FMO3 and trimethylaminuria: The eight coding exons of the FMO3 gene were Sanger sequenced, revealing a homozygous missense variant, c.23T>C (p.Ile8Thr), as well as two known homozygous variants, c.472G>A (p.Glu158Lys) and c.923A>G (pGlu308Gly), associated with no to mild presentation of TMAU.