ACLY and Arterial thrombosis: Included over a 10-year period, the final study population consisted of 3,147 patients with a history of VTE or other venous or arterial thrombosis, thereof 2,419 classified as aPLneg, 477 as aPLlow, and 251 as aPLhigh based on the results of solid phase testing for aCL and aβ2GPI.