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ABCA2

Chr 9q34.3

ATP binding cassette subfamily A member 2

MANE:
ENST00000341511.11

Annotations refreshed 9 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Ataxia and cerebellar anomalies - narrow panel

    BIALLELIC, autosomal or pseudoautosomal
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal

Disease associations (Open Targets)

  • intellectual developmental disorder with poor growth and with or without seizures or ataxia

    0.75
  • autosomal recessive non-syndromic intellectual disability

    0.37
  • cutaneous mastocytosis

    0.26
  • lymphatic system disorder

    0.20
  • mastocytosis

    0.19
  • Alzheimer disease

    0.09
  • Eczematoid dermatitis

    0.08
  • dermatitis

    0.08
  • early-onset autosomal dominant Alzheimer disease

    0.08
  • genetic developmental and epileptic encephalopathy

    0.07

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

Protein function (UniProt)

ATP-binding cassette sub-family A member 2

Probable lipid transporter that modulates cholesterol sequestration in the late endosome/lysosome by regulating the intracellular sphingolipid metabolism, in turn participates in cholesterol homeostasis (Probable) (PubMed:15238223, PubMed:21810484, PubMed:24201375). May alter the transbilayer distribution of ceramide in the intraluminal membrane lipid bilayer, favoring its retention in the outer leaflet that results in increased acid ceramidase activity in the late endosome/lysosome, facilitating ceramide deacylation to sphingosine leading to the sequestration of free cholesterol in lysosomes (PubMed:24201375). In addition regulates amyloid-beta production either by activating a signaling pathway that regulates amyloid precursor protein transcription through the modulation of sphingolipid metabolism or through its role in gamma-secretase processing of APP (PubMed:22086926, PubMed:26510981). May play a role in myelin formation (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.