Psoriasis and rheumatoid arthritis (RA) have been shown to be independent risk factors for myocardial infarction (MI). The risk is believed to be related in part to systemic inflammation associated with these diseases. Some studies have suggested that treatment of RA patients with anti-TNF alpha can decrease the risks of MI. However, we do not have data on the effect of anti-TNF alpha on coronary atherosclerosis. Adalimumab is probably the best anti-TNF alpha candidate to study for an effect on coronary atherosclerosis as it has more affinity for membrane bound TNF alpha than other anti-TNF alpha products such as etanercept and a higher global anti-TNF alpha activity in psoriasis patients.