NM_012123.4:c.1082T>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_012123.4(MTO1):c.1082T>C(p.Met361Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000133 in 1,613,960 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00077 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

MTO1
NM_012123.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 6.79

Publications

0 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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.05512142).

BP6

Variant 6-73480079-T-C is Benign according to our data. Variant chr6-73480079-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 473195.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000769 (117/152094) while in subpopulation AFR AF = 0.0027 (112/41476). AF 95% confidence interval is 0.00229. There are 0 homozygotes in GnomAd4. There are 56 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012123.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MTO1	NM_012123.4	MANE Select	c.1082T>C	p.Met361Thr	missense	Exon 6 of 12	NP_036255.2
MTO1	NM_001123226.2		c.1082T>C	p.Met361Thr	missense	Exon 6 of 13	NP_001116698.1
MTO1	NM_133645.3		c.1082T>C	p.Met361Thr	missense	Exon 6 of 13	NP_598400.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MTO1	ENST00000498286.6	TSL:1 MANE Select	c.1082T>C	p.Met361Thr	missense	Exon 6 of 12	ENSP00000419561.2
MTO1	ENST00000415954.6	TSL:1	c.1082T>C	p.Met361Thr	missense	Exon 6 of 13	ENSP00000402038.2
MTO1	ENST00000370300.8	TSL:1	c.1082T>C	p.Met361Thr	missense	Exon 6 of 13	ENSP00000359323.4

Frequencies

GnomAD3 genomes

AF:

0.000770

AC:

117

AN:

151976

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00271

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000195

AC:

AN:

251362

AF XY:

0.000118

show subpopulations

Gnomad AFR exome

AF:

0.00265

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000670

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000564

AC XY:

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00227

AC:

AN:

33478

American (AMR)

AF:

0.000112

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1112000

Other (OTH)

AF:

0.000232

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

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:

0.000769

AC:

117

AN:

152094

Hom.:

Cov.:

AF XY:

0.000753

AC XY:

AN XY:

74350

show subpopulations

African (AFR)

AF:

0.00270

AC:

112

AN:

41476

American (AMR)

AF:

0.000197

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000207

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67992

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

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:

0.000812

Hom.:

Bravo

AF:

0.00102

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000222

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

Apr 12, 2024

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

Mitochondrial hypertrophic cardiomyopathy with lactic acidosis due to MTO1 deficiency

Benign:1

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.10

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.76

Eigen

Benign

0.14

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.76

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.055

MetaSVM

Uncertain

-0.28

MutationAssessor

Uncertain

2.8

PhyloP100

6.8

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.2

REVEL

Uncertain

0.55

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0050

Polyphen

0.10

Vest4

0.61

MVP

0.80

MPC

0.32

ClinPred

0.089

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.51

gMVP

0.68

Mutation Taster

=55/45

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over