急性淋巴细胞白血病患者造血干细胞移植后监测E2A—PBX1融合基因的意义初探

目的观察伴有E2A—PBX1融合基因的急性淋巴细胞白血病(ALL)患者造血干细胞移植后E2A—PBX1融合基因表达水平的变化特点,初步探讨其临床意义。方法回顾性分析2010年12月至2015年1月于北京大学血液病研究所行异基因造血干细胞移植的10例E2A-PBX1融合基因阳性ALL患者临床资料,采用荧光实时定量PCR方法监测E2A.PBX1融合基因水平,分析其水平变化与疾病复发和治疗的相关性。结果10例E2A-PBX1融合基因阳性患者(其中4例为移植前阳性),移植后6例E2A—PBX1基因转阳,中位转阳时问90(75~180)d,第1次转阳基因中位水平为25.200%(0.022%~353.6...

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Published in中华血液学杂志 Vol. 36; no. 12; pp. 989 - 993
Main Author 赵晓甦 秦亚溱 张艳玲 徐永艳 王昱 陈欢 王峰蓉 王景枝 黄晓军
Format Journal Article
LanguageChinese
Published 100044 北京大学人民医院、北京大学血液病研究所,造血干细胞移植治疗血液病北京市重点实验室 2015
血液学协同创新中心
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Summary:目的观察伴有E2A—PBX1融合基因的急性淋巴细胞白血病(ALL)患者造血干细胞移植后E2A—PBX1融合基因表达水平的变化特点,初步探讨其临床意义。方法回顾性分析2010年12月至2015年1月于北京大学血液病研究所行异基因造血干细胞移植的10例E2A-PBX1融合基因阳性ALL患者临床资料,采用荧光实时定量PCR方法监测E2A.PBX1融合基因水平,分析其水平变化与疾病复发和治疗的相关性。结果10例E2A-PBX1融合基因阳性患者(其中4例为移植前阳性),移植后6例E2A—PBX1基因转阳,中位转阳时问90(75~180)d,第1次转阳基因中位水平为25.200%(0.022%~353.600%),从E2A—PBX1基因转阳至血液学复发间隔中位时间30(0~74)d,4例最终血液学复发,中位复发时间为164(75-240)d。6例E2A—PBX1融合基因转阳患者4例死亡,3例死于复发,1例死于弥漫性肺泡大出血。结论伴有E2A—PBX1融合基因ALL患者移植后一旦E2A—PBX1基因转阳,其水平迅速上升,病情进展迅速,预后差。
Bibliography:Objective To investigate the clinical characteristics of E2A-PBX1 (immunoglobulin enhancer binding factor-pre-B leukemia) fusion gene in patients with acute lymphoblastic leukemia (ALL) after allogeneic stem cell transplantation (allo-HSCT). Methods Clinical data of 10 patients received allo-HSCT in Peking University Institute of Hematology from December 2010 to January 2015 were retrospectively collected. The E2A-PBX1 gene was examined by real-time quantitative polymerase chain reaction (RQ-PCR). The correlation between its expression level and the disease status was analyzed. Results Among 10 cases of enrolled ALL, the E2A-PBX 1 expression of six patients converted to positive after transplant at a median time of 90 days (range, 75-180 days). The expression level of the first positive sample was 25.200% (range, 0.022%-353.600%). The duration from E2A-PBX1 positive to hematological relapse was 30 days (range, 0-74 days). Finally, 4 patients underwent relapse at a median time of 164!days (range, 75-240 days)
ISSN:0253-2727
DOI:10.3760/cma.j.issn.0253-2727.2015.12.002