M-7671-T-A

Position:

• chrM-7671-T-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PS1_Moderate PM2 PP3 PP5

The ENST00000361739.1(MT-CO2):​c.86T>A​(p.Met29Lys) variant causes a missense change. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely pathogenicin UniProt.

• Frequency: Mitomap GenBank: Absent
• Consequence: MT-CO2 ENST00000361739.1 missense
• Scores: Apogee2 Pathogenic 0.94
• Clinical Significance: Pathogenic no assertion criteria provided P:1 MM
• Conservation: PhyloP100: 4.82

Genes affected

COX2 (HGNC:):

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PS1: Transcript ENST00000361739.1 (MT-CO2) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt
• PM2: No frequency data in Mitomap. Probably very rare.
• PP3: Apogee2 supports a deletorius effect, 0.9424373 >= 0.5 .
• PP5: Variant M-7671-T-A is Pathogenic according to our data. Variant chrM-7671-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 9660.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COX2	COX2.1	c.86T>A	p.Met29Lys	missense_variant	1/1		YP_003024029.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MT-CO2	ENST00000361739.1	c.86T>A	p.Met29Lys	missense_variant	1/1			ENSP00000354876	P1

Frequencies

GnomAD4 exome Cov.: 0

We have no GnomAD4 genomes data on this position. Probably position not covered by the project.

Mitomap

MM

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Mitochondrial complex IV deficiency, nuclear type 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Oct 01, 1999

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Pathogenic	0.94
Hmtvar	Pathogenic	0.86
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Uncertain	0.040	T
MutationTaster	Benign	1.0	A
GERP RS		5.2
Varity_R		0.41

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs199474827; hg19: chrM-7672;