DCR: 直肠癌中淋巴细胞与单核细胞和血小板与淋巴细胞比率可以对患者预后进行预测

2022-02-17 MedSci原创 MedSci原创

新辅助化疗是指在实施局部治疗方法(如手术或放疗)前所做的全身化疗,目的是使肿块缩小、及早杀灭看不见的转移细胞,以利于后续的手术、放疗等治疗。对于早期肿瘤患者通常可以通过局部治疗方案治愈。

多模式治疗的发展,包括新辅助化学放射治疗(nCRT),全直肠系膜切除术和辅助化疗在内的多模式治疗的发展,彻底改变了直肠癌的治疗方法,使疾病的局部控制和生存率得到改善。然而,这些改善是以生活质量下降为代价的,因此,治疗策略已更多的转向个性化治疗,特别是对临床分期为T3或T4或结节阳性的患者。准确的肿瘤分期和确定可靠的、可重复的预后因素对于根据复发风险和生存概率对患者进行分层以及选择适当的治疗方法至关重要。肿瘤微环境,特别是炎症反应,可能在癌症的发展和进展中起着关键作用并可能与全身性炎症有关。淋巴细胞与单核细胞比率(LMR)和血小板与淋巴细胞比率(PLR)是基于炎症的评分,最近被确定为一系列实体瘤的预后指标。然而,尽管一些研究显示,低LMR和高PLR与直肠癌的不良生存结果之间存在着显著的相关性,但尚未得到学界的公认。因此,本项研究旨在试图确定直肠癌根治性手术后淋巴细胞与单核细胞比率和血小板与淋巴细胞比率的预后价值。

 

为此,研究人员遵循 PRISMA 指南,搜索了截至 2021 年 1 月为止的 PubMed 和 Embase 数据库中关于直肠癌术后的相关文献报道,选择了淋巴细胞与单核细胞比率和血小板与淋巴细胞比率对接受根治性直肠癌切除术的患者的总体或无病生存期的影响的研究作为被分析的对象。主要观察结局指标是总生存期和无病生存期的差异。

 

本项研究共纳入 23 项文献报道(总共有6683 名患者);在 14 项和 16 项研究中评估了淋巴细胞与单核细胞的比率和血小板与淋巴细胞的比率的差异。较低的淋巴细胞与单核细胞比率与较差的总生存期(HR,1.57;95% CI,1.29-1.90;p < 0.001)和无病生存期(HR,1.29;95% CI,1.13-1.46;p< 0.001)有关。然而,当分析仅限于仅接受手术治疗的患者或 I 至 III 期肿瘤患者时,淋巴细胞与单核细胞的比率不能预测总生存期和无病生存期。无论治疗方式、研究人群、肿瘤分期或临界值如何,血小板与淋巴细胞的比率都不能预测总生存期或无病生存期。最后,淋巴细胞与单核细胞的比率低,但血小板与淋巴细胞的比率不高,与完全病理缓解率呈负相关。

 

本项研究结果证实淋巴细胞与单核细胞的比率,但与血小板与淋巴细胞的比率无关,与肿瘤对新辅助放化疗的反应以及直肠癌根治性手术后较差的预后相关,它可能代表一种简单可靠的生物标志物,有助于优化个体化治疗高危患者的临床决策。

原始出处:

Hamid, Hytham K.S. M.B.B.S. et al. Prognostic Significance of Lymphocyte-to-Monocyte and Platelet-to-Lymphocyte Ratio in Rectal Cancer: A Systematic Review, Meta-analysis, and Meta-regression. Diseases of the Colon & Rectum.2022.

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    2022-02-17 1209e435m98(暂无昵称)

    学习了,谢谢分享

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