M-6052-A-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2 BP4 BP6_Moderate BS2

The ENST00000361624.2(MT-CO1):c.149A>G(p.Asn50Ser) variant causes a missense change. In-silico tool predicts a benign outcome for this variant. 8/11 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Mitomap GenBank: 𝑓 0.0 (AC: 2)
• Consequence: MT-CO1 ENST00000361624.2 missense
• Scores: Apogee2 Benign 0.064
• Clinical Significance: Likely benign criteria provided, single submitter B:1 No linked disesase in Mitomap
• Conservation: PhyloP100: 5.93

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 Likely_benign. Variant got -5 ACMG points.

• PM2: Very low frequency in mitomap database: 0.0
• BP4: Apogee2 supports a benign effect, 0.063571475 < 0.5 .
• BP6: Variant M-6052-A-G is Benign according to our data. Variant chrM-6052-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 692611.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomadMitoHomoplasmic at 8

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COX1	COX1.1	c.149A>G	p.Asn50Ser	missense_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MT-CO1	ENST00000361624.2	c.149A>G	p.Asn50Ser	missense_variant	1/1			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: 0.0 AC: 2

Gnomad homoplasmic AF: 0.00014 AC: 8 AN: 56432

Gnomad heteroplasmic AF: 0.000035 AC: 2 AN: 56432

Mitomap

No disease associated.

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leigh syndrome Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine

Oct 17, 2019

The NC_012920.1:m.6052A>G (YP_003024028.1:p.Asn50Ser) variant in MTCO1 gene is interpretated to be a Likely Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: BS4, BP4, BP6 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.064
Hmtvar	Benign	0.19
AlphaMissense	Benign	0.087
BayesDel_addAF	Benign	-0.56	T
DEOGEN2	Benign	0.023	T
LIST_S2	Pathogenic	0.98	D
MutationAssessor	Benign	0.98	L
MutationTaster	Benign	0.74	N
PROVEAN	Benign	-0.98	N
Sift4G	Uncertain	0.047	D
GERP RS		5.1
Varity_R		0.24

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1603220245; hg19: chrM-6053;