Summarized in Table 1 are the characteristics of both studied groups (age and gender), as well as the relevant clinical data of the studied patients, including type (AT or DVT) and classification of thrombotic incident (provoked/unprovoked), site of thrombosis, time intervals between thrombosis and sample collection, treatment status, and finally genotypic data on the 4G/5G polymorphism of the PAI-1 (SERPINE1) gene, as well as the ACE I/D polymorphism. This evidence concerns the gene SERPINE1 and Venous thrombosis.