rs386829033

Variant names:

• chrM-8392-G-A
• rs121434446
• ENST00000361851.1:c.27G>A
• MT-ATP8 p.Trp9Trp

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP7 BS1 BS2

The ENST00000361851.1(MT-ATP8):​c.27G>A​(p.Trp9Trp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Mitomap GenBank: 𝑓 0.0071 (AC: 431)
• Consequence: MT-ATP8 ENST00000361851.1 synonymous
• Clinical Significance: Not reported in ClinVar No linked disesase in Mitomap
• Conservation: PhyloP100: 2.89
• Publications: 10 publications found

Genes affected

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]

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-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]

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

TRNK Gene-Disease associations (from GenCC):

• Leigh syndrome

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen
• mitochondrial disease

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen
• maternally-inherited cardiomyopathy and hearing loss

  Inheritance: Mitochondrial Classification: SUPPORTIVE Submitted by: Orphanet
• MERRF syndrome

  Inheritance: Mitochondrial Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -9 ACMG points.

• BP7: Synonymous conserved (PhyloP=2.89 with no splicing effect.
• BS1: High frequency in mitomap database: 0.0070999996
• BS2: High AC in GnomadMitoHomoplasmic at 63

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000361851.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MT-ATP8	ENST00000361851.1	TSL:6	c.27G>A	p.Trp9Trp	synonymous	Exon 1 of 1	ENSP00000355265.1	P03928
	MT-ATP6	ENST00000361899.2	TSL:6	c.-135G>A		upstream_gene	N/A	ENSP00000354632.2	P00846
	MT-CO2	ENST00000361739.1	TSL:6	c.*123G>A		downstream_gene	N/A	ENSP00000354876.1	P00403

Frequencies

Mitomap GenBank AF: 0.0071 AC: 431

Gnomad homoplasmic AF: 0.0011 AC: 63 AN: 56406

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56406

Alfa AF: 0.000445 Hom.: 2

Mitomap

No disease associated.

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.42	T
PhyloP100		2.9
Mutation Taster		=87/13	polymorphism

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs121434446;

hg19: chrM-8393;