chrM-1644-G-T

Variant names:

• chrM-1644-G-T
• rs587776441
• unassigned_transcript_4786:c.43G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The ENST00000000000(TRNV):​c.43G>T​(p.Asp15Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as not provided (no stars).

• Frequency: Mitomap GenBank: Absent
• Consequence: TRNV ENST00000000000 missense
• Scores: Mitotip Uncertain 13
• Clinical Significance: not provided no classification provided O:1 Leigh-Syndrome-/-HCM-/-MELAS,Adult-Leigh-Syndrome
• Conservation: PhyloP100: 0.980
• Publications: 0 publications found

Genes affected

TRNV (HGNC:7500): (mitochondrially encoded tRNA valine)

MT-RNR2 (HGNC:7471): (mitochondrially encoded 16S RNA) Enables G protein-coupled receptor binding activity; protein self-association; and receptor antagonist activity. Involved in several processes, including leukocyte chemotaxis; negative regulation of cell death; and negative regulation of neuroinflammatory response. Located in several cellular components, including mitochondrion; perinuclear region of cytoplasm; and sperm midpiece. [provided by Alliance of Genome Resources, Apr 2022]

MT-RNR1 (HGNC:7470): (mitochondrially encoded 12S RNA) Enables DNA binding activity and DNA-binding transcription factor binding activity. Involved in several processes, including osteoblast proliferation; regulation of carbohydrate utilization; and regulation of phosphate metabolic process. Located in extracellular space; mitochondrion; and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MT-RNR1 Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: No frequency data in Mitomap. Probably very rare.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000387342.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MT-TV	ENST00000387342.1	TSL:6	n.43G>T		non_coding_transcript_exon	Exon 1 of 1
	MT-RNR2	ENST00000387347.2	TSL:6	n.-27G>T		upstream_gene	N/A
	MT-RNR1	ENST00000389680.2	TSL:6	n.*43G>T		downstream_gene	N/A

Frequencies

Mitomap GenBank The variant is not present, suggesting it is rare .

Mitomap

Disease(s): Leigh-Syndrome-/-HCM-/-MELAS,Adult-Leigh-Syndrome

Status: Cfrm-[LP],Reported

ClinVar

ClinVar submissions

Significance: not provided

Revision: no classification provided

Pathogenic	VUS	Benign	Condition
-	-	-	Leigh syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
Mitotip	Uncertain	13
Hmtvar	Benign	0.35
PhyloP100		0.98

Other links and lift over

dbSNP: rs587776441; hg19: chrM-1646;