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SLC19A3

Chr 2q36.3

solute carrier family 19 member 3

Aliases:
THTR2, thTr-2, hTHTR2
MANE:
ENST00000644224.2

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult onset dystonia, chorea or related movement disorder

    BIALLELIC, autosomal or pseudoautosomal
  • Childhood onset dystonia, chorea or related movement disorder

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Mitochondrial disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Possible mitochondrial disorder - nuclear genes

    BIALLELIC, autosomal or pseudoautosomal
  • Pyruvate dehydrogenase (PDH) deficiency

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • biotin-responsive basal ganglia disease

    0.82
  • Thiamine-responsive encephalopathy

    0.77
  • hereditary disease

    0.49
  • Leigh syndrome

    0.37
  • Dystonia

    0.37
  • Infantile spams - psychomotor retardation - progressive brain atrophy - basal ganglia disease

    0.37
  • infantile spams-psychomotor retardation-progressive brain atrophy-basal ganglia disease syndrome

    0.37
  • neurodegenerative disease

    0.35
  • peritonitis

    0.27
  • Spastic paraplegia

    0.12

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Thiamine transporter 2

Mediates high affinity thiamine uptake, probably via a proton anti-port mechanism (PubMed:11731220, PubMed:33008889, PubMed:35512554, PubMed:35724964). Has no folate transport activity (PubMed:11731220). Mediates H(+)-dependent pyridoxine transport (PubMed:33008889, PubMed:35512554, PubMed:35724964, PubMed:36456177)

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.