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PAH

Chr 12q23.2

phenylalanine hydroxylase

Aliases:
PH
MANE:
ENST00000553106.6

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Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult onset leukodystrophy

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • Likely inborn error of metabolism

    BIALLELIC, autosomal or pseudoautosomal
  • Phenylketonuria

    BIALLELIC, autosomal or pseudoautosomal
  • Undiagnosed metabolic disorders

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

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Disease associations (Open Targets)

  • phenylketonuria

    0.89
  • Hyperphenylalaninemia

    0.68
  • Maternal hyperphenylalaninemia

    0.66
  • hereditary disease

    0.55
  • 6-pyruvoyl-tetrahydropterin synthase deficiency

    0.54
  • BH4-deficient hyperphenylalaninemia A

    0.54
  • pulmonary hypertension, primary, 1

    0.46
  • polymicrogyria, perisylvian, with cerebellar hypoplasia and arthrogryposis

    0.42
  • mild hyperphenylalaninemia

    0.38
  • malnutrition

    0.37

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

Protein function (UniProt)

Phenylalanine-4-hydroxylase

Catalyzes the hydroxylation of L-phenylalanine to L-tyrosine

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.