M-6734-G-A

Position:

• chrM-6734-G-A

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP6_Very_Strong BP7 BS1 BS2

The ENST00000361624.2(MT-CO1):​c.831G>A​(p.Met277=) 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 Benign (★★).

• Frequency: Mitomap GenBank: 𝑓 0.0070 (AC: 426)
• Consequence: MT-CO1 ENST00000361624.2 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2 No linked disesase in Mitomap
• Conservation: PhyloP100: -1.05

Genes affected

COX1 (HGNC:):

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]

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP6: Variant M-6734-G-A is Benign according to our data. Variant chrM-6734-G-A is described in ClinVar as [Benign]. Clinvar id is 235522.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.05 with no splicing effect.
• BS1: High frequency in mitomap database: 0.0069999998
• BS2: High AC in GnomadMitoHomoplasmic at 481

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COX1	COX1.1	c.831G>A	p.Met277=	synonymous_variant	1/1		YP_003024028.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MT-CO1	ENST00000361624.2	c.831G>A	p.Met277=	synonymous_variant	1/1			ENSP00000354499	P1

Frequencies

GnomAD4 exome Cov.: 0

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

Mitomap GenBank AF: 0.0070 AC: 426

Gnomad homoplasmic AF: 0.0085 AC: 481 AN: 56419

Gnomad heteroplasmic AF: 0.00011 AC: 6 AN: 56419

Alfa AF: 0.0103 Hom.: 386

Mitomap

No disease associated.

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jul 25, 2019	- -
Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Oct 13, 2014	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.50	T
DEOGEN2	Benign	0.11	T
LIST_S2	Pathogenic	0.98	D
MutationAssessor	Benign	1.9	L
MutationTaster	Benign	1.0	D
PROVEAN	Uncertain	-2.8	D
GERP RS		-2.5
Varity_R		0.66

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs41413745; hg19: chrM-6735;