M-12346-C-T

Position:

• chrM-12346-C-T

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4 BP6_Very_Strong BS1 BS2

The ENST00000361567.2(MT-ND5):​c.10C>T​(p.His4Tyr) 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 0.0071 (AC: 432)
• Consequence: MT-ND5 ENST00000361567.2 missense
• Scores: Apogee2 Benign 0.0016
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2 No linked disesase in Mitomap
• Conservation: PhyloP100: -3.18

Genes affected

MT-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]

MT-TL2 (HGNC:7491): (mitochondrially encoded tRNA leucine 2 (CUN))

TRNL2 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Apogee2 supports a benign effect, 0.0015835421 < 0.5 .
• BP6: Variant M-12346-C-T is Benign according to our data. Variant chrM-12346-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 445363.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: High frequency in mitomap database: 0.0070999996
• BS2: High AC in GnomadMitoHomoplasmic at 202

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRNL2	TRNL2.1			downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MT-ND5	ENST00000361567.2	c.10C>T	p.His4Tyr	missense_variant	1/1			P1
MT-TL2	ENST00000387456.1			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: 0.0071 AC: 432

Gnomad homoplasmic AF: 0.0036 AC: 202 AN: 56434

Gnomad heteroplasmic AF: 0.000053 AC: 3 AN: 56434

Alfa AF: 0.00601 Hom.: 27

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

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.12346C>T (YP_003024036.1:p.His4Tyr) variant in MTND5 gene is interpretated to be a Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes: BA1 -

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

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

Apr 03, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Apogee2	Benign	0.0016
Hmtvar	Benign	0.18
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.54	T
DEOGEN2	Benign	0.0034	T
LIST_S2	Benign	0.77	T
MutationAssessor	Benign	-1.1	N
MutationTaster	Benign	1.0	N
PROVEAN	Benign	1.4	N
Sift4G	Benign	1.0	T
GERP RS		-1.9
Varity_R		0.25

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs200279497; hg19: chrM-12347;