摘要
目的探讨动态监测儿童白血病微量残留病(MRD)对指导B系急性淋巴细胞白血病(B—ALL)治疗的临床意义。方法以2004年1月至2009年12月确诊并完成诱导治疗的81例B—ALL患儿作为研究对象。初诊时用流式细胞术(FCM)筛选白血病细胞标志,随后定时随访。结果81例患儿中80例诱导治疗获缓解,5年无事件生存(EFS)率为(76.80±5.70)%,其中标危组(89.40±5.90)%,中危组(66.99±13.60)%。81例患儿中68例筛选出特异性白血病细胞抗原作为MRD监测标志,13例未筛选出特异性白血病细胞抗原标志,两者5年EFS率分别为(79.10±6.20)%和(62.50±15.10)%,差异无统计学意义(P〉0.05)。诱导治疗第35天MRD检测显示68例患儿中MRD阴性(残留白血病细胞〈0.01%)52例,5年EFS率为(88.50±4.90)%;MRD阳性(残留白血病细胞≥0.01%)16例,5年EFS率为(42.10±20.10)%,差异具有统计学意义(P〈0.05),单因素分析提示MRD监测结果与危险度分层相关。诱导治疗第55天MRD监测显示,诱导第35天MRD阴性的52例患儿中,51例仍为阴性,1例阳性;而16例MRD阳性患者中14例(87.50%)转为阴性,2例仍阳性(后经加强治疗转为阴性)。68例缓解患儿1年内MRD阳性9例(3例复发),1年后MRD阳性4例(2例复发),持续MRD阴性55例(4例复发)。差异有统计学意义(P〈0.05)。结论动态监测B—ALL患儿MRD,可判断预后,及时调整治疗方案,具有重要临床意义。
Objective To study the clinical significance of sequentially monitoring minimal residual disease(MRD) in childhood B-cell acute lymphoblastic leukemia(B-ALL). Method Eighty one B-ALL cases were enrolled in the study from January 2004 to December 2009. Leukemia cell markers were detected by flow cytometry at diagnosis, then regularly followed-up. Results Of 81 cases, 80 achieved complete remis- sion (CR) after induction therapy, 5-year event-free survival (EFS) was (76.80±5.70)%. Among them, the EFS was (89.40 ±5.90) % in standard risk group and(66.99 ±13.60)% in intermediate risk group. Eight eases were screened for leukemia markers for MRD monitoring and identified in 68 ; and 5-year EFS was (79.10±6.20) % and (62.50 ±15.10) % (P 〉 0.05, respectively). MRD detection at day 35 in induetion therapy showed that 52 of 68 eases were MRD negative (leukemia cells 〈 0.01% ) , the 5-year EFS being (88.50 ±4.90)%, and 16 were MRD positive (leukemia cells ≥0.01% ), the 5-year EFS being (42.10±20. 10)% (P 〉 0.05). Univariate analysis confirmed that there was a correlation between MRD monitoring and risk stratification. MRD detection at day 55 showed that among the 52 day 35 MRD negative eases, 51 were still negative, 1 positive, among 16 day 35 MRD positive eases, 14(87.50% ) turned nega- tive, 2 still positive. Of the 68 eases, 9 were MRD positive within one year after CR (3 relapsed), 4 MRD positive after one year (2 relapsed) and 55 MRD negative (4 relapsed) (P 〉 0.05 ). Conclusions Sequential monitoring MRD can find out treatment outcome and adjust therapy in time.
出处
《中华血液学杂志》
CAS
CSCD
北大核心
2011年第6期400-403,共4页
Chinese Journal of Hematology
关键词
儿童
白血病
B细胞
急性
微量残留病
流式细胞术
Children
Leukemia,B-cell, acute
Minimal residual disease
Flow eytometry