急性髓系白血病微小残留病检测的临床意义

目的探讨微小残留病（MRD）检测在急性髓系白血病预测复发及指导治疗的临床意义。方法选择32例初治急性髓系白血病（除外M3）患者128份标本,利用多参数流式细胞术（FCM）进行微小残留病检测,CD45/SSC设门,选择2-4组四色抗体组合,从诱导化疗后第21天开始,每1-3个月监测一次。结果按照首次诱导治疗后第21天MRD水平将32例AML分为高（MRD〉1×10-2）、中（1×10-2〉MRD〉1×10-4）、低（MRD〈1×10-4）三组。高、中、低三组的2年复发率依次为83.3%、11.1%、0。其中MRD〉1×10-2组2年复发率最高,MRD〈1×10-4组预后好,两组的复发概率差异有统计学意义（P〈0.05）。形态学与MRD动态监测两年结果显示,其中26例缓解,6例复发。6例形态学复发者均在MRD持续阳性4-6个月出现。形态学完全缓解时MRD阳性组与阴性组的复发率有显著性差异（P〈0.05）。结论 MRD〉1×10-2高度提示复发,MRD阳性比形态学复发出现早,连续监测MRD对个体化治疗和预测复发有重要意义。

The clinical significance of minimal residual disease detecting in patient with acute myeloid leukemia

Objective To investigate the clinical significance of minimal residual disease(MRD) detection in patient with acute myeloid leukemia used for predicting relapse and guiding chemotherapy.Methods 128 Bone marrow aspirate were collected from 32 patients with newly diagnosed AML(exclude M3).Selecting 2 -4 antibodies combination,MRD was detected by four-color multiparameter flowcytometry(FCM) with CD45/SSC gating from the 21th days after induction treatment,and was done once more every one or three months.Result...