Soluble interleukin-2 receptor (sIL-2R) is a marker of disease activity in psoriasis: a comparison of sIL-2R, sCD27, sCD4, sCD8 and sICAM-1.

Abstract
Psoriasis is a T-cell-mediated inflammatory skin disease which can be treated successfully with immunosuppressive drugs. Our purpose was to evaluate disease activity of psoriasis and the effect of immunosuppressive treatment by monitoring the soluble T-cell products sIL-2R, sCD27, sCD4, sCD8 and sICAM-1. Twenty-two patients were treated orally with escalating dosages of cyclosporin A (n = 17)(3-5 mg/kg/day) or FK506 (n = 5)(0.05-0.15 mg/kg/day). The Psoriasis Area and Severity Index (PASI) was used to monitor clinical activity of psoriasis. Serum samples were analyzed by ELISA. sIL-2R levels showed the highest correlation with psoriasis disease activity (rs = 0.89