rs199476131

Variant names:

• chrM-5692-T-C
• rs199476131
• unassigned_transcript_4796:c.38A>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP5

The ENST00000000000(TRNN):​c.38A>G​(p.Asn13Ser) variant causes a missense change. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Mitomap GenBank: Absent
• Consequence: TRNN ENST00000000000 missense
• Scores: Mitotip Uncertain 12
• Clinical Significance: Pathogenic no assertion criteria provided P:1 CPEO-/-MM
• Conservation: PhyloP100: 4.83
• Publications: 2 publications found

Genes affected

TRNN (HGNC:7493): (mitochondrially encoded tRNA asparagine)

MT-CO1 (HGNC:7419): (mitochondrially encoded cytochrome c oxidase I) Contributes to cytochrome-c oxidase activity. Predicted to be involved in electron transport coupled proton transport and mitochondrial electron transport, cytochrome c to oxygen. Part of mitochondrial respiratory chain complex III and mitochondrial respiratory chain complex IV. [provided by Alliance of Genome Resources, Apr 2022]

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]

TRNA (HGNC:7475): (mitochondrially encoded tRNA alanine)

TRNW (HGNC:7501): (mitochondrially encoded tRNA tryptophan)

TRNC (HGNC:7477): (mitochondrially encoded tRNA cysteine)

TRNY (HGNC:7502): (mitochondrially encoded tRNA tyrosine)

TRNY Gene-Disease associations (from GenCC):

• mitochondrial disease

  Inheritance: Mitochondrial Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: No frequency data in Mitomap. Probably very rare.
• PP5: Variant M-5692-T-C is Pathogenic according to our data. Variant chrM-5692-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 9621.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRNN	unassigned_transcript_4796	c.38A>G	p.Asn13Ser	missense_variant	Exon 1 of 1
COX1	unassigned_transcript_4799	c.-212T>C		upstream_gene_variant
TRNA	unassigned_transcript_4795	c.-37A>G		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MT-CO1	ENST00000361624.2	c.-212T>C		upstream_gene_variant		6		ENSP00000354499.2
MT-ND2	ENST00000361453.3	c.*181T>C		downstream_gene_variant		6		ENSP00000355046.4

Frequencies

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

Alfa AF: 0.00 Hom.: 0

Mitomap

Disease(s): CPEO-/-MM

Status: Reported

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Ophthalmoplegia, isolated Pathogenic:1

Oct 28, 1994

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Mitotip	Uncertain	12
Hmtvar	Pathogenic	0.85
PhyloP100		4.8

Other links and lift over

dbSNP: rs199476131; hg19: chrM-5693;