chrM-7373-A-G

Variant names:

• chrM-7373-A-G
• rs1057516060
• ENST00000361624.2:c.1470A>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP7

The ENST00000361624.2(MT-CO1):​c.1470A>G​(p.Met490Met) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Mitomap GenBank: 𝑓 0.0 (AC: 1)
• Consequence: MT-CO1 ENST00000361624.2 synonymous
• Clinical Significance: Uncertain significance no assertion criteria provided U:1 No linked disesase in Mitomap
• Conservation: PhyloP100: -10.2
• Publications: 0 publications found

Genes affected

MT-CO1 (HGNC:7419): (mitochondrially encoded cytochrome c oxidase I) Contributes to cytochrome-c oxidase activity. Predicted to be involved in electron transport coupled proton transport and mitochondrial electron transport, cytochrome c to oxygen. Part of mitochondrial respiratory chain complex III and mitochondrial respiratory chain complex IV. [provided by Alliance of Genome Resources, Apr 2022]

MT-CO2 (HGNC:7421): (mitochondrially encoded cytochrome c oxidase II) Contributes to cytochrome-c oxidase activity. Predicted to be involved in mitochondrial electron transport, cytochrome c to oxygen and positive regulation of vasoconstriction. Located in mitochondrial inner membrane. Part of respiratory chain complex IV. Biomarker of Huntington's disease and stomach cancer. [provided by Alliance of Genome Resources, Apr 2022]

TRND (HGNC:7478): (mitochondrially encoded tRNA aspartic acid)

TRNS1 (HGNC:7497): (mitochondrially encoded tRNA serine 1 (UCN))

TRNS1 Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen
• MERRF syndrome

  Inheritance: Mitochondrial Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very low frequency in mitomap database: 0.0
• BP7: Synonymous conserved (PhyloP=-10.2 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000361624.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
There are no transcript annotations for this variant.

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MT-CO1	ENST00000361624.2	TSL:6	c.1470A>G	p.Met490Met	synonymous	Exon 1 of 1	ENSP00000354499.2
	MT-CO2	ENST00000361739.1	TSL:6	c.-213A>G		upstream_gene	N/A	ENSP00000354876.1
	MT-TD	ENST00000387419.1	TSL:6	n.-145A>G		upstream_gene	N/A

Frequencies

Mitomap GenBank AF: 0.0 AC: 1

Gnomad homoplasmic AF: 0.000018 AC: 1 AN: 56432

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56432

Mitomap

No disease associated.

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Optic atrophy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.59	T
PhyloP100		-10
GERP RS		-11
Varity_R		0.26
Mutation Taster		=61/39	polymorphism

Other links and lift over

dbSNP: rs1057516060; hg19: chrM-7374;