Efficacy, Radiographic and Laboratory Changes in Refractory Rheumatoid Arthritis Patients Treated With H.P. Acthar Gel

Rheumatoid arthritis (RA) is a systemic inflammatory disease which causes premature mortality, disability and compromised quality of life in the industrialized and developing world. The prevalence of RA is believed to range from 0.5-1.0% in the general population. Over the past half century, many studies have found mortality to be increased in patients with established RA in comparison with the general population. Despite available treatment options for RA, some patients still have disease that is refractory to treatment and cannot achieve remission. H.P. Acthar gel (adrenocorticotropic hormone gel) received FDA approval for treatment of a variety of diseases, including RA in 1952. The proposed efficacy of H.P. Acthar gel has been attributed to its ability to induce production of endogenous steroids and to bind melanocortin receptors on lymphocytes and other cells to modulate immunologic responses. The present study will examine the clinical response, cytokine production and joint imaging after addition of H.P. Acthar gel to confirm the efficacy, confirm different mechanism of action in comparison to steroids and other DMARDs by looking for post treatment changes in cytokine expression.