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217例成人急性淋巴细胞白血病遗传学特征及其临床预后意义的研究 被引量:9

Genetic characteristics and its prognostic significance for 217 adult patients with acute lymphoblastic leukemia
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摘要 目的研究成人急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)的细胞和分子遗传学特征及其临床预后意义。方法通过常规细胞遗传学、荧光原位杂交、实时定量多聚酶链反应、巢式PCR扩增及测序等技术相结合,对217例成人ALL患者细胞及分子遗传学特征全面分析,并探讨其临床预后意义。结果成人ALL遗传学异常以t(9;22)(q34;q11)/BCR-ABL融合基因最常见(56.3%),其次为复杂核型(13.8%),其它异常占29.9%;经荧光原位杂交确诊BCR/ABL融合基因阳性患者中22.4%经常规细胞遗传学检测未发现Ph染色体;遗传学预后分组高危组患者随年龄增大递增;高危组辟ALL亚型高于标危组(98.4%vs.65.7%,P=0.000),高危组3个月(67.3%弧85.1%,P=0.042)、6个月(55.1%vs.80.4%,P=0.008)、12个月(34.0%VS.59.1%,P=0.017)和24个月(13.0%725.36.6%,P=0.010)总生存(overall survival,OS)率均显著低于标危组,中位OS时间高危组(11个月,95%CI:8.0~13.9)比标危组(19个月,95%cI:10.8~27.1)显著缩短(P=0.001)。结论成人ALL具有特征性遗传学异常,本组预后分组对判断患者预后、指导临床正确分层治疗具有一定临床意义。临床上单独应用常规细胞遗传学检测漏诊率高,建议常规细胞遗传学检测、荧光原位杂交技术和分子生物学技术相结合,提高细胞及分子遗传学亚型的正确诊断水平。 Objective To evaluate cyto- and molecular genetic characteristics of adult patients with acute lymphoblastic leukemia (ALL) and its prognostic significance. Methods Two hundred and seventeen adult patients with ALL were analyzed for cyto- and molecular genetic characteristics with combined conventional cytogenetica, fluorescence in situ hybridization (FISH), real-time quantitative PCR (qPCR) and nested PCR. Significance of genetic findings for prognosis was evaluated. Results t(9;22) (q34;q11)/ BCR-ABL has been the most frequent abnormality found in the cohort (56.3%). And 22.4% of cases with BCR-ABL detected by FISH was negative by cytogenetic analysis. Ratio of patients in high-risk group increased with age; Patients with B-ALL had a higher risk than the average-risk group (98. 400/00 vs. 65.70%, P=0.000). The overall survival (OS) rates at 3-month (67. 300/00 vs. 85. 10%, P=0.042), 6-month (55.1% vs. 80. 4%, P=0. 008), 12-month (34. 0% vs. 59. 1%, P=0. 017) and 24-month (13.0% vs. 36.6%, P=0. 010) were lower in high-risk than in average-risk group, with medium OS time (11 months, 95% CI 8.0-13.9) was significantly shorter compared with average - risk group (19 months,95%CI 10. 8-27. 1). Conclusion Adult patients with ALL have unique cyto- and molecular genetic characteristics, which has important value for prognosis and guiding treatment. Moreover, combined cytogenetic and molecular genetic techniques can precisely define sub-groups of ALL patients.
出处 《中华医学遗传学杂志》 CAS CSCD 北大核心 2013年第2期129-133,共5页 Chinese Journal of Medical Genetics
基金 国家自然科学基金面上项目(30973376,81270613) 江苏省自然科学基金(BK2009442) 江苏省医学重点人才(RC2011077) 中国博士后科学基金(20090461134、201003598) 教育部“留学回国人员科研启动基金”(第39批) 江苏省“六大人才高峰”资助(2010-WS-024) 国家临床重点专科建设项目(2011)
关键词 急性淋巴细胞白血病 遗传学特征 预后 Acute lymphoblastic leukemia Genetic features Prognosis
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