ADAMTS13 and HELLP syndrome: Because thrombotic microangiopathies (TMAs) and PE/HELLP syndrome present with similar clinical manifestations in pregnancy, such as end-organ failure due to ischemia, the irregularities in the proteolysis of vWF and the reduced or false expression of ADAMTS-13 are examined thoroughly, regarding their involvement in the development of PE and HELLP syndrome [8,11].