Ph染色体阳性成人急性淋巴细胞白血病患者预后相关因素分析

目的　分析影响Ph 成人急性淋巴细胞白血病 (aALL)患者生存的各种相关因素。方法　综合分析 31例Ph aALL相关临床参数 ,观察生存期 ,并进行统计学分析。结果　Ph aALL占所有统计aALL的 15 .3%。临床上表现为年龄偏高 ,白细胞计数、幼稚细胞数高 ,血小板计数较低。免疫分型诊断以Common型为主 (82 .6 % ,2 3例中有 19例 ) ,39.1% (2 3例中有 7例 )协同表达髓系抗原 ,CD34 患者占 5 6 .5 % (2 3例中有 13例 )。缓解率 6 5 .4 % ,中位缓解期 4个月 ,中位生存期 8个月。Ph伴附加染色体异常占Ph阳性总数的 4 2 % ,常见的附加染色体异常包括 - 7, Ph ,del(9) (p11 12 ) ,add/t(16 ) (p13)等。Ph伴附加染色体异常组血小板计数显著低于单纯Ph 组 (P =0 .0 12 )和变异Ph易位组 (P =0 .0 0 1)。免疫分型研究显示CD34 患者组缓解期及生存期显著短于阴性组 (缓解期分别为 0和 9个月 ,P =0 .0 2 4 ;生存期分别为 6个月和 12个月 ,P =0 .0 34) ,但髓系抗原协同表达与否不影响生存期。结论　Ph aALL是一组预后不良的患者群 ,Ph合并附加染色体异常与否和临床异质性无显著相关 ,CD34表达在Ph aALL中是一个不良的预后因素。

Analysis of factors associated with prognosis in patients with Ph chromosome positive adult acute lymphoblastic leukemia

Objective To investigate factors associated with survival of patients with Ph chromosome positive adult acute lymphoblastic leukemia (aALL) in a period of 11 years. Methods All the clinical parameters of 31 Ph positive patients were statistically analyzed by SPSS software. Result Ph patients account for 15.3%(31/203) of all the aALL patients. Clinically, these patients manifested older in age, higher white blood cell counts with high blast fractions and lower platelet counts (PC). Phenotypically 82.6% of them were common ALL, 39.1% coexpressed myeloid antigens, and 56.5% expressed CD34 antigen. 65.4% of them (17/26) achieved complete remission (CR) and the median remission and survival durations were 4 months and 8 months, respectively. Patients with Ph and additional chromosomal aberrations accounted for 42% of all the Ph patients, including monosomy 7, Ph, del(9)(p11 12) and add/t(16)(p13), and they had lower PC as compared with those with sole Ph (P=0.012) and variant Ph translocation (P=0.01). CD34 positive patients had a shorter remission and survival duration than CD34 negative ones (0 vs 9 months for median remission time, P= 0.024 ; and 6 vs 12 months for median survival time, P=0.034). There was no evidence to support the correlation between myeloid antigen expression and survival time in these patients. Conclusion Ph aALL is associated with adverse prognosis and CD34 expression is a poorer prognostic factor in Ph aALL patients. There is no significant clinical difference between Ph aALL with or without additional chromosomal aberrations.