A method of treating psoriasis in a patient by administering an IL-23 specific antibody, e.g., guselkumab, in a clinically proven safe and clinically proven effective amount and the patient achieves PASI90, PASI100 or IGA 0 or 1 score as measured 16, 24, 32, 40 and 48 weeks after initial treatment and the patient achieves higher efficacy than a patient treated with the secukinumab antibody