In the controlled and non-controlled portions of psoriasis clinical studies, the incidence of malignancies excluding non-melanoma skin cancers was 0.36 per 100 patient-years of follow-up for ustekinumab-treated patients (8 patients in 2,249 patient-years of follow-up) and malignancies reported included breast, colon, head and neck, kidney, prostate, and thyroid cancers.