6-73482532-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_012123.4(MTO1):c.1549G>A(p.Val517Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00171 in 1,612,684 control chromosomes in the GnomAD database, including 7 homozygotes. 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.0015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0017 ( 7 hom. )

Consequence

MTO1
NM_012123.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.51

Publications

6 publications found

Variant links:

Genes affected

MTO1 (HGNC:19261): (mitochondrial tRNA translation optimization 1) This gene encodes a mitochondrial protein thought to be involved in mitochondrial tRNA modification. The encoded protein may also play a role in the expression of the non-syndromic and aminoglycoside-induced deafness phenotypes associated with a specific mutation in the mitochondrial 12S rRNA gene. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

MTO1 Gene-Disease associations (from GenCC):

mitochondrial disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency
Inheritance: AR, Unknown Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, G2P

MTO1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006876081).

BP6

Variant 6-73482532-G-A is Benign according to our data. Variant chr6-73482532-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 240847.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00147 (224/152266) while in subpopulation NFE AF = 0.00185 (126/68022). AF 95% confidence interval is 0.00159. There are 0 homozygotes in GnomAd4. There are 97 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 7 AR,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTO1	NM_012123.4 link	c.1549G>A	p.Val517Met	missense_variant	Exon 9 of 12	ENST00000498286.6	NP_036255.2	Q9Y2Z2-4
MTO1	NM_001123226.2 link	c.1669G>A	p.Val557Met	missense_variant	Exon 10 of 13		NP_001116698.1	Q9Y2Z2-6
MTO1	NM_133645.3 link	c.1624G>A	p.Val542Met	missense_variant	Exon 10 of 13		NP_598400.1	Q9Y2Z2-1
MTO1	XM_047418605.1 link	c.*27G>A		3_prime_UTR_variant	Exon 8 of 8		XP_047274561.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTO1	ENST00000498286.6 link	c.1549G>A	p.Val517Met	missense_variant	Exon 9 of 12	1	NM_012123.4	ENSP00000419561.2		Q9Y2Z2-4

Frequencies

GnomAD3 genomes

AF:

0.00147

AC:

224

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000700

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.00138

Gnomad ASJ

AF:

0.0112

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000378

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00185

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00173

AC:

435

AN:

251244

AF XY:

0.00185

show subpopulations

Gnomad AFR exome

AF:

0.000739

Gnomad AMR exome

AF:

0.000926

Gnomad ASJ exome

AF:

0.0139

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000416

Gnomad NFE exome

AF:

0.00196

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00174

AC:

2538

AN:

1460418

Hom.:

Cov.:

AF XY:

0.00175

AC XY:

1275

AN XY:

726584

show subpopulations

African (AFR)

AF:

0.000449

AC:

AN:

33436

American (AMR)

AF:

0.000850

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.0142

AC:

372

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.000128

AC:

AN:

86200

European-Finnish (FIN)

AF:

0.000505

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.000613

AC:

AN:

4896

European-Non Finnish (NFE)

AF:

0.00175

AC:

1944

AN:

1111674

Other (OTH)

AF:

0.00212

AC:

128

AN:

60262

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

119

237

356

474

593

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

148

222

296

370

<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:

0.00147

AC:

224

AN:

152266

Hom.:

Cov.:

AF XY:

0.00130

AC XY:

AN XY:

74440

show subpopulations

African (AFR)

AF:

0.000698

AC:

AN:

41574

American (AMR)

AF:

0.00138

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.0112

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.000378

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00185

AC:

126

AN:

68022

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

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:

0.00209

Hom.:

Bravo

AF:

0.00159

TwinsUK

AF:

0.00135

AC:

ALSPAC

AF:

0.00234

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00291

AC:

ExAC

AF:

0.00150

AC:

182

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00251

EpiControl

AF:

0.00261

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Mar 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

MTO1: BP4, BS1, BS2 -

May 12, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 29458409) -

Mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

.;.;.;T;T

Eigen

Benign

-0.073

Eigen_PC

Benign

0.064

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.86

D;T;T;T;D

M_CAP

Benign

0.0029

MetaRNN

Benign

0.0069

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

.;.;.;L;.

PhyloP100

2.5

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.48

N;N;N;N;N

REVEL

Benign

0.066

Sift

Benign

0.13

T;T;T;T;T

Sift4G

Benign

0.11

T;T;T;T;T

Polyphen

0.028

B;B;.;B;.

Vest4

0.30

MVP

0.38

MPC

0.30

ClinPred

0.0080

GERP RS

4.5

Varity_R

0.047

gMVP

0.44

Mutation Taster

=100/0

polymorphism

(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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over