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Locatelli F, Thompson AA, Kwiatkowski JL, Porter JB, Thrasher AJ, Hongeng S, Sauer MG, Thuret I, Lal A, Algeri M, Schneiderman J, Olson TS, Carpenter B, Amrolia PJ, Anurathapan U, Schambach A, Chabannon C, Schmidt M, Labik I, Elliot H, Guo R, Asmal M, Colvin RA, Walters MC. Betibeglogene Autotemcel Gene Therapy for Non-β 0/β 0 Genotype β-Thalassemia. N Engl J Med 2022; 386:415-427. [PMID: 34891223 DOI: 10.1056/nejmoa2113206] [Citation(s) in RCA: 101] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Betibeglogene autotemcel (beti-cel) gene therapy for transfusion-dependent β-thalassemia contains autologous CD34+ hematopoietic stem cells and progenitor cells transduced with the BB305 lentiviral vector encoding the β-globin (βA-T87Q) gene. METHODS In this open-label, phase 3 study, we evaluated the efficacy and safety of beti-cel in adult and pediatric patients with transfusion-dependent β-thalassemia and a non-β0/β0 genotype. Patients underwent myeloablation with busulfan (with doses adjusted on the basis of pharmacokinetic analysis) and received beti-cel intravenously. The primary end point was transfusion independence (i.e., a weighted average hemoglobin level of ≥9 g per deciliter without red-cell transfusions for ≥12 months). RESULTS A total of 23 patients were enrolled and received treatment, with a median follow-up of 29.5 months (range, 13.0 to 48.2). Transfusion independence occurred in 20 of 22 patients who could be evaluated (91%), including 6 of 7 patients (86%) who were younger than 12 years of age. The average hemoglobin level during transfusion independence was 11.7 g per deciliter (range, 9.5 to 12.8). Twelve months after beti-cel infusion, the median level of gene therapy-derived adult hemoglobin (HbA) with a T87Q amino acid substitution (HbAT87Q) was 8.7 g per deciliter (range, 5.2 to 10.6) in patients who had transfusion independence. The safety profile of beti-cel was consistent with that of busulfan-based myeloablation. Four patients had at least one adverse event that was considered by the investigators to be related or possibly related to beti-cel; all events were nonserious except for thrombocytopenia (in 1 patient). No cases of cancer were observed. CONCLUSIONS Treatment with beti-cel resulted in a sustained HbAT87Q level and a total hemoglobin level that was high enough to enable transfusion independence in most patients with a non-β0/β0 genotype, including those younger than 12 years of age. (Funded by Bluebird Bio; HGB-207 ClinicalTrials.gov number, NCT02906202.).
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Affiliation(s)
- Franco Locatelli
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Alexis A Thompson
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Janet L Kwiatkowski
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - John B Porter
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Adrian J Thrasher
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Suradej Hongeng
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Martin G Sauer
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Isabelle Thuret
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Ashutosh Lal
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Mattia Algeri
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Jennifer Schneiderman
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Timothy S Olson
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Ben Carpenter
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Persis J Amrolia
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Usanarat Anurathapan
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Axel Schambach
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Christian Chabannon
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Manfred Schmidt
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Ivan Labik
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Heidi Elliot
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Ruiting Guo
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Mohammed Asmal
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Richard A Colvin
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
| | - Mark C Walters
- From IRCCS Ospedale Pediatrico Bambino Gesù, Sapienza, University of Rome, Rome (F.L., M. Algeri); Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago (A.A.T., J.S.); Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia (J.L.K., T.S.O.); University College London Hospital (J.B.P., B.C.) and University College London Great Ormond Street Institute of Child Health and Great Ormond Street Hospital NHS Trust (A.J.T., P.J.A.) - all in London; Ramathibodi Hospital, Mahidol University, Bangkok, Thailand (S.H., U.A.); the Department of Pediatric Hematology, Oncology, and Stem Cell Transplantation in Children (M.G.S.) and the Institute of Experimental Hematology (A.S.), Hannover Medical School, Hannover, and GeneWerk, Heidelberg (M.S., I.L.) - both in Germany; Hôpital de la Timone (I.T.) and Institut Paoli-Calmettes Comprehensive Cancer Center (C.C.) - both in Marseille, France; the University of California, San Francisco, Benioff Children's Hospital, Oakland (A.L., M.C.W.); and the Division of Hematology-Oncology, Boston Children's Hospital, Harvard Medical School, Boston (A.S.), and Bluebird Bio, Cambridge (H.E., R.G., M. Asmal, R.A.C.) - all in Massachusetts
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