Hypermethioninemia (MET)

Hypermethioninemia is an excess of a particular protein building block (amino acid), called methionine, in the blood.

Most Individuals with hypermethioninemia may not show any symptoms. A few individual with hypermethioninemia may develop intellectual disability and other neurological problems including delays in motor skills such as standing or walking; sluggishness; muscle weakness; liver problems; unusual facial features; and their breath, sweat, or urine may have a smell resembling boiled cabbage.