非清髓性外周血干细胞移植治疗慢性髓系白血病慢性期及加速期的疗效观察

本研究观察非清髓造血干细胞移植对慢性髓系白血病慢性期（CML—CP）、慢性髓系白血病加速期（CML—AP）的疗效。用福达华（F）30mg／m^2×6天，白消安（B）4mg／kg×2天，环磷酰胺（CTX）350mg／（m^2·d）×2天，伍用或不伍用阿糖胞苷（mra—C）对24例HLA全相合及1个位点不合者进行预处理，并对其造血恢复等指标进行动态观察。结果表明，24例患者造血顺利恢复，ANC〉0．5×10^9／L的中位时间平均为移植后13天，BPC〉20×10^9／L的中位时间平均为移植后11．5天。移植后30天经短串重复系列（STR—PCR）检测其中12例植活患者，结果9例为完全嵌合状态（CDC），3例为混合嵌合体。移植后180天时所有存活的18例患者均为CDC。中位随访24个月（4—48月），18例患者无病存活，2例患者死于严重aGVHD，1例死于cGVHD，2例死于间质性肺炎，1例死于复发。结论：非清髓造血干细胞移植是CML慢性期的有效治疗手段，对于加速期患者亦有良效。

Nonmyeloablative Peripheral Blood Stem Cell Transplantation for Chronic Myeloid Leukemia in Chronic and Accelerated Phases

The aim of this study was to investigate the effect of nonmyeloablative peripheral blood stem cell transplantation in treatment of chronic myeloid leukemia in chronic phase (CML-CP) and accelerated phase (CML-AP). 24 patients with CML including 16 in CML-CP and 8 in CML-AP were treated with nonmyeloablative conditioning regimen for peripheral blood stem cell transplantation (PBHSCT). The conditioning regimen included fludarabine (30 mg/m(2)x6 d), busulphan [4 mg/(kg.d)x2 d] and CTX [350 mg/(m2.d)x2 d] combined with or without Ara-C. The donors were HLA-identical (n=20) and 5/6 antigen-matched (n=4). The dynamic observation of hematopoietic recovery in all patients was carried out. The results indicated that all the patients were successfully engrafted. The mean time for increase of the number of neutrophils to more than 0.5x10(9)/L and platelet more than 20x10(9)/L were 13 days and 11.5 days respectively. Out of 12 patients, 9 patients showed complete donor chimerism and 3 patients showed mixed chimerism at 30 days after transplantation. At 180 days after transplantation, 18 survival patients showed complete donor chimerism. 18 patients remained alive after a median follow-up length of 24 months (4-48 months). 2 cases died of severe acute GVHD and 1 case died of chronic GVHD, 2 cases died of interstitial pneumonia and 1 case died of relapsed. In conclusions, nonmyeloablative peripheral blood stem cell transplantation is an effective therapeutic method for CML patients in chronic phase and accelerated phase.