Porphyria, also known as hematoporphyria, is related to porphyria cutanea tarda, type i and familial porphyria cutanea tarda, and has symptoms including abdominal pain, constipation and diarrhea. An important gene associated with Porphyria is HMBS (Hydroxymethylbilane Synthase), and among its related pathways/superpathways are Metabolism and Transport of inorganic cations/anions and amino acids/oligopeptides. The drugs Colestipol and Iron have been mentioned in the context of this disorder. Affiliated tissues include skin and bone marrow, and related phenotypes are Reduced mammosphere formation and homeostasis/metabolism