ANGPTL2 and histiocytic sarcoma: In HS patients, serum ANGPTL2 levels were related to age (rho = 0.304; p = 0.003), serum hs-CRP concentrations (rho = 0.269; p = 0.009), fibrinogen levels (rho = 0.342; p = 0.003), and duration of HS (rho = 0.242; p = 0.019).