Similarly, Pektas et al. explored the actions of NB-UVB 310-315 nm phototherapy on the oxidative status of 24 subjects with psoriasis; total oxidant status and oxidative stress index values increased significantly (p < 0.001) after the phototherapy sessions but, at the same time, hsCRP, total antioxidant status, serum paraoxonase-1 and AS displayed similar values pre-/post-exposure (p > 0.05). This evidence concerns the gene PON1 and psoriasis.