THOUSAND OAKS, Calif. & COLLEGEVILLE, Pa.--(BUSINESS WIRE)--Amgen (NASDAQ:AMGN) and Wyeth Pharmaceuticals, a division of Wyeth (NYSE:WYE), today announced the presentation of additional data that showed that the safety profile of Enbrel® (etanercept) was maintained with long-term use in patients with moderate-to-severe juvenile rheumatoid arthritis (JRA) who completed up to eight years of therapy. JRA is a chronic autoimmune disease of childhood that is sometimes difficult to diagnose. ENBREL is the only biologic medicine currently approved to treat the signs and symptoms of JRA in patients who have previously tried a traditional disease modifying antirheumatic drug (DMARD). The study results will be presented at the European League Against Rheumatism (EULAR) Annual Congress, an international rheumatology meeting, in Barcelona, Spain.