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AP1S2

Chr Xp22.2

adaptor related protein complex 1 subunit sigma 2

Aliases:
SIGMA1B
MANE:
ENST00000672987.1

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Ataxia and cerebellar anomalies - narrow panel

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Childhood onset dystonia, chorea or related movement disorder

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • DDG2P

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Fetal anomalies

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Hereditary ataxia

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Hydrocephalus

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Intellectual disability

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Intracerebral calcification disorders

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

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Disease associations (Open Targets)

  • syndromic X-linked intellectual disability 5

    0.80
  • X-linked intellectual disability - Dandy-Walker malformation - basal ganglia disease - Seizures

    0.75
  • fried syndrome

    0.67
  • HIV infectious disease

    0.50
  • Basal ganglia calcification

    0.46
  • hereditary disease

    0.40
  • Dystonia

    0.37
  • X-linked syndromic intellectual disability

    0.26
  • ovarian carcinoma

    0.16
  • Intellectual disability

    0.12

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

Protein function (UniProt)

AP-1 complex subunit sigma-2

Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules

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.