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XPNPEP3

Chr 22q13.2

X-prolyl aminopeptidase 3

Aliases:
APP3, NPHPL1, ICP55
MANE:
ENST00000357137.9

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Cystic kidney disease

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Rare multisystem ciliopathy disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Renal ciliopathies

    BIALLELIC, autosomal or pseudoautosomal
  • Tubulointerstitial kidney disease

    BIALLELIC, autosomal or pseudoautosomal
  • Unexplained kidney failure in young people

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary neuropathy or pain disorder

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • nephronophthisis-like nephropathy 1

    0.76
  • nephronophthisis

    0.74
  • late-onset nephronophthisis

    0.37
  • bipolar disorder

    0.24
  • hereditary disease

    0.19
  • myopathy with myalgia, increased serum creatine kinase, and with or without episodic rhabdomyolysis 1

    0.18
  • peripheral neuropathy

    0.18
  • kidney disorder

    0.18
  • appendicitis

    0.14
  • acute myeloid leukemia

    0.11

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

Protein function (UniProt)

Xaa-Pro aminopeptidase 3

Catalyzes the removal of a penultimate prolyl residue from the N-termini of peptides, such as Leu-Pro-Ala (PubMed:25609706, PubMed:28476889). Also shows low activity towards peptides with Ala or Ser at the P1 position (PubMed:28476889)

Curated MONDO disease pages that list XPNPEP3 among their top associated genes.

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.