<prompt> Microangiopathic hemolytic anaemia MAHA is a component of all of the following, except:Thrombotic thrombocytopenic purpura TTPHemolytic uremic syndrome HUSHemolysis with elevated liver enzymes and low platelet HELLP syndromeParoxysmal nocturnal hemoglobinuria  <response>: - Paroxysmal nocturnal hemoglobinuria PNH: Results from acquired mutations in PIGA gene leading to deficiency of GPI-linked proteins in membrane of blood cells. Red cells deficient in GPI-linked factors are abnormally susceptible to lysis or injury by complement. This manifests as intravascular hemolysis, which is caused by the C5b-C9 membrane attack complex. The hemolysis is paroxysmal and nocturnal in only 25 of cases; chronic hemolysis without dramatic hemoglobinuria is more typical. Other options: - TTP : characterized by pentad of Microangiopathic haemolytic anemia; Thrombocytopenia; Fluctuating neurologic dysfunction; Renal abnormalities Fever. - HUS is characterized by triad of acute renal failure, thrombocytopenia microangiopathic hemolytic anemia. - HELLP syndrome : The main three diagnostic criteria include : Hepatic dysfunction thrombocytopenia microangiopathic hemolytic anaemia in patients suspected to have preeclampsia. 