[老年NSCLC患者化疗耐受性meta分析] 化疗耐受性什么意思

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  肺癌占各种恶性肿瘤发病率之首位,每年约有135万新诊断的肺癌患者,死亡118万[1]。非小细胞肺癌(NSCLC)约占肺癌发病率的80%~85%[2]。据美国国立癌症研究所流行病学监测结果报告:NSCLC在65岁以下人群的发病率是20.2/10万,65岁以上人群的发病率是306.1/10万,被诊断为NSCLC的患者50%超过65岁,其中70岁以上的病例占30%,NSCLC是一种老年疾病[3-6]。对于老年癌症患者的定义目前仍然存在争议,流行病学通常将65岁以上的患者称之为老年人,在肿瘤学常将70岁以上的患者定义为老年患者[7],对老年NSCLC的化疗是临床医生面对的重要课题之一。由于老年人伴随着年龄的增长器官功能衰退、药代酶活性下降等生理因素,常合并其他疾病等原因,老年人的药效学和药动学也随之发生变化[8],老年NSCLC化疗的潜在毒性危险可能增加。目前国内外对老年NSCLC化疗的研究很少,而且结果不一,因此笔者对国外的一些资料进行Meta分析,以期为老年NSCLC化疗提供参考。�
  1 资料与方法�
  1.1 纳入和排除标准 资料纳入标准:①公开发表的原始文献;②随机、对照的临床研究或设计良好的非随机临床研究;③年龄组群[9-16]。
  
  选中的4号文献(Schild SE 2003)虽然化疗联合了同步放疗,但是对本文的最终结果无影响,纳入研究;第1和2号(Chen YM 2000和Chen YM 2002)、第4和6号(Schild SE 2003 和Schild SE 2005)资料是同一作者研究同一问题,在分析中按就近原则只选用年代最近的资料。�
  1.3 研究对象 老年NSCLC化疗耐受性研究主要涉及化疗毒性反应,在研究中对毒性反应(Leukopenia、netropenia、anemia、thrombocytopenia、Nausea/vomiting、neurotoxicity、infection)进行了分层分析。�
  1.4 暴露因素和干预措施 本研究是对公开发表的文献应用Review Manager4.2软件进行Meta分析,我们以≥70岁界定为老年患者,研究的最终目的主要是老年NSCLC患者对化疗的耐受性,年龄为暴露因素和干预措施。�
  1.5 统计学方法 应用Cochrane协作网系统提供的Review Manager4.2软件完成统计分析。�
  2 结果�
  2.1 异质分析 分析结果显示, Leukopenia,P=0.09; netropenia , P=0.51;anemia,P=0.34;thrombocytopenia,P=0.38;Nausea/vomiting,P=0.45;neurotoxicity,P=0.10;infection,P=0.23;所有P>0.05,因此认为各研究同质性较好,可用固定效应模型进行分析。�
  2.2 结果分析�
  
  2.2.1 ≥3度Leukopenia 见图1,4组资料共1171例,第2组资料(Langer CJ 2002)OR=0.38,95%CI 0.23-0.64,位于垂直线左侧,0.05);白细胞减少发生率≥70岁患者高于   [3] Bunn PA, Lilenbaum R.Chemotherapy for elderly patients with advanced non-small-cell lung cancer.J Natl Cancer Inst 2003; 95:341-343.�
  [4] Weir HK, Thun MJ, Hankey BF, et al.Annual report to the nation on the status of cancer, 1975-2000, featuring the uses of surveillance data for cancer prevention and control.J Natl Cancer Inst.2003 Sep 3;95(17):1276-99.�
  [5] Gridelli C, Maione P,Comunale D,et al.Cancer statistics, 1998.CA Cancer J Clin.1998;48(1):6-29.�
  [6] Gridelli C, Perrone F, Gallo C, et al.Vinorelbine is well tolerated and active in the treatment of elderly patients with advanced non-small cell lung cancer: a two-stage phase II study.Eur J Cancer 1997; 33, 392-397.�
  [7] Gridelli C, Cigolari S, Gallo C, et al.Activity and toxicity of gemcitabine and gemcitabine + vinorelbine in advanced non-small-cell lung cancer elderly patients: phase II data from the Multicenter Italian Lung Cancer in the Elderly Study (MILES) randomized trial.Lung Cancer 2001;31,277-284.�
  [8] Gridelli C, Maione P, Comunale D, et al.Adjuvant chemotherapy in elderly patients with non-small-cell lung cancer.Cancer Control.2007 Jan;14(1):57-62.�
  [9] Chen YM, Perng RP, Yang KY, et al.A multicenter phase II trial of vinorelbine plus gemcitabine in previously untreated inoperable (stage IIIB/IV) non-small-cell lung cancer.Chest 2000; 117:1583-1589.�
  [10] Chen YM, Perng RP, Lee YC, et al.Paclitaxel plus carboplatin, compared to paclitaxel plus gemcitabine, shows equal efficacy while more cost-effectiveness: a randomized study of combination chemotherapy against inoperable non-small-cell lung cancer previously untreated.Ann Oncol 2002; 13:108-115.�
  [11] Langer CJ, Manola J, Bernardo P, et al.Cisplatin-based therapy for elderly patients with advanced non-small-cell lung cancer: implications of Eastern Cooperative Oncology Group 5592, a randomized trial.J Natl Cancer Inst.2002 Feb 6;94(3):173-181.�
  [12] Schild SE, Stella PJ, Geyer SM, et al.The Outcome of Combined-Modality Therapy for Stage III Non-Small-Cell Lung Cancer in the Elderly.J Clin Oncol.2003 Sep 1;21(17):3201-3206.�
  [13] Hensing TA, Peterman AH, Schell MJ, et al.The impact of age on toxicity, response rate, quality of life, and survival in patients with advanced, Stage IIIB or IV nonsmall cell lung carcinoma treated with carboplatin and paclitaxel.Cancer.2003 Aug 15;98(4):779-788.�
  [14] Schild SE, Stella PJ, Brooks BJ, eta al.Results of combined-modality therapy for limited-stage small cell lung carcinoma in the elderly.CANCER June 1, 2005, 103 ,11:2349-2354.�
  [15] Weiss GJ, Langer C, Rosell R, et al.Elderly Patients Benefit From Second-Line Cytotoxic Chemotherapy: A Subset Analysis of a Randomized Phase III Trial of Pemetrexed Compared With Docetaxel in Patients With Previously Treated Advanced Non-Small-Cell Lung Cancer.J Clin Oncol.2006 Sep 20;24(27):4405-4411.�
  [16] Chen YM, Perng RP, Shih JF, et al.Chemotherapy for Non-small Cell Lung Cancer in Elderly Patients*.Chest.2005 Jul; 128(1):132-139.

推荐访问:化疗 老年 患者 耐受性

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