老年正常核型急性髓系白血病的臨床特征及預(yù)后分析
發(fā)布時(shí)間:2018-09-01 13:32
【摘要】:研究背景急性髓系白血病(AML)是一種具有高度異質(zhì)性的造血干細(xì)胞惡性克隆疾病。其中老年AML患者占總AML患者的50%以上,且發(fā)病率逐年提高。與年輕AML患者相比,老年AML患者有不同的生物學(xué)及臨床特征,其預(yù)后差,與高齡、化療耐受差、一般狀況差、并發(fā)癥多、更易有異常細(xì)胞遺傳學(xué)等因素有關(guān)。細(xì)胞遺傳學(xué)在AML的預(yù)后有十分重要的作用,根據(jù)NCCN指南,CN-AML(正常核型AML)歸為預(yù)后中危組,但此類患者仍表現(xiàn)高度異質(zhì)性,在初治的老年AML中,約有45-50%患者表現(xiàn)為正常核型(CN-AML)。老年CN-AML的臨床及預(yù)后尚不明確,因此,對(duì)這類患者進(jìn)行研究,有助于對(duì)其進(jìn)行分層,為個(gè)體化治療提供依據(jù)。研究目的回顧性分析104例老年CN-AML患者(年齡≥60歲)的臨床特征及療效,并分析影響其預(yù)后的相關(guān)因素。材料與方法回顧性分析2012年1月1日至2016年1月1日就診于鄭州大學(xué)第一附屬醫(yī)院的104例初發(fā)老年(≥60歲)CN-AML(非M3)患者的臨床資料。其中M01例,M16例,M245例,M410例,M538例,M64例。原發(fā)AML患者88例,繼發(fā)AML患者16例(均繼發(fā)于骨髓增生異常綜合癥(MDS))。收集資料包括患者年齡、性別、初診時(shí)臨床癥狀、合并疾病、血常規(guī)、骨髓細(xì)胞學(xué)免疫分型、分子生物學(xué)改變、細(xì)胞遺傳學(xué)改變以及誘導(dǎo)緩解情況等。免疫表型分析采用流式細(xì)胞術(shù)分析。急性髓系白血病預(yù)后基因突變檢測(cè)采用PCR法,染色體分析采用G顯帶法,患者CCI評(píng)分根據(jù)Charlson合并指數(shù)。使用卡方檢驗(yàn)分析完全緩解(CR)的影響因素。生存分析采用Kaplan-Mier生存曲線,并使用Log-rank檢驗(yàn)對(duì)預(yù)后相關(guān)影響因素進(jìn)行單因素分析,多因素分析采用COX回歸模型。P值0.05為差異有統(tǒng)計(jì)學(xué)意義。結(jié)果1.104例初治老年CN-AML患者,男60例(57.7%),女44例(42.3%),中位年齡67歲(60-89歲),初診時(shí)白細(xì)胞計(jì)數(shù)(WBC)12.50×109/L(0-285×109/L),血紅蛋白(Hb)79g/L(35-139 g/L),血小板計(jì)數(shù)(Plt)36×109/L(3-397×109/L),中性粒細(xì)胞計(jì)數(shù)1×109/L(0-220×109/L),骨髓原始細(xì)胞≥50%者59例(56.7%),骨髓原始細(xì)胞50%者45例(43.3%)。CD34、CD38、CD7、CD19、CD56表達(dá)陽(yáng)性率分別為47.1%、92.6%、16.8%、4.2%、7.4%。2.104例患者,首次化療后達(dá)CR率為38.9%,總有效率(ORR)為55.6%;化療2療程達(dá)CR率為54.2%,ORR為56.9%。WBC100×109/L(P=0.02)、NPM1突變陽(yáng)性(χ2=6.876,P=0.009)的患者的CR率較高。3.104例患者平均OS是12.5個(gè)月,中位OS是6.9個(gè)月。單因素分析顯示年齡(≥70歲),繼發(fā)AML,高白細(xì)胞計(jì)數(shù)(≥100×109/L),FLT3-ITD突變陽(yáng)性,CD7陽(yáng)性、達(dá)CR誘導(dǎo)療程(2個(gè))以及CCI評(píng)分≥2分的患者OS較短(P0.05)。多因素分析顯示FLT3-ITD突變陽(yáng)性(HR:7.61,95%CI:1.80-32.11,p=0.006)及達(dá)CR誘導(dǎo)療程(2個(gè))(HR:10.11,95%CI:2.38-43.03,p=0.002)是患者OS的獨(dú)立預(yù)后因素。結(jié)論1.老年CN-AML患者的臨床特征有發(fā)熱、貧血、出血及淋巴結(jié)腫大、肝脾腫大、胸骨壓痛。2.老年CN-AML患者預(yù)后是多種因素綜合作用的結(jié)果,FLT3-ITD突變陽(yáng)性、達(dá)CR誘導(dǎo)療程(2個(gè))是老年CN-AML患者OS的獨(dú)立影響因素。
[Abstract]:Background Acute myeloid leukemia (AML) is a highly heterogeneous malignant clonal disease of hematopoietic stem cells. The middle and aged AML patients accounted for more than 50% of the total AML patients, and the incidence increased year by year. Compared with the young AML patients, the elderly patients with AML have different biological and clinical characteristics, and their prognosis is poor, which is related to the old age, poor tolerance to chemotherapy, poor general condition, more complications and more abnormal cytogenetics. Cytogenetics plays an important role in the prognosis of AML. According to the NCCN guidelines, CN-AML (normal karyotype AML) is classified as a prognostic risk group, but this group of patients is still highly heterogeneous. In the newly treated elderly AML, about 45-50% of the patients showed normal karyotype (CN-AML). The clinical and prognosis of elderly CN-AML is not clear. Therefore, the study of this kind of patients is helpful to stratify them and provide basis for individualized treatment. Objective to retrospectively analyze the clinical features and efficacy of 104 elderly patients with CN-AML (age 鈮,
本文編號(hào):2217359
[Abstract]:Background Acute myeloid leukemia (AML) is a highly heterogeneous malignant clonal disease of hematopoietic stem cells. The middle and aged AML patients accounted for more than 50% of the total AML patients, and the incidence increased year by year. Compared with the young AML patients, the elderly patients with AML have different biological and clinical characteristics, and their prognosis is poor, which is related to the old age, poor tolerance to chemotherapy, poor general condition, more complications and more abnormal cytogenetics. Cytogenetics plays an important role in the prognosis of AML. According to the NCCN guidelines, CN-AML (normal karyotype AML) is classified as a prognostic risk group, but this group of patients is still highly heterogeneous. In the newly treated elderly AML, about 45-50% of the patients showed normal karyotype (CN-AML). The clinical and prognosis of elderly CN-AML is not clear. Therefore, the study of this kind of patients is helpful to stratify them and provide basis for individualized treatment. Objective to retrospectively analyze the clinical features and efficacy of 104 elderly patients with CN-AML (age 鈮,
本文編號(hào):2217359
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