PCSK9抑制剂治疗钙化性主动脉瓣狭窄的随机试验 (PICASO)
PCSK9抑制剂对轻/中度钙化性主动脉瓣狭窄进展的影响与安全性:一项随机对照临床试验
研究概览
详细说明
钙化性主动脉瓣狭窄(CAS)可导致严重不良心脏事件,但目前尚无有效药物可预防或延缓疾病进展。实际上,主动脉瓣置换术仍是唯一的治疗选择。研究表明,CAS与脂蛋白(a)、低密度脂蛋白胆固醇(LDL-C)和前蛋白转化酶枯草溶菌素9(PCSK9)相关。多项观察性研究提示,使用他汀类药物降低LDL-C水平与CAS发病率降低相关,但尚无随机对照试验(RCTs)证明他汀类药物对CAS进展有任何益处。这可能与他汀治疗对LDL-C的降低作用有限有关。PCSK9抑制剂已成为新型降脂药物。在他汀治疗基础上,PCSK9抑制剂可进一步分别降低LDL-C和脂蛋白(a)水平50%至60%和20%至30%。部分研究报道,血浆PCSK9水平升高与CAS相关,而PCSK9 R46L功能缺失突变与较低CAS发生率相关;重要的是,一些观察性研究发现PCSK9抑制剂可降低CAS发病率。本研究旨在探讨PCSK9抑制剂对预防或延缓CAS进展的作用。计划纳入160例目前无需瓣膜置换治疗的轻度或中度CAS患者,按1:1比例(按中心分层)随机分为PCSK9抑制剂治疗组(试验组)和非PCSK9抑制剂组(对照组)。所有患者随机化后将至少随访2年。入组后,将在首月及此后每三个月进行电话随访,收集用药情况、生活质量评分和临床终点事件数据。多普勒超声心动图数据将在基线、1年访视、2年访视和研究退出前采集。血液样本及主动脉计算机断层扫描血管造影(CTA)、18F-NaF正电子发射断层扫描/计算机断层扫描(PET/CT)数据将在基线、2年访视和研究退出前采集。主要终点为24个月随访期间峰值主动脉射流速度的年化平均变化。次要终点包括:超声心动图测得的主动脉瓣口面积年化平均变化、主动脉CTA测得的主动脉瓣钙化评分年化平均变化、PET/CT测得的18F-NaF摄取活性年化平均变化、心脏瓣膜手术发生率及生活质量评分变化。安全性终点为全因死亡率、非致死性心肌梗死和非致死性卒中的复合终点。本试验结果将为CAS患者的治疗提供新见解。
血液样本应检测血清学指标,包括血常规、C反应蛋白(CRP)、生化全项、凝血功能、脑钠肽(BNP)、心肌损伤标志物、糖化血红蛋白、红细胞沉降率、细胞因子(12项)。
研究类型
注册 (估计的)
阶段
- 第三阶段
联系人和位置
学习联系方式
- 姓名:Zhijian Wang
- 电话号码:+8615711057972
- 邮箱:zjwang1975@hotmail.com
研究联系人备份
- 姓名:Xiaoteng Ma
- 电话号码:+8618810616459
- 邮箱:maxiaotengai@163.com
学习地点
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Beijing Municipality
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Beijing、Beijing Municipality、中国、100029
- Beijing AnZhen Hospital, Capital Medical University
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首席研究员:
- Zhijian Wang
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接触:
- Xiaoteng Ma
- 电话号码:+8618810616459
- 邮箱:maxiaotengai@163.com
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副研究员:
- Xiaoteng Ma
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参与标准
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
描述
纳入标准:
- 年龄18-85岁,临床诊断为轻度至中度钙化性主动脉瓣狭窄(超声心动图显示主动脉射流峰值速度≥2m/s且<4m/s,或平均跨瓣压差<40mmHg),目前无需进行瓣膜置换治疗的患者;
- 低密度脂蛋白胆固醇(LDL-C)水平≥2.6 mmol/L但<4.9 mmol/L,或脂蛋白(a)(Lp(a))水平≥30 mg/dL的患者;
- 能够理解研究目的,自愿参与并签署书面知情同意书,且愿意遵守临床随访要求的患者。
排除标准:
- 既往接受过PCSK9抑制剂治疗;
- 根据医生判断必须使用PCSK9抑制剂治疗的患者;
- 无法维持使用PCSK9抑制剂24个月的患者;
- 对PCSK9抑制剂存在禁忌症或过敏反应;
- 疑似或确诊为家族性高胆固醇血症;
- 基线筛查时空腹甘油三酯(TG)>400 mg/dL(4.5 mmol/L);
- 甲状腺功能减退;
- 活动性或慢性肝病;
- 严重肾功能不全(估算肾小球滤过率<30 mL/min/1.73 m²);
- 颅内出血病史;
- 酒精或药物滥用史;
- 已知活动性感染,或严重血液、代谢、内分泌功能障碍;
- 过去3个月内接受过全身性皮质类固醇或环孢素治疗;
- 活动性恶性肿瘤;
- 任何预期寿命少于12个月的危及生命的疾病;
- 风湿性主动脉瓣狭窄;
- 重度二尖瓣狭窄(二尖瓣面积<1 cm²);
- 重度二尖瓣或主动脉瓣反流;
- 计划进行心脏瓣膜手术;
- 左心室射血分数<30%或严重心力衰竭(纽约心脏协会心功能分级III级或IV级);
- 植入永久性起搏器或心脏复律除颤器;
- 药物难治性心律失常;
- 妊娠、哺乳期或计划妊娠。
学习计划
研究是如何设计的?
设计细节
- 主要用途:治疗
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:单身的
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的:PCSK9抑制剂治疗
实验组患者接受PCSK9抑制剂治疗(每两周皮下注射150mg Tafolecimab)以及心血管一级或二级预防的指南导向管理。
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实验组患者接受PCSK9抑制剂(每两周皮下注射泰博利单抗)治疗,并在心血管一级或二级预防中采用指南指导的管理。
其他名称:
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其他:不使用PCSK9抑制剂的治疗
对照组患者仅接受指南指导下的心血管一级或二级预防管理,未接受PCSK9抑制剂治疗。
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对照组患者仅接受心血管一级或二级预防指南指导的管理,不进行PCSK9抑制剂治疗。
其他名称:
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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主动脉峰值射流速的年度化平均变化
大体时间:最长24个月
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峰值主动脉射流速度通过超声心动图测量。
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最长24个月
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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生活质量分数的变化
大体时间:最长 24 个月
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使用 EQ-5D-3L 量表评估生活质量评分的变化
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最长 24 个月
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主动脉瓣口面积的年化平均变化
大体时间:长达24个月
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主动脉瓣面积通过超声心动图测量。
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长达24个月
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主动脉瓣钙化评分的年化平均变化
大体时间:长达24个月
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主动脉瓣钙化评分通过主动脉计算机断层扫描血管造影测量。
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长达24个月
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心脏瓣膜手术
大体时间:最多24个月
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经导管主动脉瓣植入术或外科主动脉瓣置换术
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最多24个月
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其他结果措施
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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安全性终点
大体时间:最长24个月
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安全性终点是全因死亡率、非致命性心肌梗死和非致命性卒中的复合终点。
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最长24个月
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合作者和调查者
合作者
调查人员
- 学习椅:Zhijian Wang、Beijing Anzhen Hospital
- 首席研究员:Xiaoteng Ma、Beijing Anzhen Hospital
出版物和有用的链接
一般刊物
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研究记录日期
研究主要日期
学习开始 (估计的)
初级完成 (估计的)
研究完成 (估计的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.