摘要目的 回顾性分析非血缘脐血移植(UCBT)治疗成人恶性血液病患者的植入、移植相关并发症及生存情况.方法 成人恶性血液病患者28例,进展期20例.单份UCBT 10例,双份UCBT18例.清髓性预处理方案26例,减低强度方案2例.环孢素(CsA)联合霉酚酸酯(MMF)预防移植物抗宿主病(GVHD).结果 26例患者获得稳定造血重建,中性粒细胞绝对计数(ANC)≥0.5×109/L的中位时间为移植后(+)18(+14～+37)d,22例血小板≥20×109/L的中位时间为+30(+25～+49)d.22例经DNA短串联重复系列动态检测+7～+21 d达全供者嵌合.18例(69%)发生急性GVHD,＞Ⅱ度者1例.可评估的22例患者中6例(27%)发生慢性GVHD,均为局限型.18例存活患者的中位随访时间为9.5(2.5～72.0)个月,3年无病生存率为56.7%.复发2例,死亡10例,其中8例死于移植相关并发症.结论 UCBT治疗成人高危恶性血液病安全有效,双份UCBT的开展可进一步扩大移植的范围.

abstractsObjective To analyse the engraftment, transplant-related complications and survival after unrelated cord blood transplantation (UCBT) in patients with hematologic malignancies. Methods Twenty eight consecutive adult patients with hematological malignancies were treated with UCBT and 20 of them were advanced-stage diseases. Double or multiple UCB grafts were used for 18 patients, while single UCB graft for 10 patients. Myeloablative conditioning regimens were given to 26 cases and nonmyeloablative regimens to 2 cases. All patients were given a combination of cyelosporine (CsA) and mycophenolate mofetil (MMF) for graft-versus-host disease (GVHD) prophylaxis. Results Median time to neutrophil engraftment (≥>0.5×109/L) in 26 patients was 18 ( 14-37) days and platelet engraftment (≥>20×109/L) in 22 patients was 30 (25-49) days. Chimerism was weekly assessed by PCR analysis of short tandem repeat (STR) sequences in whole blood or bone marrow and 22 cases were confirmed of fully donor chimeric from 7 to 21 days after transplantation. Eighteen cases developed acute GVHD, greater than grade Ⅱ in 1, and 6 of 22 patients who survived more than 100 days developed limited chronic GVHD. Eighteen cases were alive in hematologic remission at a median follow-up of 9.5 (2.5-72.0) months. The probability of event-free survival at 3 years was 56.7%. Two cases relapsed and 8 of 10 cases died of transplant related complications. Conclusions UCBT could be safely and effectively used for adult patients with hematologic malignancies. Use of double UCB units is a strategy extending the feasibility of UCBT.