BJUI:肿瘤负荷可作为mRCC的独立预后指标

2012-11-28 BJUI BJUI

       一项临床试验显示,肿瘤负荷是转移性肾细胞癌(mRCC)的一个独立性预后指标。该研究发表在《英国国际泌尿学杂志(BJUI)》上。(BJU Int 2012 Oct 26)        该研究结果有助于临床医生更好的对mRCC患者疾病恶化或死亡的风险进行分层评估,帮助医生评估哪些病人将从现有的治

       一项临床试验显示,肿瘤负荷是转移性肾细胞癌(mRCC)的一个独立性预后指标。该研究发表在《英国国际泌尿学杂志(BJUI)》上。(BJU Int 2012 Oct 26

       该研究结果有助于临床医生更好的对mRCC患者疾病恶化或死亡的风险进行分层评估,帮助医生评估哪些病人将从现有的治疗中获益。

       该试验纳入了124名患者,66%的患者分别接受索拉非尼或舒尼替尼治疗,34%的患者接受安慰剂。肿瘤直径的中位数为12.8cm。

       由古斯塔夫•鲁西癌症研究所Roberto Iacovelli带领的研究人员发现,即使根据MSKCC(纪念斯隆-凯特琳癌症中心)风险类别和治疗方案进行调整,肿瘤负荷(RECIST 1.0评价)与无进展生存期(PFS)和总生存期(OS)均有直接且重要的关联。

       该结果经探索性分析证实,肿瘤直径低于中位数12.8cm的患者平均PFS为5.6个月,而肿瘤直径高于中位数的患者平均PFS为4.2个月。肿瘤直径每增加1cm,可导致疾病恶化风险增加4.5%,死亡风险增加5.0%。


肿瘤负荷可作为mRCC的独立预后指标
 
       研究人员指出,过去十年里,大多数临床试验采用MSKCC方法提出多种分类以确定mRCC的预后。直到现在,肿瘤负荷还没有作为mRCC的预后因素,尽管在其他肿瘤类型已有证据。但是,该前瞻性研究发现肿瘤负荷的绝对基准值与OS有直接关系,同时多因素分析显示,其有重要的预测疾病预后作用。

       法国的Laure Fornie教授在相关评论中指出:总的来说,测量肿瘤大小依然是评估病情严重程度和预测肿瘤应答或进展的最简单的方法。

       她补充说:研究重点必须放在找到临床相关标准,引导肿瘤科医生选择治疗方法。因此,肿瘤科医生和放射科医师之间必须继续合作,以更好的了解患者应该何时接受治疗,接受何种治疗,或者何时将不再受益于进一步的治疗。



OBJECTIVE
•To investigate the possible prognostic role of baseline tumour burden (TB) in terms of progression-free survival (PFS) and overall survival (OS), in patients with metastatic renal cell carcinoma (mRCC).

PATIENTS AND METHODS
•A homogenous group of patients with mRCC enrolled in second-line trials post-cytokine treatment were selected for the present analysis.
•The Response Evaluation Criteria in Solid Tumors (the sum of the longest unidimensional diameter of each target lesion) were used to assess TB.
•The PFS and OS rates were estimated using the Kaplan–Meier method and compared across the groups using the log-rank test.
•The association between TB and PFS or OS was evaluated using a Cox proportional hazards model. Multivariable analyses were adjusted for other prognostic variables: the Memorial Sloan Kettering Cancer Centre (MSKCC) risk class and treatment.

RESULTS
•A total of 124 patients were included in the final analysis. Of these, 66% received sorafenib or sunitinib and 34% received placebo. The median follow-up was 80.1 month.
•TB was directly related to PFS and OS and these associations remained significant after adjusting for modified MSKCC risk class and treatment,.
•Each 1-cm increase in TB increased the risk of progression by 4.5% (hazard ratio [HR]: 1.05; 95% confidence interval [CI] 1.02–1.07; P < 0.001) and the risk of death by 5% (HR: 1.05; 95% CI 1.03–1.08; P < 0.001).

CONCLUSIONS
•TB is easy to calculate from standard computed tomography and significantly relates to OS in patients with mRCC.
•We report for the first time the independent prognostic role of baseline TB in multivariate analysis.
•We believe that this information could be translated into clinical practice.

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    2013-02-27 docwu2019
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    2013-08-28 isabellayj
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