非清髓性异基因外周血造血干细胞移植治疗慢性白血病七例报告

Nonmyeloablative allogeneic peripheral blood stem cell transplantation for chronic leukemia:a report of seven cases

目的 总结非清髓性异基因外周血造血干细胞移植 (NASCT)治疗白血病的经验。方法 对 7例白血病患者进行非清髓性预处理 ,预处理采用抗CD3单克隆抗体、环孢素A、环磷酰胺及阿糖胞苷 ,4例患者加用氟达拉滨 ,随后施行HLA配型完全相合同胞供者的NASCT。术后采用环孢素A及甲氨蝶呤或环孢素A及霉酚酸酯预防移植物抗宿主病 (GVHD)。结果 全部患者的造血功能均获得快速重建 ,中性粒细胞于术后 9～ 12d恢复到 0 .5× 10 9/L以上 ,血小板于术后 11～ 2 8d恢复到 30 .0× 10 9/以上。 7例中 ,4例完全植入 ,3例嵌合性植入。 2例发生急性GVHD ,其中 1例死亡。结论 NASCT治疗慢性白血病疗效肯定 ,并发症少 ,是治疗白血病的有效方法。

Objective To summarize the experimence of nonmyeloablative allogeneic peripheral blood cell transplantation in the treatment of chronic leukemia. Methods Seven patients, including 6 cases of chronic myeloid leukemia (in chronic phase), one of chronic lymphoid leukemia (in third stage), with HLA-identical siblings donor received allogeneic peripheral blood stem cell transplantation after a nonmyeloablative conditioning. Results All of them were engrafted with donor cells (4 with full of donor cells grafted, 3 with mixed chimerism) and recovered hematopoiesis (WBC recovered to more than 0.5 ×10 9/L during postoperative 9 day to 21 day and platelet recovered to more than 30×10 9/L during postoperative 11 day to 28 day). One of them developed a GVHD of degree IV. One of them developed aGVHD of degree I. Conclusion This procedure is much safe, effective and of less complications than the myeloablative condioning regimens and may represent another new approach in the management of patients with chronic leukemia.