Genes in panel

Likely inborn error of metabolism - targeted testing not possible

Gene: TKFC

Amber List (moderate evidence)

TKFC (triokinase and FMN cyclase)
EnsemblGeneIds (GRCh38): ENSG00000149476
EnsemblGeneIds (GRCh37): ENSG00000149476
OMIM: 615844, Gene2Phenotype
TKFC is in 4 panels

1 review

Arina Puzriakova (Genomics England Curator)

I don't know

Comment on list classification: Additional cases required before inclusion on a diagnostic panel (added to watchlist).
Created: 27 Aug 2020, 4:10 p.m. | Last Modified: 27 Aug 2020, 4:10 p.m.
Panel Version: 2.17
Associated with phenotype in OMIM, and a possible gene for TKFC-related Cataracts and Multisystem Disease in G2P.

PMID: 32004446 (2020) - Two sib pairs from two unrelated consanguineous families with an inborn error of metabolism caused by distinct homozygous variants in TKFC. In Family 1, both sibs had congenital cataracts but otherwise presented disparate phenotypes. The older sister had DD (motor and speech) and cerebellar hypoplasia; while the younger sister had liver dysfunction and fatal cardiomyopathy at 11 weeks with severe lactic acidosis following a febrile illness. In Family 2, the brother exhibited global DD as well as bilateral cataracts at 22 months. He developed progressive non-cholestatic liver failure, and at 3yrs-10months he could not walk independently and had no words. His older sister, had delayed speech development and learning difficulties, but is otherwise well and did not have cataracts.

Both variants segregated with disease in each family, and some functional data of the variants using yeast cells.
Sources: Literature
Created: 27 Aug 2020, 4:09 p.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Triokinase and FMN cyclase deficiency syndrome, 618805



Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
  • Expert Review Amber
  • Literature
  • Triokinase and FMN cyclase deficiency syndrome, 618805
Clinvar variants
Variants in TKFC
Panels with this gene

History Filter Activity

27 Aug 2020, Gel status: 2

Entity classified by Genomics England curator

Arina Puzriakova (Genomics England Curator)

Gene: tkfc has been classified as Amber List (Moderate Evidence).

27 Aug 2020, Gel status: 1

Created, Added New Source, Added Tag, Set mode of inheritance, Set publications, Set Phenotypes

Arina Puzriakova (Genomics England Curator)

gene: TKFC was added gene: TKFC was added to Inborn errors of metabolism. Sources: Literature watchlist tags were added to gene: TKFC. Mode of inheritance for gene: TKFC was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: TKFC were set to 32004446 Phenotypes for gene: TKFC were set to Triokinase and FMN cyclase deficiency syndrome, 618805 Review for gene: TKFC was set to AMBER