Austin Kulasekararaj, MBBS, MD, MRCP, FRCPath, presents results from the phase 3b APPULSE-PNH trial at the 2025 EHA Congress in Milan, Italy. The data demonstrate that, in patients with PNH and hemoglobin ≥10 g/dL who switched from anti-C5 therapy to iptacopan, iptacopan was superior in improving hemoglobin levels from baseline.