M-14210-A-G

Position:

• chrM-14210-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The ENST00000361681.2(MT-ND6):​c.464T>C​(p.Val155Ala) variant causes a missense change. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V155I) has been classified as Benign.

• Frequency: Mitomap GenBank: 𝑓 0.0 (AC: 2)
• Consequence: MT-ND6 ENST00000361681.2 missense
• Scores: Apogee2 Benign 0.22
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1 No linked disesase in Mitomap
• Conservation: PhyloP100: 6.72

Genes affected

MT-ND6 (HGNC:7462): (mitochondrially encoded NADH dehydrogenase 6) Enables NADH dehydrogenase (ubiquinone) activity. Involved in mitochondrial electron transport, NADH to ubiquinone and mitochondrial respiratory chain complex I assembly. Predicted to be located in mitochondrial inner membrane. Implicated in Leber hereditary optic neuropathy; Leigh disease; and spinal muscular atrophy with lower extremity predominante 2B. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very low frequency in mitomap database: 0.0
• BP4: Apogee2 supports a benign effect, 0.2169459 < 0.5 .

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MT-ND6	ENST00000361681.2	c.464T>C	p.Val155Ala	missense_variant	1/1			ENSP00000354665	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: 0.000018 AC: 1 AN: 56427

Gnomad heteroplasmic AF: 0.000018 AC: 1 AN: 56427

Alfa AF: 0.000223 Hom.: 1

Mitomap

No disease associated.

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leigh syndrome Uncertain:1

Uncertain significance, 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.14210A>G (YP_003024037.1:p.Val155Ala) variant in MTND6 gene is interpretated to be a Uncertain Significance variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: PP4 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.22
Hmtvar	Pathogenic	0.81
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Uncertain	0.016	T
DEOGEN2	Uncertain	0.57	D
LIST_S2	Benign	0.62	T
MutationAssessor	Benign	1.9	L
PROVEAN	Uncertain	-3.6	D
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.052	T
GERP RS		4.0
Varity_R		0.36

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1603224604; hg19: chrM-14211;