Inborn Errors of Metabolism Clinical Trial
Official title:
Clinical Phase II Trial to Compare Treosulfan-based Conditioning Therapy With Busulfan-based Conditioning Prior to Allogeneic Haematopoietic Stem Cell Transplantation (HSCT) in Paediatric Patients With Non-malignant Diseases
The aim of the trial is to describe the safety and efficacy of intravenous (i.v.) Treosulfan compared to the conventional (myeloablative) dose of i.v. Busulfan, each administered as part of a standardised Fludarabine-containing conditioning regimen and to contribute to a PK model which permits - in conjunction with data comparing Treosulfan and Busulfan in adults with malignant diseases - to extend the use of Treosulfan in the paediatric population by extrapolating efficacy.
The prospective clinical phase II protocol MC-FludT.16/NM is to be conducted to verify safety and efficacy of Treosulfan-based conditioning compared to Busulfan-based conditioning in paediatric patients. Based on the given clinical experience with either Treosulfan-based or Busulfan-based conditioning in combination with Fludarabine no increased risk for graft failure is expected in paediatric patients. A potential benefit for study patients is expected with respect to a probably low non-haematological toxicity of treatment compared to myeloablative TBI-based conditioning or high-dose Busulfan-based conditioning in combination with Cyclophosphamide. However, the allogeneic HSCT procedure itself potentially involves serious risks with regard to severe or life-threatening conditions like graft versus host disease (GvHD) and/or infectious complications as well as graft failure. In summary, the primary goal of this study is to evaluate the Treosulfan-based myeloablative conditioning regimen as an alternative in children and to contribute to the current PK model for Treosulfan to be able to finally give age (or body surface area [BSA]) dependent dose recommendations. The treatment regimens given in the protocol MC-FludT.16/NM are based on sufficient clinical safety and efficacy data. Considering the vital indication for allogeneic HSCT of the selected patient population, the risk-benefit assessment seems to be in favour of the study conduct. Moreover, planned interim analyses will ensure the early identification of unexpected risks. Therefore, the conduct of the protocol MC-FludT.16/NM is considered reasonably justified. ;
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