PD-1抑制剂替雷利珠单抗治疗晚期恶性肿瘤的药理作用与临床评价

罗详冲, 王周清, 李琼艳, 毛贵兵, 安乐, 朱家宏, 陶娥红, 孙丽飞, 王胜飞, 李高峰

罗详冲, 王周清, 李琼艳, 毛贵兵, 安乐, 朱家宏, 陶娥红, 孙丽飞, 王胜飞, 李高峰. PD-1抑制剂替雷利珠单抗治疗晚期恶性肿瘤的药理作用与临床评价[J]. 协和医学杂志, 2022, 13(4): 679-686. DOI: 10.12290/xhyxzz.2021-0691
引用本文: 罗详冲, 王周清, 李琼艳, 毛贵兵, 安乐, 朱家宏, 陶娥红, 孙丽飞, 王胜飞, 李高峰. PD-1抑制剂替雷利珠单抗治疗晚期恶性肿瘤的药理作用与临床评价[J]. 协和医学杂志, 2022, 13(4): 679-686. DOI: 10.12290/xhyxzz.2021-0691
LUO Xiangchong, WANG Zhouqing, LI Qiongyan, MAO Guibing, AN Le, ZHU Jiahong, TAO E'hong, SUN Lifei, WANG Shengfei, LI Gaofeng. Pharmacological Effects and Clinical Evaluation of PD-1 Inhibitor of Tislelizumab in the Treatment of Advanced Malignant Tumors[J]. Medical Journal of Peking Union Medical College Hospital, 2022, 13(4): 679-686. DOI: 10.12290/xhyxzz.2021-0691
Citation: LUO Xiangchong, WANG Zhouqing, LI Qiongyan, MAO Guibing, AN Le, ZHU Jiahong, TAO E'hong, SUN Lifei, WANG Shengfei, LI Gaofeng. Pharmacological Effects and Clinical Evaluation of PD-1 Inhibitor of Tislelizumab in the Treatment of Advanced Malignant Tumors[J]. Medical Journal of Peking Union Medical College Hospital, 2022, 13(4): 679-686. DOI: 10.12290/xhyxzz.2021-0691

PD-1抑制剂替雷利珠单抗治疗晚期恶性肿瘤的药理作用与临床评价

基金项目: 

国家自然科学基金 81760554

云南省万人计划“名医”专项 C20096

云南省卫生健康委员会医学领军人才培养计划 L-2019028

详细信息
    通讯作者:

    李高峰, E-mail:ligaofenghl@126.com

  • 中图分类号: R979.1

Pharmacological Effects and Clinical Evaluation of PD-1 Inhibitor of Tislelizumab in the Treatment of Advanced Malignant Tumors

Funds: 

National Natural Science Foundation of China 81760554

The"Famous Doctor"Special Project of Ten Thousand People Plan of Yunnan Province C20096

Medical Leading Talents Training Program of Yunnan Provincial Health Commission L-2019028

More Information
  • 摘要: 近年来, 免疫治疗在恶性肿瘤领域取得了革命性突破, 越来越多的新型免疫检查点抑制剂问世, 彻底改变了恶性肿瘤的一线、二线和后线治疗选择。替雷利珠单抗是中国自主研发的PD-1抑制剂, 该药在经典型霍奇金淋巴瘤、尿路上皮癌、非小细胞肺癌、肝细胞癌、食管鳞状细胞癌和胃癌/胃食管交界癌等肿瘤治疗中均表现出良好的抗肿瘤潜力和安全性。本文就替雷利珠单抗的结构与作用机制、药效学与药代动力学、临床研究及不良反应等方面的最新进展进行阐述, 以期为临床医师提供借鉴和参考。
    Abstract: In recent years, immunotherapy has made breakthroughs in the field of malignant tumors, and more and more novel immune checkpoint inhibitors have been developed, revolutionizing the first-line, second-line and post-line treatment options for malignant tumors. Tislelizumab is a domestically developed inhibitor of programmed death-1 (PD-1). The drug has shown good antitumor potential and safety in classical Hodgkin's lymphoma, uroepithelial carcinoma, non-small cell lung cancer, hepatocellular carcinoma, esophageal squamous cell carcinoma and gastric cancer/gastroesophageal junction carcinoma. In this review, the structure and mechanism of action, pharmacodynamics and pharmacokinetics, clinical research and adverse reactions of tislelizumab are reviewed to provide reference for clinical application.
  • 腹主动脉瘤的定义是动脉管壁永久性局限性扩张超过正常血管直径的50%或主动脉直径>3 cm[1],该病在50岁以上男性发病率(4%~8%)高于同龄女性(1%~1.3%)[2]。1991年Parodi等[3]首次报道了腹主动脉瘤腔内修补术(endovascular aneurysm repair,EVAR),即在血管腔内置入人工覆膜支架,重建血流通道,避免瘤体受到腹主动脉高压血流冲击发生破裂。与传统开放手术相比,EVAR微创、安全,可显著降低围手术期死亡率[4-6],内漏是其常见并发症,发生率达16%~33%[7-9],但发生内漏的动脉瘤,其破裂风险不一定增加[10-11],故以内漏评估EVAR的疗效并不准确。

    动脉瘤体积增大是动脉瘤破裂最重要的预测指标[12-13],但传统动脉瘤体积测量过程繁琐、耗时,而CT纹理分析是近年广泛应用的一种图像后处理技术,通过量化分析图像像素灰度值的局部特征、变化规律及分布模式,定量鉴别特定区域的异质性[14],已广泛应用于淋巴瘤、食管癌和结直肠癌等肿瘤的分型分析、治疗前评估及疗效预测[15-19]。EVAR术后CT信号的异质性提示血管壁发生结构改变[20-21],可能与动脉瘤体积增大直接相关。

    目前鲜有将CT纹理分析应用于动脉瘤预后监测的报道,本研究通过对EVAR术后动脉瘤进行CT纹理分析,探究其与动脉瘤体积变化的关系,以期为临床提供一种更准确、简便的风险分层方法。

    回顾性收集2014年7月至2019年6月于北京协和医院放射科行腹盆部增强CT血管造影(computed tomography angiography,CTA)随访的EVAR术后患者的临床及影像学资料。

    纳入标准:(1)肾下型腹主动脉瘤EVAR术后;(2)术后第3和12个月在本院规律随访,并完成两次腹盆CTA者。

    排除标准:(1)合并其他腹盆腔脏器严重疾病,影响腹主动脉瘤轮廓准确识别者;(2)合并主动脉夹层或大动脉炎等其他血管疾病者。

    本研究通过中国医学科学院北京协和医院伦理审查委员会审查(审批号:S-K1016)。

    采用高压注射器由患者右肘正中静脉注射造影剂碘普罗胺(370 mg/ml,上海博莱科信谊药业有限责任公司)90 ml,流速4.0 ml/s。患者取仰卧位,双手上举过头,扫描范围自膈肌水平至耻骨联合水平。采用第一代双源CT(德国西门子)智能触发扫描,触发层面为腹腔干水平腹主动脉,触发阈值100 HU,触发后立刻扫描动脉期图像,25 s后采集门脉期图像。扫描参数:管电压120 kV,管电流200 mA,机架旋转时间330 ms,准直器2.0 mm×32.0 mm×0.6 mm,螺距0.8 mm。

    将增强动脉期图像导入飞利浦重建工作站,利用后处理软件测量数据。使用画笔工具,以逐节方式手动勾勒主动脉外轮廓,体积测量范围从较低一侧肾动脉水平到两侧髂总动脉分叉水平[10, 22-25],包括给定解剖区域内的正常主动脉及瘤体边缘的任何钙化和附壁血栓,排除所有瘤体分支血管。勾勒完成后计算机自动计算体积大小。

    术后两次随访的动脉瘤体积差大于2%定义为瘤体体积增大,反之定义为瘤体未增大[10, 26]。根据动脉瘤体积变化情况,将入组患者分为动脉瘤体积增大组和体积未增大组。

    取术后第1次随访时动脉期图像中动脉瘤囊轴位最大层面,使用分割软件MATLAB手动勾勒动脉瘤的轴位最大截面,将勾勒好的图像交第三方公司进行纹理分析。采用灰度矩阵提取感兴趣区(region of interest,ROI)血栓部分的纹理特征,生成ROI内的纹理特征值后,输入由神经网络生成的分类器中,得到最终分类结果。此过程中第三方公司并不知晓患者体积分组情况。

    采用3种灰度矩阵提取纹理特征,分别为灰度共生矩阵(grey level co-occurrence matrix,GLCM)、灰度游程矩阵(grey level run length matrix,GLRLM)和灰度差分矩阵(grey level difference matrix,GLDM)。这3种矩阵可获得像素对或像素组间灰度值的二阶或更高阶统计关系,描述图像内容的纹理特征。GLCM描述像素距离和角度的二阶联合条件概率密度函数,体现像素灰度值的空间关系;GLRLM提取高阶纹理信息的二维矩阵,为与GLCM可比,计算4个方向的GLRLM矩阵,并将灰色级数保持在16;GLDM基于两个具有特殊关系像素点的出现概率,特殊关系指这两个像素点间的位移差和灰度值差固定,同GLCM一样,计算动脉瘤内4个方向的平均分布。

    采用SPSS22.0软件进行统计分析。符合正态分布的计量资料以均数±标准差表示,组间比较采用配对样本t检验;不符合正态分布的计量资料以中位数(四分位数)表示,采用Wilcoxon秩和检验。受试者工作特征曲线(receiver operation characteristic curve,ROC)下面积(area under curve,AUC)用于评估纹理分析效果。P<0.05为差异具有统计学意义。

    共70例符合纳入和排除标准的腹主动脉瘤患者入选本研究(图 1),男性62例,女性8例,平均年龄(68.8±8.6)岁,60岁以上患者61例(87.1%,61/70),既往史中有高血压、冠状动脉粥样硬化性心脏病、吸烟、2型糖尿病者分别为44例(62.9%,44/70)、38例(54.3%,38/70)、35例(50.0%,35/70)、14例(20.0%,14/70)。

    图  1  本研究入选病例纳入流程图

    70例患者中,29例(41.4%,29/70)出现EVAR术后腹主动脉瘤体积增大,41例(58.6%,41/70)瘤体未增大(表 1)。

    表  1  腹主动脉瘤腔内修补术后动脉瘤体积的变化[M(P25, P75), cm3]
    分组 术后3个月 术后12个月 Z P
    体积增大组(n=29) 114.6(88.7,226.2) 123.4(91.8,241.5) -4.703 <0.01
    体积未增大组(n=41) 127.0(97.4,196.9) 114.2(78.7,183.5) -5.417 <0.01
    下载: 导出CSV 
    | 显示表格

    三种灰度矩阵纹理分析技术对EVAR术后动脉瘤体积增大的诊断效能各有侧重(表 2),其中GLCM的AUC最大(0.892),其准确度与GLRLM相当(0.859),灵敏度与GLDM相当(0.862),但特异度略低于GLRLM。GLDM的AUC最小(0.800),准确度(0.788)和特异度(0.683)也最低。

    表  2  3种灰度矩阵纹理分析技术对腹主动脉瘤腔内修补术后动脉瘤体积变化的诊断效能
    纹理分析技术 曲线下面积 准确度 灵敏度 特异度
    GLCM 0.892 0.859 0.862 0.854
    GLDM 0.800 0.788 0.862 0.683
    GLRLM 0.888 0.859 0.828 0.902
    GLCM:灰度共生矩阵;GLRLM:灰度游程矩阵;GLDM:灰度差分矩阵
    下载: 导出CSV 
    | 显示表格

    图像纹理特征分析是对图像像素灰度值的局部特征分析法,包括统计分析、结构分析、模型分析和频谱分析4种,其中统计分析最常用[14],通过分析纹理的统计属性来描述纹理,提供纹理的平滑、稀疏等分布特性。本研究正是基于此种纹理分析方法,观察GLCM、GLDM和GLRLM对评估EVAR术后动脉瘤体积变化的预测价值,发现GLCM的诊断效能最优(AUC=0.892)。

    纹理分析的有效性已在诸多领域得到证实,如鉴别病变性质、治疗前评估、预测疗效等,研究多集中在肿瘤学方面,如通过乳腺X线纹理分析鉴别肿瘤良恶性[27],通过正电子发射断层显像/计算机体层成像(positron emission tomography/computed tomography, PET/CT)纹理分析将纹理参数与PET/CT最大标准摄取值结合,提高诊断肺癌的灵敏度[28],原发性结肠癌CT纹理特征与患者5年总体生存率相关[29],采用GLCM法预测宫颈癌疗效的准确度可达75%[30]

    CT纹理分析技术对血管疾病的辅助诊断亦具备可行性。研究显示,标准灰阶中位数技术较斑块纹理分析技术能更有效预测动脉内膜切除术后微栓塞的程度[31]。Kotze等[32]曾提出腹主动脉瘤CT信号异质性与瘤体扩张相关,联合PET/CT评估腹主动脉瘤的代谢活性,发现中等纹理的峰度与动脉瘤扩展显著相关,该研究是基于一阶统计的CT纹理参数,本研究则以二阶统计量为出发点,通过分析比较GLCM、GLRLM和GLDM的纹理特征,发现GLCM对EVAR术后动脉瘤体积增长的预测效能最佳,其次为GLRLM,最差为GLDM,此结果与García等[33]的结果一致,不同的是本研究是采用体积变化评价动脉瘤预后,García等则以动脉瘤轴位最大径作为预后分类指标。实际上,体积测量在反映动脉瘤真实增长方面优于直径测量[34],因为体积从三维角度评估瘤体形态变化,而直径仅反应瘤体某一截面的变化。

    EVAR术后随访中,放射科医师阅片时往往关注有无内漏及瘤体轴位最大径,易受主观影响,且评估不够全面。本研究中4例患者在第1次随访时出现内漏,但第2次随访时内漏消失,因此随访中发现内漏不一定需要立即干预。相较而言,纹理分析技术能更客观准确地描绘生物组织微观结构改变,获取肉眼无法辨识的细微信息,对预测动脉瘤体增大的最优灵敏度可达86.2%,特异度达85.4%。

    本研究存在部分局限性:(1)为回顾性研究,入组例数较少,术后随访时间较短,存在一定的选择偏倚;(2)由于软件技术限制,在分析动脉瘤纹理特征时仅提取了瘤体最大截面的二维纹理信息,未能从三维角度全面评估;(3)GLCM、GLRLM及GLDM纹理特征参数的整合过程由人工神经网络算法完成,由于该资料为内部封存,提取困难,致使结果部分的阐述尚欠明确。

    综上,CT纹理分析能有效预测EVAR术后动脉瘤的体积变化。目前该技术的研究尚处初级阶段,未来还需开展大样本、多中心、前瞻性研究进一步验证本文结论,推动纹理分析成为常规工具,为临床诊疗提供更精准的参考。

    作者贡献:罗详冲负责文献检索和论文撰写;王周清、李琼艳、毛贵兵、安乐、朱家宏、陶娥红、孙丽飞、王胜飞负责文献资料收集;李高峰负责写作指导和论文修订。
    利益冲突:所有作者均声明不存在利益冲突
  • 表  1   正在开展的替雷利珠单抗治疗晚期恶性肿瘤患者的临床试验研究

    NCT编号 试验方案 试验阶段
    NCT03967977,BGB-A317-310 替雷利珠单抗联合顺铂或卡铂和吉西他滨作为局部晚期或转移性尿路上皮癌一线治疗的临床试验研究 Ⅲ期
    NCT03412773,BGB-A317-301 比较替雷利珠单抗与索拉非尼作为不可切除肝细胞癌一线治疗的疗效和安全性的临床试验研究 Ⅲ期
    NCT03430843,BGB-A317-302 比较替雷利珠单抗与化疗作为二线治疗用于晚期不可切除或转移性食管鳞状细胞癌患者的疗效的临床试验研究 Ⅲ期
    NCT03783442,BGB-A317-306 替雷利珠单抗联合化疗作为一线治疗用于不可切除的局部晚期或转移性食管鳞状细胞癌患者的疗效和安全性的临床试验研究 Ⅲ期
    NCT03957590,BGB-A317-311 替雷利珠单抗与安慰剂联合同步放化疗治疗局限性食管癌患者的临床试验研究 Ⅲ期
    NCT03777657,BGB-A317-305 替雷利珠单抗联合铂类和氟尿嘧啶与安慰剂联合铂类和氟尿嘧啶作为一线治疗用于局部晚期不可切除或转移性胃或胃食管交界腺癌患者的疗效和安全性的临床试验研究 Ⅲ期
    NCT03924986,BGB-A317-309 比较替雷利珠单抗联合化疗与单纯化疗用于复发或转移性鼻咽癌一线治疗的疗效和安全性的临床试验研究 Ⅲ期
    NCT03594747,BGB-A317-307 比较替雷利珠单抗联合紫杉醇+卡铂或白蛋白紫杉醇+卡铂与单独紫杉醇+卡铂作为一线治疗用于晚期鳞状非小细胞肺癌的疗效和安全性的临床试验研究 Ⅲ期
    NCT03663205,BGB-A317-304 比较替雷利珠单抗联合化疗与单纯化疗作为一线治疗用于晚期非鳞状非小细胞肺癌的临床试验研究 Ⅲ期
    NCT03358875,BGB-A317-303 替雷利珠单抗与多西紫杉醇用于既往含铂方案进展的非小细胞肺癌患者的疗效和安全性的临床试验研究 Ⅲ期
    NCT04005716,BGB-A317-312 比较替雷利珠单抗单药与联合铂类+依托泊苷用于广泛期小细胞肺癌的临床试验研究 Ⅲ期
    NCT04004221,BGB-A317-204 替雷利珠单抗用于既往接受过治疗的PD-L1阳性的局部晚期或转移性尿路上皮癌的临床试验研究 Ⅱ期
    NCT03419897,BGB-A317-208 替雷利珠单抗在既往接受过治疗的不可切除肝细胞癌患者中的疗效、安全性和药代动力学临床试验研究 Ⅱ期
    NCT03736889,BGB-A317-209 替雷利珠单抗用于局部晚期不可切除或转移性高微卫星不稳定性或错配修复缺陷实体肿瘤患者的单药治疗临床试验研究 Ⅱ期
    PD-L1:程序性死亡[蛋白]配体-1
    下载: 导出CSV
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  • 期刊类型引用(1)

    1. 陈震,刘豆. 彩色多普勒超声在腹主动脉瘤诊断中的应用价值. 医药论坛杂志. 2022(17): 111-113 . 百度学术

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  • 收稿日期:  2021-10-12
  • 录用日期:  2021-11-22
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