Paroxysmal Nocturnal Hemoglobinuria, also known as marchiafava-micheli disease, is related to hemolytic anemia and hemoglobinuria. An important gene associated with Paroxysmal Nocturnal Hemoglobinuria is PIGA (Phosphatidylinositol Glycan Anchor Biosynthesis Class A), and among its related pathways/superpathways are Innate Immune System and PAK Pathway. The drugs Benzocaine and Temsirolimus have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and spinal cord, and related phenotypes are abnormal erythrocyte enzyme level and anemia