M-8414-C-T

Variant names:

• chrM-8414-C-T
• rs28358884
• unassigned_transcript_4804:c.49C>T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BA1

In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Mitomap GenBank: 𝑓 0.038 (AC: 2307)
• Consequence: ATP8 missense
• Scores: Apogee2 Benign 0.062
• Clinical Significance: Benign criteria provided, single submitter B:1 Increased-risk-of-T2DM-and-high-altitude-polycythemia-(HAPC)-in-haplogroup-D4-/-Longevity
• Conservation: PhyloP100: -0.243

Genes affected

ATP8 (HGNC:7415): (mitochondrially encoded ATP synthase 8) Contributes to proton-transporting ATP synthase activity, rotational mechanism. Involved in mitochondrial ATP synthesis coupled proton transport. Part of mitochondrial proton-transporting ATP synthase complex. Implicated in multiple sclerosis and urinary bladder cancer. [provided by Alliance of Genome Resources, Apr 2022]

ATP6 (HGNC:7414): (mitochondrially encoded ATP synthase 6) Contributes to proton-transporting ATP synthase activity, rotational mechanism. Involved in mitochondrial ATP synthesis coupled proton transport. Part of mitochondrial proton-transporting ATP synthase complex. Implicated in Leber hereditary optic neuropathy; NARP syndrome; Parkinson's disease; multiple sclerosis; and systemic lupus erythematosus. [provided by Alliance of Genome Resources, Apr 2022]

COX2 (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]

TRNK (HGNC:7489): (mitochondrially encoded tRNA lysine)

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant M-8414-C-T is Benign according to our data. Variant chrM-8414-C-T is described in ClinVar as [Benign]. Clinvar id is 692850.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: High frequency in mitomap database: 0.0377

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ATP8	unassigned_transcript_4804	c.49C>T	p.Leu17Phe	missense_variant	Exon 1 of 1
ATP6	unassigned_transcript_4805	c.-113C>T		upstream_gene_variant
COX2	unassigned_transcript_4802	c.*145C>T		downstream_gene_variant
TRNK	unassigned_transcript_4803	c.*50C>T		downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt

Frequencies

GnomAD4 exome Cov.: 0

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

Mitomap GenBank AF: 0.038 AC: 2307

Gnomad homoplasmic AF: 0.0090 AC: 507 AN: 56433

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56433

Alfa AF: 0.00995 Hom.: 392

Mitomap

Increased-risk-of-T2DM-and-high-altitude-polycythemia-(HAPC)-in-haplogroup-D4-/-Longevity

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leigh syndrome Benign:1

Oct 17, 2019

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

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The NC_012920.1:m.8414C>T (YP_003024030.1:p.Leu17Phe) variant in MTATP8 gene is interpretated to be a Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: BA1 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.062
Hmtvar	Pathogenic	0.71
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.44	T
DEOGEN2	Benign	0.032	T
LIST_S2	Benign	0.69	T
PROVEAN	Benign	-2.0	N
Sift	Benign	0.44	T
Sift4G	Benign	0.15	T
GERP RS		-9.6
Varity_R		0.23

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs28358884; hg19: chrM-8415;