BU 16mg/kg:1mg/kg,q6h,8, 7, 6, 5d.Ara‐C 800mg/m2:100mg,q12h,5, 4, 3, 2d.BACT中BCNU改为CCNU 400mg/m2,6d口服。Ara‐C 1200mg/m2:150mg/m2,q12h - 4,3, 2, 1d.