dopa decarboxylase inhibitor to reduce side effects.
The polyamines are progressively synthesized by decarboxylation from ornithine by a rate limiting enzyme ornithine decarboxylase (ODC ).
The other is a GAD (Glutamic Acid Decarboxylase) autoantibody test.
HEP results from a defect in uroporphyrinogen decarboxylase activity (step 5), and is caused by defects in the same gene as PCT.
PCT is caused by deficient uroporphyrinogen decarboxylase.