2 of 3	NP_001380429.1	A0A2R8Y5M8
LRTOMT	NM_001145308.5		c.538G>A	p.Gly180Ser	missense	Exon 6 of 7	NP_001138780.1
LRTOMT	NM_001145309.4		c.538G>A	p.Gly180Ser	missense	Exon 8 of 9	NP_001138781.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TOMT	ENST00000541899.3	TSL:5 MANE Select	c.439G>A	p.Gly147Ser	missense	Exon 2 of 3	ENSP00000494667.1	A0A2R8Y5M8
LRTOMT	ENST00000307198.11	TSL:2	c.538G>A	p.Gly180Ser	missense	Exon 6 of 7	ENSP00000305742.7	Q8WZ04-1
ANAPC15	ENST00000502597.2	TSL:1	c.64-497C>T		intron	N/A	ENSP00000441774.1	F5GWM6

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000520

AC:

AN:

134688

AF XY:

0.0000426

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000320

Gnomad EAS exome

AF:

0.0000945

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000198

Gnomad OTH exome

AF:

0.000523

GnomAD4 exome

AF:

0.0000197

AC:

AN:

1371036

Hom.:

Cov.:

AF XY:

0.0000178

AC XY:

AN XY:

672704

show subpopulations

African (AFR)

AF:

0.0000323

AC:

AN:

30954

American (AMR)

AF:

0.0000897

AC:

AN:

33428

Ashkenazi Jewish (ASJ)

AF:

0.0000860

AC:

AN:

23248

East Asian (EAS)

AF:

0.0000564

AC:

AN:

35444

South Asian (SAS)

AF:

0.0000397

AC:

AN:

75586

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48272

Middle Eastern (MID)

AF:

0.000181

AC:

AN:

5536

European-Non Finnish (NFE)

AF:

0.00000848

AC:

AN:

1061826

Other (OTH)

AF:

0.000106

AC:

AN:

56742

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

AF:

0.0000328

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74448

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41530

American (AMR)

AF:

0.000131

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000718

Local populations

ToMMo 61KJPN (+60KJPN MNV)

AF:

0.0000330

AC:

AN:

122354

Turkish Variome

AF:

0.000453

AC:

AN:

6626

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Autosomal recessive nonsyndromic hearing loss 63 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.56

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.92

M_CAP

Pathogenic

0.32

MetaRNN

Pathogenic

0.89

MetaSVM

Uncertain

0.60

MutationAssessor

Pathogenic

3.6

PhyloP100

9.3

PrimateAI

Uncertain

0.54

PROVEAN

Pathogenic

-5.5

REVEL

Pathogenic

0.87

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Varity_R

0.89

gMVP

0.64

Mutation Taster

=29/71

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

Classification according to ACMG Germline Pathogenicity v2019

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

Local populations

ClinVar

Computational scores

Splicing

Publications

Other links and lift over