CSF2 and psoriasis: Indeed, the concentration of C5a (median: 19741, IQR: 17432), p = 0.05, C9 (median: 21526, IQR: 17432), p = 0.0001 and GM-CSF (median: 2.79, IQR: 0), p = 0.05, were higher in psoriasis as compared to HD plasma, although the elevation of GM-CSF and C5a were at the limit of the statistical significance (Figure 7B).