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Mitochondrial disorders

Gene: TK2

Green List (high evidence)

TK2 (thymidine kinase 2, mitochondrial)
EnsemblGeneIds (GRCh38): ENSG00000166548
EnsemblGeneIds (GRCh37): ENSG00000166548
OMIM: 188250, Gene2Phenotype
TK2 is in 15 panels

2 reviews

Carl Fratter (Oxford University Hospitals NHS Trust)

Green List (high evidence)

Variants in this GENE are reported as part of current diagnostic practice

Shamima Rahman (UCL Institute of Child Health)

Green List (high evidence)

Details

Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
Sources
  • Victorian Clinical Genetics Services
  • UKGTN
  • Illumina TruGenome Clinical Sequencing Services
  • Radboud University Medical Center, Nijmegen
  • Expert list
  • Expert
Phenotypes
  • Mitochondrial DNA depletion syndrome 2 (myopathic type), OMIM:609560
  • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal recessive 3, OMIM:617069
OMIM
188250
Clinvar variants
Variants in TK2
Penetrance
Complete
Panels with this gene

History Filter Activity

29 Dec 2025, Gel status: 3

Set Phenotypes

Arina Puzriakova (Genomics England Curator)

Phenotypes for gene: TK2 were changed from Disorders of mitochondrial DNA maintenance and integrity; Mitochondrial DNA depletion syndrome 2 (myopathic type), 609560; Mitochondrial DNA Depletion Syndrome to Mitochondrial DNA depletion syndrome 2 (myopathic type), OMIM:609560; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal recessive 3, OMIM:617069

28 Aug 2018, Gel status: 3

Added New Source

Sarah Leigh (Genomics England Curator)

Victorian Clinical Genetics Services was added to TK2. Panel: Mitochondrial disorders

30 Jun 2015, Gel status: 3

Set Mode of Inheritance

Ellen McDonagh (Genomics England Curator)

Model of inheritance for gene TK2 was changed to BIALLELIC, autosomal or pseudoautosomal

30 Jun 2015, Gel status: 3

Added New Source

Ellen McDonagh (Genomics England Curator)

TK2 was added to All recognised syndromes and those with suggestive featurespanel. Sources: Expert,Expert list,Radboud University Medical Center, Nijmegen,Illumina TruGenome Clinical Sequencing Services,UKGTN

30 Jun 2015, Gel status: 2

Set Mode of Inheritance

Ellen McDonagh (Genomics England Curator)

Model of inheritance for gene TK2 was changed to BIALLELIC, autosomal or pseudoautosomal

30 Jun 2015, Gel status: 2

Added New Source

Ellen McDonagh (Genomics England Curator)

TK2 was added to All recognised syndromes and those with suggestive featurespanel. Sources: Expert,Expert list,Radboud University Medical Center, Nijmegen,Illumina TruGenome Clinical Sequencing Services,UKGTN

30 Jun 2015, Gel status: 1

Set Mode of Inheritance

Ellen McDonagh (Genomics England Curator)

Model of inheritance for gene TK2 was changed to BIALLELIC, autosomal or pseudoautosomal

30 Jun 2015, Gel status: 1

Added New Source

Ellen McDonagh (Genomics England Curator)

TK2 was added to All recognised syndromes and those with suggestive featurespanel. Sources: Expert,Expert list,Radboud University Medical Center, Nijmegen,Illumina TruGenome Clinical Sequencing Services,UKGTN

30 Jun 2015, Gel status: 0

Set Mode of Inheritance

Ellen McDonagh (Genomics England Curator)

Model of inheritance for gene TK2 was changed to BIALLELIC, autosomal or pseudoautosomal

30 Jun 2015, Gel status: 0

Added New Source

Ellen McDonagh (Genomics England Curator)

TK2 was added to All recognised syndromes and those with suggestive featurespanel. Sources: Expert,Expert list,Radboud University Medical Center, Nijmegen,Illumina TruGenome Clinical Sequencing Services,UKGTN

30 Jun 2015, Gel status: 0

Added New Source

Ellen McDonagh (Genomics England Curator)

TK2 was added to All recognised syndromes and those with suggestive featurespanel. Sources: Expert,Expert list,Radboud University Medical Center, Nijmegen,Illumina TruGenome Clinical Sequencing Services,UKGTN