Journal Article

Real life use of ravulizumab in Italian patients with paroxysmal nocturnal hemoglobinuria: evidence from the REACTION observational study

Amico, Valeria, Sica, Simona, Selleri, Carmine, Ori, Alessandra, Ciceri, Fabio, Fattizzo, Bruno, Beggiato, Eloise, Spedini, Pierangelo, Iori, Anna Paola, Amendola, Angela, Greve, Maria Bruna, Tucci, Alessandra, Danesin, Cristina, De Vivo, Antonio, Sottana, Federica, Carini, Fabio, Fioritoni, Francesca, Longu, Francesco, Di Renzo, Nicola, Metafuni, Elisabetta, Figuera, Amalia, Rambaldi, Alessandro, Campolo, Benedetta, Cignetti, Alessandro, Urbano, Tiziana Anna, Caocci, Giovanni, Rapezzi, Davide, Marano, Luana, Di Bona, Eros, Clissa, Cristina, Cabibbo, Sergio, Cassanelli, Francesca, Raso, Simona, Lanza, Francesco, Gasparri, Giulia, Barcellini, Wilma

2026

Overview

Ravulizumab is a second-generation C5i engineered from eculizumab to achieve immediate, complete, and sustained inhibition of terminal complement activity in PNH. The REACTION observational cohort study describes the effectiveness and tolerability of ravulizumab in Italian patients who were previously treated with eculizumab. Eighty-one PNH patients were enrolled in this study. The primary endpoint was the percentage change in lactate dehydrogenase (LDH) from baseline to the end of observation (52 weeks follow-up). Among secondary endpoints, transfusion avoidance, breakthrough hemolysis (BTH) and patients’ quality of life (QoL) were evaluated. The median (25–75 percentiles) percentage change in LDH at 52 weeks follow-up was -2.6 (-11.5–13.4) U/L, with 92.3% of the patients presenting LDH within or < 1.5 × upper limit of normal (ULN). Overall, 20 (25.0%) patients required transfusion during the eculizumab period and 15 (18.8%) during the ravulizumab. Seven BTH events were observed, 5 during eculizumab period and 2 (triggered by other medical conditions) during ravulizumab, suggesting the reduction of pharmacokinetic BTH during ravulizumab treatment. EORTC-QLQ-C30 and FACIT-Fatigue scores were similar to the general population, and patients’ preference indicated ravulizumab as the favorite treatment. The REACTION study confirmed the effectiveness of ravulizumab in maintaining stable disease and hemolysis control in the real-world setting. Clinical trial registration. NCT05274633, 02-Mar-2022.

• Publisher: Springer Berlin Heidelberg,Springer Nature B.V,Springer
• Subject: Adult / Aged / Anemia / Antibodies, Monoclonal, Humanized - administration & dosage / Antibodies, Monoclonal, Humanized - adverse effects / Antibodies, Monoclonal, Humanized - therapeutic use / Blood / Bone marrow / Breakthrough hemolysis / Chronic illnesses / Clinical medicine / Cohort analysis / Complement Inactivating Agents - therapeutic use / Data collection / Drug dosages / Drug withdrawal / Dysphagia / Dyspnea / Erectile dysfunction / Female / Follow-Up Studies / Health-related quality of life / Hematology / Hemoglobin / Hemoglobinuria, Paroxysmal - blood / Hemoglobinuria, Paroxysmal - drug therapy / Hemoglobinuria, Paroxysmal - epidemiology / Hemolysis - drug effects / Humans / Italy - epidemiology / L-Lactate Dehydrogenase - blood / Lactate dehydrogenase / Male / Medicine / Medicine & Public Health / Middle Aged / Mortality / Oncology / Paroxysmal nocturnal hemoglobinuria / Patients / Performance evaluation / Pharmacokinetics / Preferences / Quality of Life / Ravulizumab / Stem cells / Thromboembolism / Thrombosis