The PRINCE study is a phase 3, randomized, multicenter, open-label, controlled trial. The study was designed to evaluate the efficacy of pegcetacoplan in 48 adult patients who are treatment-naïve, showed evidence of hemolysis (elevated LDH ≥ 1.5x ULN) and had hemoglobin levels that were less than the lower limit of normal at the time of their screening. Primary outcome measures, to be evaluated after 26 weeks of treatment, include hemoglobin stabilization in the absence of transfusion and reduction in lactate dehydrogenase (LDH) level. A total of 53 patients were enrolled in the study.
Based on positive results from the pivotal PEGASUS study of pegcetacoplan in PNH, the company plans to submit marketing applications for pegcetacoplan for the treatment of PNH both in the United States and the European Union in the second half of 2020.