Table 1

Conditioning regimen for first transplant

Manchester			Westminster Children’s Hospital
Drug	Dose		No of patients	Drug	Dose	No of patients1-150
Busulphan	16 mg/kg	11		Busulphan	320 mg/m² not < 16 mg/kg	21
Cyclophosphamide	200 mg/kg	11		Cyclophosphamide	8 g/m² not > 300 mg/kg	21
			Busulphan	320 mg/m² not < 16 mg/kg	1
			Cyclophosphamide	200 mg/kg	1
			Busulphan	8 mg/kg	1
			Cyclophosphamide	3 g/m²	1
			Busulphan	8 mg/kg	2
			Cyclophosphamide	8 g/m² not > 300 mg/kg	2
			Busulphan	16 mg/kg	1
			Cyclophosphamide	200 mg/kg	1
			TLI	200 cGy/day × 6 days

↵1-150 Details not available in one patient. All doses expressed as total dose over four days. TLI = total lymphoid irradiation.