NCIt definition : A rare acquired hematologic disorder characterized by hemolytic anemia, dark-colored
urine due to the release of hemoglobin in the blood, and thrombosis. The episodes
of hemolysis tend to occur at night. It is caused by a somatic mutation in the glycosylphosphatidylinositol
biosynthesis gene.;
Alternative definition : NCI-GLOSS: A rare disorder in which red blood cells are easily destroyed by certain
immune system proteins. Symptoms include blood clots, and red or brownish urine in
the morning. Aplastic anemia (decreased production of blood cells) may lead to PNH,
and people with PNH are at increased risk of acute myelogenous leukemia.;
Codes from synonyms : CDR0000438735; CDR0000438734;