双表型急性白血病流式细胞术免疫分型检测结果

目的 应用流式细胞术(FCM)检测双表型急性白血病(BAL)的免疫表型.方法 采用四色FCM检测23例BAL患者的免疫表型.结果 23例BAL患者中有10例(43.4%)表达cCD3,16例(69.6%)表达cCD79a,20例(87.0%)表达cMPO,14例(60.9%)表达TdT,19例(82.6%)表达CD34,20例(87.0%)表达CD117,同时表达髓系和B系抗原者13例(56.5%),均共同表达cCD79a和cMPO;同时表达髓系和T系抗原者7例(30.4%),均共同表达cCD3和cMPO;同时表达T系和B系抗原者3例(13.04%),均共同表达cCD3和cCD79a.结论 cCD3、cCD79a、cMPO为系列特异性抗原标志,对诊断及鉴别BAL具有重要意义,FCM是目前诊断BAL特异口靠的方法,在临床白血病治疗和预后方面有重要的指导意义.

Immunophenotype of double acute leukemia detected by flow cytometry

Objective To detect double immuno-phenotype of acute leukemia by the application of flow cytometry (FCM). Methods Four-color FCM was used to analyse 23 cases of acute leukemia of double immune phenotype. Results Among 23 cases, cCD3 was expressed in 10 cases (43.4 %), cCD79a in 16 cases (69.6 %), cMPO in 20 cases (87.0 %), TdT in 14 cases (60.9 %), CD34 in 19 cases (82.6 %) and CD117 in 20 cases (87.0 %). 13 cases (56.5 %) expressed both myeloid and B lymphocyte antigens, in which cCD79a and cMPO were positively expressed, 7 cases (30.4 %) were found to express both myeloid and T lymphocyte antigens of cCD3 and cMPO 3 cases (13.04 %) were positive for both cCD3 and cCD79a. Conclusion cCD3,cCD79a, and cMPO were lineage specific antigen markers, which could be used for diagnosis and differential double phenotype leukemias. FCM is a useful and reliable method for diagnosis of acute leukemia, and guidance of treatment and prognosis of leukemia in clinical.