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WDR81

Chr 17p13.3

WD repeat domain 81

Aliases:
FLJ33817, PPP1R166, CAMRQ2, SORF-2
MANE:
ENST00000409644.6

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Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Ataxia and cerebellar anomalies - narrow panel

    BIALLELIC, autosomal or pseudoautosomal
  • Cerebellar hypoplasia

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary ataxia

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary ataxia with onset in adulthood

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Adult onset neurodegenerative disorder

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

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Disease associations (Open Targets)

  • Dysequilibrium syndrome

    0.78
  • cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 2

    0.77
  • Rare hereditary ataxia

    0.71
  • hydrocephalus, congenital, 3, with brain anomalies

    0.70
  • hereditary disease

    0.47
  • cerebellar ataxia, intellectual disability, and dysequilibrium

    0.38
  • congenital non-communicating hydrocephalus

    0.37
  • congenital communicating hydrocephalus

    0.37
  • neurodegenerative disease

    0.35
  • microlissencephaly

    0.34

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

Protein function (UniProt)

WD repeat-containing protein 81

Functions as a negative regulator of the PI3 kinase/PI3K activity associated with endosomal membranes via BECN1, a core subunit of the PI3K complex. By modifying the phosphatidylinositol 3-phosphate/PtdInsP3 content of endosomal membranes may regulate endosome fusion, recycling, sorting and early to late endosome transport (PubMed:26783301). It is for instance, required for the delivery of cargos like BST2/tetherin from early to late endosome and thereby participates indirectly to their degradation by the lysosome (PubMed:27126989). May also play a role in aggrephagy, the macroautophagic degradation of ubiquitinated protein aggregates. In this process, may regulate the interaction of SQSTM1 with ubiquitinated proteins and also recruit MAP1LC3C (PubMed:28404643). May also be involved in maintenance of normal mitochondrial structure and organization (By similarity)

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.