6-73461892-T-G

Variant names:

• chr6-73461892-T-G
• rs1582665975
• NM_012123.4:c.38T>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_012123.4(MTO1):​c.38T>G​(p.Val13Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign 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. V13A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MTO1 NM_012123.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.217
• Publications: 0 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.059390634).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MTO1	NM_012123.4	c.38T>G	p.Val13Gly	missense_variant	Exon 1 of 12	ENST00000498286.6	NP_036255.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MTO1	ENST00000498286.6	c.38T>G	p.Val13Gly	missense_variant	Exon 1 of 12	1	NM_012123.4	ENSP00000419561.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.052
BayesDel_addAF	Benign	-0.18	T
BayesDel_noAF	Benign	-0.50
CADD	Benign	8.7
DANN	Benign	0.67
DEOGEN2	Benign	0.11	.;.;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.021	N
LIST_S2	Benign	0.24	T;T;T
M_CAP	Benign	0.0019	T
MetaRNN	Benign	0.059	T;T;T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.34	N;N;N
PhyloP100		0.22
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.28	N;N;N
REVEL	Benign	0.035
Sift	Benign	0.14	T;T;T
Sift4G	Pathogenic	0.0010	D;D;D
Polyphen		0.0	B;B;B
Vest4		0.19
MutPred		0.35		Loss of stability (P = 0.014);Loss of stability (P = 0.014);Loss of stability (P = 0.014);
MVP		0.18
MPC		0.31
ClinPred		0.071	T
GERP RS		3.3
PromoterAI		-0.058	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.047
gMVP		0.50
Mutation Taster		=96/4	polymorphism

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

Other links and lift over

dbSNP: rs1582665975; hg19: chr6-74171615;