TNF and psoriasis: However, correlation analysis revealed that psoriasis presence did not significantly correlate with inflammatory biomarkers such as ROS (r = 0.08, p = 0.21), CRP (r = 0.11, p = 0.12), TNF-α (r = 0.09, p = 0.18), or IL-6 (r = 0.07, p = 0.23).