rs1556423388

Variant names:

• chrM-8086-AT-A
• rs1556423388
• unassigned_transcript_4802:c.503delT

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP5

Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Mitomap GenBank: Absent
• Consequence: COX2 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1 Mitochondrial-myopathy-with-complex-IV-deficiency
• Conservation: PhyloP100: -1.67

Genes affected

COX2 (HGNC:7421): (mitochondrially encoded cytochrome c oxidase II) Contributes to cytochrome-c oxidase activity. Predicted to be involved in mitochondrial electron transport, cytochrome c to oxygen and positive regulation of vasoconstriction. Located in mitochondrial inner membrane. Part of respiratory chain complex IV. Biomarker of Huntington's disease and stomach cancer. [provided by Alliance of Genome Resources, Apr 2022]

TRNK (HGNC:7489): (mitochondrially encoded tRNA lysine)

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: No frequency data in Mitomap. Probably very rare.
• PP5: Variant M-8086-AT-A is Pathogenic according to our data. Variant chrM-8086-AT-A is described in ClinVar as [Pathogenic]. Clinvar id is 488349.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COX2	unassigned_transcript_4802	c.503delT	p.Leu168fs	frameshift_variant	Exon 1 of 1
TRNK	unassigned_transcript_4803	c.-208delT		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt

Frequencies

GnomAD4 exome Cov.: 0

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

Mitomap

Mitochondrial-myopathy-with-complex-IV-deficiency

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Mitochondrial complex IV deficiency, nuclear type 1 Pathogenic:1

Jan 11, 2018

Department of Pathology and Genetics, University of Gothenburg

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1556423388; hg19: chrM-8087;