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GAMT

Chr 19p13.3

guanidinoacetate N-methyltransferase

Aliases:
PIG2, TP53I2
MANE:
ENST00000252288.8

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • 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
  • Undiagnosed metabolic disorders

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

  • Adult onset neurodegenerative disorder

    Unknown
  • Childhood onset dystonia, chorea or related movement disorder

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • guanidinoacetate methyltransferase deficiency

    0.85
  • cerebral creatine deficiency syndrome

    0.58
  • hereditary disease

    0.53
  • Intellectual disability

    0.37
  • Seizure

    0.37
  • Abnormality of the nervous system

    0.34
  • Parkinson disease

    0.34
  • late-onset Parkinson disease

    0.34
  • Hereditary late-onset Parkinson disease

    0.34
  • metabolic syndrome

    0.07

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

Protein function (UniProt)

Guanidinoacetate N-methyltransferase

Converts guanidinoacetate to creatine, using S-adenosylmethionine as the methyl donor (PubMed:24415674, PubMed:26003046, PubMed:26319512). Important in nervous system development (PubMed:24415674)

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.