11-72106082-G-A

Position:

chr11-72106082-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001393500.2(TOMT):c.131G>A(p.Arg44Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000142 in 1,549,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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: 0.000013 ( 0 hom. )

Consequence

TOMT
NM_001393500.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.62

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:):

LRTOMT links:

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ACMG classification

Classification made for transcript

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=0.11215523).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
TOMT	NM_001393500.2 linkuse as main transcript	c.131G>A	p.Arg44Gln	missense_variant	1/3	ENST00000541899.3	NP_001380429.1
LRTOMT	NM_001145309.4 linkuse as main transcript	c.230G>A	p.Arg77Gln	missense_variant	7/9		NP_001138781.1
LRTOMT	NM_001145308.5 linkuse as main transcript	c.230G>A	p.Arg77Gln	missense_variant	5/7		NP_001138780.1
LRTOMT	NM_001145310.4 linkuse as main transcript	c.110G>A	p.Arg37Gln	missense_variant	7/9		NP_001138782.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TOMT	ENST00000541899.3 linkuse as main transcript	c.131G>A	p.Arg44Gln	missense_variant	1/3	5	NM_001393500.2	ENSP00000494667	P1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000259

AC:

AN:

154692

Hom.:

AF XY:

0.0000243

AC XY:

AN XY:

82194

show subpopulations

Gnomad AFR exome

AF:

0.000253

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:

0.0000332

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000129

AC:

AN:

1397802

Hom.:

Cov.:

AF XY:

0.0000102

AC XY:

AN XY:

689562

show subpopulations

Gnomad4 AFR exome

AF:

0.000127

Gnomad4 AMR exome

AF:

0.00

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:

0.0000111

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152128

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74314

show subpopulations

Gnomad4 AFR

AF:

0.0000966

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000993

Hom.:

Bravo

AF:

0.0000340

ExAC

AF:

0.0000387

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 13, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt LRTOMT protein function. ClinVar contains an entry for this variant (Variation ID: 1481162). This variant has not been reported in the literature in individuals affected with LRTOMT-related conditions. This variant is present in population databases (rs747695775, gnomAD 0.02%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 77 of the LRTOMT protein (p.Arg77Gln). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.27

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.058

T;T;.

Eigen

Benign

-0.43

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.36

LIST_S2

Benign

0.65

T;.;T

M_CAP

Benign

0.042

MetaRNN

Benign

0.11

T;T;T

MetaSVM

Benign

-0.55

MutationAssessor

Benign

0.67

N;N;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.20

N;N;.

REVEL

Benign

0.099

Sift

Benign

0.054

T;T;.

Sift4G

Benign

0.18

T;T;.

Polyphen

0.0010

B;B;.

Vest4

0.083

MVP

0.78

MPC

0.071

ClinPred

0.053

GERP RS

2.7

Varity_R

0.045

gMVP

0.36

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over