chrM-4219-G-A

Variant names:

• chrM-4219-G-A
• rs878853008
• ENST00000361390.2:c.913G>A

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4 BP6_Very_Strong BS2

The ENST00000361390.2(MT-ND1):​c.913G>A​(p.Val305Ile) 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 Likely benign (★★).

• Frequency: Mitomap GenBank: 𝑓 0.00080 (AC: 49)
• Consequence: MT-ND1 ENST00000361390.2 missense
• Scores: Apogee2 Benign 0.018
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2 No linked disesase in Mitomap
• Conservation: PhyloP100: 0.0660
• Publications: 3 publications found

Genes affected

MT-ND1 (HGNC:7455): (mitochondrially encoded NADH dehydrogenase 1) Enables NADH dehydrogenase (ubiquinone) activity. Involved in mitochondrial electron transport, NADH to ubiquinone and mitochondrial respiratory chain complex I assembly. Located in mitochondrial membrane. Part of mitochondrial respiratory chain complex I. Implicated in several diseases, including MELAS syndrome; neurodegenerative disease (multiple); optic nerve disease (multiple); toxic shock syndrome; and type 2 diabetes mellitus. Biomarker of Alzheimer's disease; Parkinson's disease; and multiple sclerosis. [provided by Alliance of Genome Resources, Apr 2022]

TRNI (HGNC:7488): (mitochondrially encoded tRNA isoleucine)

TRNM (HGNC:7492): (mitochondrially encoded tRNA methionine)

TRNQ (HGNC:7495): (mitochondrially encoded tRNA glutamine)

TRNQ Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: Mitochondrial Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -13 ACMG points.

• BP4: Apogee2 supports a benign effect, 0.017860007 < 0.5 .
• BP6: Variant M-4219-G-A is Benign according to our data. Variant chrM-4219-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 235315.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS2: High AC in GnomadMitoHomoplasmic at 57

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000361390.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MT-ND1	ENST00000361390.2	TSL:6	c.913G>A	p.Val305Ile	missense	Exon 1 of 1	ENSP00000354687.2
	MT-TI	ENST00000387365.1	TSL:6	n.-44G>A		upstream_gene	N/A
	MT-TM	ENST00000387377.1	TSL:6	n.-183G>A		upstream_gene	N/A

Frequencies

Mitomap GenBank AF: 0.00080 AC: 49

Gnomad homoplasmic AF: 0.0010 AC: 57 AN: 56416

Gnomad heteroplasmic AF: 0.000053 AC: 3 AN: 56416

Alfa AF: 0.000897 Hom.: 3

Mitomap

No disease associated.

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

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.4219G>A (YP_003024026.1:p.Val305Ile) variant in MTND1 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

not provided Benign:1

Aug 12, 2015

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.018
Hmtvar	Benign	0.080
AlphaMissense	Benign	0.078
BayesDel_addAF	Benign	-0.59	T
DEOGEN2	Benign	0.0078	T
LIST_S2	Benign	0.54	T
MutationAssessor	Benign	-1.2	N
PhyloP100		0.066
PROVEAN	Benign	0.24	N
Sift4G	Benign	1.0	T
GERP RS		-2.0
Varity_R		0.29
Mutation Taster		=95/5	polymorphism

Other links and lift over

dbSNP: rs878853008; hg19: chrM-4220;