M-14207-G-A

Variant names:

• chrM-14207-G-A
• rs879217937
• unassigned_transcript_4816:c.467C>T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP6_Moderate BS2

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

• Frequency: Mitomap GenBank: 𝑓 0.00070 (AC: 40)
• Consequence: ND6 missense
• Scores: Apogee2 Benign 0.28
• Clinical Significance: Benign criteria provided, single submitter B:1 No linked disesase in Mitomap
• Conservation: PhyloP100: 0.922

Genes affected

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]

ND5 (HGNC:7461): (mitochondrially encoded NADH dehydrogenase 5) Enables NADH dehydrogenase (ubiquinone) activity. Involved in mitochondrial electron transport, NADH to ubiquinone and mitochondrial respiratory chain complex I assembly. Part of mitochondrial respiratory chain complex I. Implicated in Leber hereditary optic neuropathy; Leigh disease; and MELAS syndrome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP6: Variant M-14207-G-A is Benign according to our data. Variant chrM-14207-G-A is described in ClinVar as [Benign]. Clinvar id is 693690.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomadMitoHomoplasmic at 21

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ND6	unassigned_transcript_4816	c.467C>T	p.Thr156Ile	missense_variant	Exon 1 of 1
ND5	unassigned_transcript_4815	c.*59G>A		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: 0.00070 AC: 40

Gnomad homoplasmic AF: 0.00037 AC: 21 AN: 56400

Gnomad heteroplasmic AF: 0.00028 AC: 16 AN: 56400

Alfa AF: 0.000890 Hom.: 3

Mitomap

No disease associated.

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.14207G>A (YP_003024037.1:p.Thr156Ile) variant in MTND6 gene is interpretated to be a Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: BS1, BS2, BP4 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.28
Hmtvar	Pathogenic	0.39
AlphaMissense	Pathogenic	0.64
BayesDel_addAF	Benign	-0.27	T
DEOGEN2	Uncertain	0.54	D
LIST_S2	Benign	0.65	T
MutationAssessor	Benign	1.5	L
PROVEAN	Uncertain	-3.3	D
Sift	Uncertain	0.0070	D
Sift4G	Uncertain	0.050	T
GERP RS		3.2
Varity_R		0.20

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs879217937; hg19: chrM-14208;