M Domenica Cappellini1, Vip Viprakasit1, Ali T Taher1, Pencho Georgiev1, Kevin H M Kuo1, Thomas Coates1, Ersi Voskaridou1, Hong-Keng Liew1, Idit Pazgal-Kobrowski1, G L Forni1, Silverio Perrotta1, Abderrahim Khelif1, Ashutosh Lal1, Antonis Kattamis1, Efthymia Vlachaki1, Raffaella Origa1, Yesim Aydinok1, Mohamed Bejaoui1, P Joy Ho1, Lee-Ping Chew1, Ping-Chong Bee1, Soo-Min Lim1, Meng-Yao Lu1, Adisak Tantiworawit1, Penka Ganeva1, Liana Gercheva1, Farrukh Shah1, Ellis J Neufeld1, Alexis Thompson1, Abderrahmane Laadem1, Jeevan K Shetty1, Jun Zou1, Jennie Zhang1, Dimana Miteva1, Tatiana Zinger1, Peter G Linde1, Matthew L Sherman1, Olivier Hermine1, John Porter1, Antonio Piga1. 1. From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris.
Abstract
BACKGROUND:Patients with transfusion-dependent β-thalassemia need regular red-cell transfusions. Luspatercept, a recombinant fusion protein that binds to select transforming growth factor β superfamily ligands, may enhance erythroid maturation and reduce the transfusion burden (the total number of red-cell units transfused) in such patients. METHODS: In this randomized, double-blind, phase 3 trial, we assigned, in a 2:1 ratio, adults with transfusion-dependent β-thalassemia to receive bestsupportive care plus luspatercept (at a dose of 1.00 to 1.25 mg per kilogram of body weight) or placebo for at least 48 weeks. The primary end point was the percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval. Other efficacy end points included reductions in the transfusion burden during any 12-week interval and results of iron studies. RESULTS: A total of 224 patients were assigned to the luspatercept group and 112 to theplacebo group. Luspatercept or placebo was administered for a median of approximately 64 weeks in both groups. The percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval was significantly greater in the luspatercept group than in the placebo group (21.4% vs. 4.5%, P<0.001). During any 12-week interval, the percentage of patients who had a reduction in transfusion burden of at least 33% was greater in the luspatercept group than in the placebo group (70.5% vs. 29.5%), as was the percentage of those who had a reduction of at least 50% (40.2% vs. 6.3%). The least-squares mean difference between the groups in serum ferritin levels at week 48 was -348 μg per liter (95% confidence interval, -517 to -179) in favor of luspatercept. Adverse events of transient bone pain, arthralgia, dizziness, hypertension, and hyperuricemia were more common with luspatercept than placebo. CONCLUSIONS: The percentage of patients with transfusion-dependent β-thalassemia who had a reduction in transfusion burden was significantly greater in the luspatercept group than in the placebo group, and few adverse events led to the discontinuation of treatment. (Funded by Celgene and Acceleron Pharma; BELIEVE ClinicalTrials.gov number, NCT02604433; EudraCT number, 2015-003224-31.).
RCT Entities:
BACKGROUND:Patients with transfusion-dependent β-thalassemia need regular red-cell transfusions. Luspatercept, a recombinant fusion protein that binds to select transforming growth factor β superfamily ligands, may enhance erythroid maturation and reduce the transfusion burden (the total number of red-cell units transfused) in such patients. METHODS: In this randomized, double-blind, phase 3 trial, we assigned, in a 2:1 ratio, adults with transfusion-dependent β-thalassemia to receive best supportive care plus luspatercept (at a dose of 1.00 to 1.25 mg per kilogram of body weight) or placebo for at least 48 weeks. The primary end point was the percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval. Other efficacy end points included reductions in the transfusion burden during any 12-week interval and results of iron studies. RESULTS: A total of 224 patients were assigned to the luspatercept group and 112 to the placebo group. Luspatercept or placebo was administered for a median of approximately 64 weeks in both groups. The percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval was significantly greater in the luspatercept group than in the placebo group (21.4% vs. 4.5%, P<0.001). During any 12-week interval, the percentage of patients who had a reduction in transfusion burden of at least 33% was greater in the luspatercept group than in the placebo group (70.5% vs. 29.5%), as was the percentage of those who had a reduction of at least 50% (40.2% vs. 6.3%). The least-squares mean difference between the groups in serum ferritin levels at week 48 was -348 μg per liter (95% confidence interval, -517 to -179) in favor of luspatercept. Adverse events of transient bone pain, arthralgia, dizziness, hypertension, and hyperuricemia were more common with luspatercept than placebo. CONCLUSIONS: The percentage of patients with transfusion-dependent β-thalassemia who had a reduction in transfusion burden was significantly greater in the luspatercept group than in the placebo group, and few adverse events led to the discontinuation of treatment. (Funded by Celgene and Acceleron Pharma; BELIEVE ClinicalTrials.gov number, NCT02604433; EudraCT number, 2015-003224-31.).
Authors: Maria Domenica Cappellini; Roberta Russo; Immacolata Andolfo; Achille Iolascon Journal: Hematology Am Soc Hematol Educ Program Date: 2020-12-04
Authors: Benedetta Rambaldi; Elisa Diral; Samantha Donsante; Noemi Di Marzo; Federica Mottadelli; Lucia Cardinale; Erica Dander; Giuseppe Isimbaldi; Pietro Pioltelli; Andrea Biondi; Mara Riminucci; Giovanna D'Amico; Elena Maria Elli; Alice Pievani; Marta Serafini Journal: Ann Hematol Date: 2020-10-21 Impact factor: 3.673