- After treatment: hs-CRP and IL-17A levelshad decreased gradually (hs-CRP: before treatment: 11.88 ± 21.29, after 12 weeks: 4.27 ± 4.89, after 24 weeks: 2.13 ± 3.4) and IL-17A: before treatment: 43.48 ± 99.50, after 12 weeks: 23.82 ± 52.18, after 24 weeks: 6.05 ± 6.44). hs-CRP, IL-17A and the severity of disease related to each other.