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Seydoux C, Medinger M, Gerull S, Halter J, Heim D, Chalandon Y, Levrat SM, Schanz U, Nair G, Ansari M, Simon P, Passweg JR, Cantoni N. Busulfan-cyclophosphamide versus cyclophosphamide-busulfan as conditioning regimen before allogeneic hematopoietic cell transplantation: a prospective randomized trial. Ann Hematol 2021; 100:209-216. [PMID: 33098041 PMCID: PMC7782401 DOI: 10.1007/s00277-020-04312-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 10/15/2020] [Indexed: 01/20/2023]
Abstract
Busulfan and cyclophosphamide (BuCy) is a frequently used myeloablative conditioning regimen for allogeneic hematopoietic cell transplantation (allo-HCT). Theoretical considerations and pharmacological data indicate that application of busulfan prior to subsequent cyclophosphamide (BuCy) may trigger liver toxicity. Reversing the order of application to cyclophosphamide-busulfan (CyBu) might be preferable, a hypothesis supported by animal data and retrospective studies. We performed a prospective randomized trial to determine impact of order of application of Bu and Cy before allo-HCT in 70 patients with hematological malignancy, 33 patients received BuCy and 37 CyBu for conditioning. In the short term, there were minimal differences in liver toxicity favoring CyBu over BuCy, significant only for alanine amino transferase at day 30 (p = 0.03). With longer follow-up at 4 years, non-relapse mortality (6% versus 27%, p = 0.05) was lower and survival (63% versus 43%, p = 0.06) was higher with CyBu compared to BuCy. Other outcomes, such as engraftment (p = 0.21), acute and chronic graft-versus-host disease (p = 0.40; 0.36), and relapse (p = 0.79), were similar in both groups. We prospectively show evidence that the order of application of Cy and Bu in myeloablative conditioning in allo-HCT patients has impact on outcome.
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Affiliation(s)
- Claire Seydoux
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland
| | - Michael Medinger
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland.
| | - Sabine Gerull
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland
| | - Joerg Halter
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland
| | - Dominik Heim
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland
| | - Yves Chalandon
- Division of Hematology, Bone Marrow Transplant Unit, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Stavroula Masouridi Levrat
- Division of Hematology, Bone Marrow Transplant Unit, University Hospital of Geneva and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Urs Schanz
- Department of Medical Oncology and Hematology, Stem-/Immune- cell-transplant Unit, University Hospital of Zurich, Zurich, Switzerland
| | - Gayathri Nair
- Department of Medical Oncology and Hematology, Stem-/Immune- cell-transplant Unit, University Hospital of Zurich, Zurich, Switzerland
| | - Marc Ansari
- Department Women, Children and Adolescent, Unit of Oncology and Hematology Pediatric, University Hospital of Geneva, Geneva, Switzerland
- Cansearch Research Laboratory, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Patrick Simon
- Clinical Trials Unit, Department of Clinical Research, Basel University, Basel, Switzerland
| | - Jakob R Passweg
- Divisions of Hematology and Internal Medicine, Department of Medicine, University Hospital of Basel, Petersgraben 4, CH-4031, Basel, Switzerland.
| | - Nathan Cantoni
- Division of Oncology, Hematology and Transfusion Medicine, Kantonsspital Aarau, Aarau, Switzerland
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