Preferred Label : Trimethylaminuria;
Symbol : TMAU;
CISMeF acronym : TMAU;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Fish-odor syndrome;
Description : Trimethylaminuria results from the abnormal presence of large amounts of volatile
and malodorous trimethylamine within the body. This chemical, a tertiary aliphatic
amine, is excreted in the urine, sweat (ichthyohidrosis), and breath, which take on
the offensive odor of decaying fish (Mitchell, 1996).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the flavin-containing monooxygenase 3 gene (FMO3, 136132.0001);
Laboratory abnormalities : Large amounts of TMA in urine, sweat, and breath; Trimethylaminuria; Deficiency of FMO-mediated N-oxidation of amino-trimethylamine (TMA) derived from
foodstuffs;
Prefixed ID : #602079;
Origin ID : 602079;
UMLS CUI : C0342739;
Automatic exact mappings (from CISMeF team)
Currated CISMeF NLP mapping
DO Cross reference
Genes related to phenotype
HPO term(s)
ORDO concept(s)
Semantic type(s)
UMLS correspondences (same concept)