This PMOS will be conducted in a prospective, single-arm, multicountry, multicenter format. The assignment of the patient to Humira is not decided in advance by this protocol but falls within the current practice. The prescription of Humira is clearly separated from the decision to include the patient in this study. No additional procedures (other than standard of care) shall be applied to the patients. As this study is observational in nature, its follow-up is not interventional and is left to the judgment of each physician within the 14-17 months period (including tuberculosis (TB) screening and prophylaxis, if indicated), which defines the survey for each patient. The TB screening period per patient will be 1-4 weeks and, if applicable, the TB prophylactic treatment period before Humira administration will be 1 month in accordance with local guidelines. For indicative purposes, follow-up of patients should entail approximately 7 patient visits during this period. These visits will take place at average intervals of 3 months, apart from the first visit following TB screening. The first visit following introduction of Humira and final visits are required because of intercurrent events. If treatment with Humira is discontinued, the standard practice is to review the patient after a period of 70 days or 5 half-lives following the intake of the last dose of physician-prescribed treatment. If the physician decides to permanently discontinue Humira before the end of the planned observational period of 13 months, the reason for discontinuation and the new treatment regimen prescribed, if applicable, will be documented. The next routine follow-up visit will be the termination visit for this patient in the PMOS.
