Skip to content
GenoLensGenoLens

PIK3R2

Chr 19p13.11

phosphoinositide-3-kinase regulatory subunit 2

Aliases:
P85B, p85, p85beta, p85-BETA
MANE:
ENST00000222254.13

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • DDG2P

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

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Fetal anomalies

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Hydrocephalus

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

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Limb disorders

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Malformations of cortical development

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Neurological segmental overgrowth

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

+4 more panels — install the extension to see the full list inline on any page.

Disease associations (Open Targets)

  • Megalencephaly - polymicrogyria - postaxial polydactyly - hydrocephalus

    0.79
  • megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 1

    0.77
  • cancer

    0.59
  • megalencephaly-polymicrogyria-postaxial polydactyly-hydrocephalus syndrome

    0.51
  • overgrowth syndrome and/or cerebral malformations due to abnormalities in MTOR pathway genes

    0.46
  • Seizure

    0.44
  • breast cancer

    0.42
  • hereditary disease

    0.42
  • non-small cell lung carcinoma

    0.40
  • neurodegenerative disease

    0.37

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

Protein function (UniProt)

Phosphatidylinositol 3-kinase regulatory subunit beta

Regulatory subunit of phosphoinositide-3-kinase (PI3K), a kinase that phosphorylates PtdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Binds to activated (phosphorylated) protein-tyrosine kinases, through its SH2 domain, and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. Indirectly regulates autophagy (PubMed:23604317). Promotes nuclear translocation of XBP1 isoform 2 in a ER stress- and/or insulin-dependent manner during metabolic overloading in the liver and hence plays a role in glucose tolerance improvement (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.