机构地区:[1]华南肿瘤学国家重点实验室/中山大学肿瘤防治中心神经外科,广东广州510060 [2]第四军医大学唐都医院神经外科,陕西西安710038 [3]华南肿瘤学国家重点实验室/中山大学肿瘤防治中心临床试验中心,广东广州510060 [4]华南肿瘤学国家重点实验室/中山大学肿瘤防治中心病理科,广东广州510060
出 处:《中国神经肿瘤杂志》2012年第3期158-165,共8页Chinese Journal of Neuro-Oncology
摘 要:背景与目的:替莫唑胺(temozolomide,TMZ)国内外多推荐为胶质瘤的一线化疗药物,化疗周期通常为六周期。长周期(超过六周期)TMZ治疗胶质瘤国外已有多篇文献报道,但中国脑胶质瘤患者这方面信息较少。本文总结我们近年来长周期TMZ治疗32例胶质瘤的临床经验,重点探讨其安全性。方法:32例高级别胶质瘤(high—gradegliomas,HGGs)或低级别胶质瘤(10w—gradegliomas,LGGs)采用了TMZ长周期治疗。TMZ化疗方案的选择基于肿瘤组织DNA甲基转移酶(06-ethylguanine—DNAmethyhransferase,MGMT)的免疫组化检测结果,用甲基化特异PCR(MSP—PCR)检测了其中6例的MGMT启动子甲基化程度。MGMT阴性表达(±或-)者接受TMZ标准化疗(200mg/(m2·d),d1-5,四周方案),MGMT阳性表达(+或++)者接受TMZ剂量密度方案[75mg/(m2·d),d1-21,4周方案],或顺铂(cisplatin,DDP)联合TMZ化疗方案[DDP75mg/(m2·d),dl-2;TMZ200mg/(m2·d),d2-6,四周方案1。结果:32例患者共接受318周期TMZ方案化疗。患者化疗周期数为7~24(中位周期数为9.4)。最常见的严重毒性反应是Ⅲ度淋巴细胞减少症与白细胞减少症,发生率均为9.4%(3/32)。最常见的轻至中度毒性反应依次为疲乏(86.9%)、中性粒细胞减少症(46.9%)、脱发(46.9%)、血小板减少症(40.6%)、便秘(41.2%)及淋巴细胞减少症(25.0%)等。中位无进展生存(progressfreesurvival,PFS)为28.6月。6月PFS、12月PFS分别为100%与71%。32例患者中,15例肿瘤完全切除,至今无病生存。依据意向性治疗原则(intention—to—treatprinciple,11Tr),1例(3.1%)取得完全缓解(completeresponse,CR),14例(43.8%)微效(minorresponse,MR),2例(6.2%)稳定(stabledisease,SD)。总反应率(overallresponserate,ORR)为81.5%(95BACKGROUND & OBJECTIVE: The 6-cycle regimen of temozolomide (TMZ) has been used for gliomas as a standard chemotherapy. This article is to review our experience of 32 patients with highgrade gliomas (HGGs) and low-grade gliomas (LGGs) with extend TMZ chemotherapy (more than 6 cycles). METHODS: The regimen of TMZ chemotherapy was selected based on MGMT expression of the tumor. Additionally, MGMT promoter methylation status is performed in 6 patients of them. Patients with MGMT-negative tumors (± or -) had received the standard dosing regimen (200 mg/m2 for 5 days every 28 days). While patients with MGMT-positive tumors (++ or +) were treated with TMZ (75 mg/m2 Day 1-21)using the 3-weeks-on/I-week-off (21 of 28 days) schedule, or the adjusted regimen of cisplatin plus TMZ (cisplatin 75 mg/m2 on Day 1 and 2, TMZ 200 mg/m2 on Day 2 to 6, every 28 days). RESULTS: About 318 cycles of TMZ were administered to the 32 patients. The number of TMZ cycles administered per patient ranged from 7 to 24 (median = 9.4 cycles). Myelosuppression including lymphopenia and leukopenia were the most common high grade toxicities (grade 3), both occurring in 9.4 % (3 / 32) of patients. The most frequent toxicities were fatigue (86.9 %), neutro penia(46.9 %),alopecia (46.9 %), and so on. The median progress free survival (PFS) was 28.6 months. Six month PFS and 12 month PFS were 100% and 71% respectively. And 15 out of the 32 patients received gross total resection, showing no evidence of disease. According to intention-to-treat principle, one patient (3.1% ) demonstrated a complete response (CR), 14 patients (43.8 %) demonstrated a minor response (MR), and two patients (6.2 %) demonstrated stable disease (SD); the overall response rate (ORR) was 81.5 % ( 95% CI, 50%-96%) and the disease control rate (DCR) was 89.2% ( 95% CI, 64%-98%). CONCLUSION: Extended use of TMZ based on MGMT expression pattern is safe to patie
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