The efficacy of ADENURIC® was confirmed in three phase 3 pivotal studies (the two pivotal studies APEX and FACT and the additional CONFIRMS study, described below), which included 4101 patients with hyperuricemia and gout. In each of these pivotal phase 3 studies, ADENURIC® was more effective in lowering serum uric acid concentrations and maintaining them at an appropriate level compared to allopurinol.