M-8557-G-C

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4 BP6_Moderate BS2

The ENST00000361899.2(MT-ATP6):c.31G>C(p.Ala11Pro) variant causes a missense 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 Likely benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A11T) has been classified as Likely benign.

• Frequency: Mitomap GenBank: 𝑓 0.00040 (AC: 25)
• Consequence: MT-ATP6 ENST00000361899.2 missense
• Scores: Apogee2 Benign 0.049
• Clinical Significance: Likely benign criteria provided, single submitter B:1 No linked disesase in Mitomap
• Conservation: PhyloP100: 0.867

Genes affected

ATP6 (HGNC:):

MT-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]

MT-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]

ACMG classification

Verdict is Benign. Variant got -7 ACMG points.

• BP4: Apogee2 supports a benign effect, 0.04850923 < 0.5 .
• BP6: Variant M-8557-G-C is Benign according to our data. Variant chrM-8557-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 692901.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomadMitoHomoplasmic at 7

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATP6	ATP6.1	c.31G>C	p.Ala11Pro	missense_variant	1/1
ATP8	ATP8.1	c.192G>C	p.Leu64Phe	missense_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MT-ATP6	ENST00000361899.2	c.31G>C	p.Ala11Pro	missense_variant	1/1			P1
MT-ATP8	ENST00000361851.1	c.192G>C	p.Leu64Phe	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: 0.00040 AC: 25

Gnomad homoplasmic AF: 0.00012 AC: 7 AN: 56421

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56421

Alfa AF: 0.000223 Hom.: 59

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.8557G>C (YP_003024031.1:p.Ala11Pro) variant in MTATP6 gene (also (YP_003024030.1:p.Leu64Phe) variant in MTATP8 gene) is interpretated to be a Likely Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: BS1, BP6 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.049
Hmtvar	Pathogenic	0.67
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.097	T
DEOGEN2	Benign	0.027	T
LIST_S2	Benign	0.073	T
MutationTaster	Benign	1.0	N;N
PROVEAN	Benign	-1.8	N
Sift4G	Uncertain	0.019	D
GERP RS		-3.4
Varity_R		0.35

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs386829040; hg19: chrM-8558;