Skip to content
GenoLensGenoLens

EXT2

Chr 11p11.2

exostosin glycosyltransferase 2

Aliases:
SOTV
MANE:
ENST00000533608.7

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult solid tumours for rare disease

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Congenital disorders of glycosylation

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • DDG2P

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • Multiple exostoses

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

+7 more panels — install the extension to see the full list inline on any page.

Disease associations (Open Targets)

  • exostoses, multiple, type 2

    0.83
  • hereditary multiple exostoses

    0.79
  • seizures-scoliosis-macrocephaly syndrome

    0.76
  • Multiple osteochondromas

    0.74
  • hereditary disease

    0.51
  • hereditary multiple osteochondromas

    0.42
  • ovarian cancer

    0.38
  • carcinoma of liver and intrahepatic biliary tract

    0.37
  • esophageal adenocarcinoma

    0.37
  • bile duct carcinoma

    0.37

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

Protein function (UniProt)

Exostosin-2

Glycosyltransferase forming with EXT1 the heterodimeric heparan sulfate polymerase which catalyzes the elongation of the heparan sulfate glycan backbone (PubMed:22660413, PubMed:36402845, PubMed:36593275). Glycan backbone extension consists in the alternating transfer of (1->4)-beta-D-GlcA and (1->4)-alpha-D-GlcNAc residues from their respective UDP-sugar donors. Both EXT1 and EXT2 are required for the full activity of the polymerase since EXT1 bears the N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase activity within the complex while EXT2 carries the glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity (PubMed:36402845, PubMed:36593275). Heparan sulfate proteoglycans are ubiquitous components of the extracellular matrix and play an important role in tissue homeostasis and signaling (PubMed:19344451, PubMed:22660413)

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.