Mean MG concentration, CRP concentration, leukocyte count, SIRI, SII, and AISI did not differ significantly between patients with severe psoriasis (1.22 μg/mL; 5.04 mg/L; 8.09 × 109/L; 2.26; 833.90; 604.95, respectively) and those with mild–moderate psoriasis (1.28 μg/mL; 3.63 mg/L; 7,87 × 109/L; 1.91; 707.89; 491.87, respectively), with p values for all comparisons >0.05. This evidence concerns the gene MGAM and psoriasis.