M-4491-G-A

Position:

• chrM-4491-G-A

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4 BP6_Moderate BA1

The ENST00000361453.3(MT-ND2):​c.22G>A​(p.Val8Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 8/11 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Mitomap GenBank: 𝑓 0.016 (AC: 959)
• Consequence: MT-ND2 ENST00000361453.3 missense
• Scores: Apogee2 Benign 0.011
• Clinical Significance: Benign criteria provided, single submitter B:1 High-altitude-pulmonary-edema-susceptibility
• Conservation: PhyloP100: 0.139

Genes affected

MT-ND2 (HGNC:7456): (mitochondrially encoded NADH dehydrogenase 2) 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; multiple sclerosis; myocardial infarction; neurodegenerative disease (multiple); and urinary bladder cancer. [provided by Alliance of Genome Resources, Apr 2022]

MT-TM (HGNC:7492): (mitochondrially encoded tRNA methionine)

TRNM (HGNC:):

ACMG classification

Verdict is Benign. Variant got -11 ACMG points.

• BP4: Apogee2 supports a benign effect, 0.0105777 < 0.5 .
• BP6: Variant M-4491-G-A is Benign according to our data. Variant chrM-4491-G-A is described in ClinVar as [Benign]. Clinvar id is 692448.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: High frequency in mitomap database: 0.015700001

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRNM	TRNM.1			downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MT-ND2	ENST00000361453.3	c.22G>A	p.Val8Ile	missense_variant	1/1			P1
MT-TM	ENST00000387377.1			downstream_gene_variant

Frequencies

GnomAD4 exome Cov.: 0

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

Mitomap GenBank AF: 0.016 AC: 959

Gnomad homoplasmic AF: 0.0030 AC: 168 AN: 56418

Gnomad heteroplasmic AF: 0.00011 AC: 6 AN: 56418

Alfa AF: 0.00827 Hom.: 37

Mitomap

High-altitude-pulmonary-edema-susceptibility

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Leigh syndrome Benign:1

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.4491G>A (YP_003024027.1:p.Val8Ile) variant in MTND2 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	0.011
Hmtvar	Benign	0.090
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.62	T
DEOGEN2	Benign	0.013	T
LIST_S2	Benign	0.50	T
MutationAssessor	Benign	-0.39	N
MutationTaster	Benign	1.0	N
PROVEAN	Benign	0.070	N
Sift4G	Benign	1.0	T
GERP RS		-2.7
Varity_R		0.096

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs201172504; hg19: chrM-4492; COSMIC: COSV104670682; COSMIC: COSV104670682;