外周动脉疾病中的粒细胞-巨噬细胞刺激因子 (GM-CSF) (GPAD-3)
外周动脉疾病中的粒细胞-巨噬细胞刺激因子 (GM-CSF):GPAD-3 研究
研究概览
详细说明
下肢动脉粥样硬化性外周动脉疾病 (PAD) 折磨着多达 8% 的美国人口,缺乏足够的可持续疗法必然导致严重的发病率和死亡率增加。 实验和当前临床数据均表明 GM-CSF 具有动员多种祖细胞 (PC) 的能力,包括似乎改善缺血的内皮 PC。
这项研究建立在先前研究的结果之上,该研究表明用 GM-CSF 治疗后跛行症状有所改善。 本研究旨在回答在 3 个月时重复施用 GM-CSF 是否会进一步改善症状。 研究人员将在一项双盲安慰剂对照随机研究中调查 GM-CSF 注射 3 周、每周 3 次是否会改善间歇性跛行患者的缺血指标。
这项研究将招募 176 名患有动脉粥样硬化 PAD 和跛行的参与者。 在筛选纳入和排除标准后,将对符合条件的受试者进行皮下注射培训,并指导他们走路,直到他们出现跛行或症状受限,每天至少三次,持续 4 周。 在 4 周结束时,受试者将接受基线测试,并随机接受 500 μg/天的 GM-CSF,每周三次,持续 3 周(A 组)或安慰剂(B 组)。 3个月后,将进行后续终点测试。 然后,A 组受试者将接受第二次 500 μg/天皮下 GM-CSF 给药,每周三次,持续 3 周,然后再随访 3 个月进行终点测量,而 B 组受试者将接受匹配的安慰剂。 主要结果是 6 个月后,与安慰剂组相比,活性治疗组的步行表现发生了变化。 次要结果包括 6 个月时步行峰值时间的变化、循环祖细胞水平的变化、踝臂指数 (ABI)、步行障碍问卷 (WIQ) 分数和 36 项短期健康调查 (SF-36) 分数. 每位参与者在参加研究后一年、两年和三年将通过电话进行长期跟进,以管理问卷和收集不良事件数据。
为应对 2020 年 4 月 3 日的 2019 年冠状病毒病 (COVID-19) 危机,机构审查委员会 (IRB) 批准了对本研究的临时修改,以推迟不涉及活性药物/安慰剂使用的研究访问。
研究类型
注册 (实际的)
阶段
- 阶段2
联系人和位置
学习地点
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Georgia
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Atlanta、Georgia、美国、30322
- Emory University Hospital
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
描述
纳入标准:
- 女性受试者必须 (a) 绝经后,(b) 手术绝育或 (c) 使用充分的避孕措施,并且在研究药物给药前 3 天内妊娠试验呈阴性,并且不应进行母乳喂养。
- 记录的症状性 PAD
- 间歇性跛行或行走障碍(Rutherford II 级)的临床稳定(入组前至少 2 个月)病史,筛选前 2 个月内症状严重程度没有变化。
- 入组前 3 个月接受他汀类药物治疗,除非他汀类药物不耐受。
- 如果加德纳协议上的 PWT 超过 12 分钟,则在标准化加德纳跑步机协议或修改后的加德纳协议上,峰值步行时间 (PWT) 在 1 到 12 分钟之间,或者在修改后的布鲁斯协议上少于 12 分钟。
- 筛选时休息 10 分钟后,有症状的肢体的多普勒衍生踝臂指数 (ABI) < 0.90。 对于 ABI >1.3(不可压缩动脉)的受试者,必须获得 < 0.70 的趾臂指数 (TBI) 才能获得受试者资格,或者如果 ABI > 0.9 至 1.0,并且测量的 ABI 减少 20%在跑步机测试后 1 分钟内。
- 在入组前至少 2 个月接受适当且稳定的动脉粥样硬化药物治疗。
- 能够给予知情同意。
- 在入组前 12 个月内进行散瞳检查排除增殖性视网膜病变的糖尿病患者。
排除标准:
- 最近或当前的活动性感染(用抗生素治疗)
- 近期(随机分组前 6 个月)或目前正在接受治疗的活动性癌症
- 最近(随机分组前 3 个月)他汀类药物或西洛他唑治疗的变化
- 慢性(Rutherford Class >II)严重肢体缺血或表现为静息痛、溃疡或坏疽的急性缺血
- 最近(随机分组前 3 个月)进行过下肢血管手术、血管成形术或腰交感神经切除术
- 计划在未来或研究期间参与结构化运动治疗方案
- 既往髓系恶性肿瘤
- 最近(随机化前 3 个月)不稳定型心绞痛、心肌梗塞、短暂性脑缺血发作 (TIA)、中风或血运重建
- 严重心力衰竭(III 级或 IV 级)或心肌疾病
- 因关节炎或呼吸困难等间歇性跛行以外的症状限制运动
- 膝下或膝上截肢;坐轮椅
- 使用拐杖以外的助行器
- 由于 PAD 以外的原因导致的行走障碍,例如 帕金森病
- 不受控制的糖尿病(定义为 HbA1c > 10.0)
- 慢性肾病(肌酐 >2.5 mg/dl)或肝病(天冬氨酸氨基转移酶 (AST) 和丙氨酸氨基转移酶 (ALT) 升高 > 3 倍)
- 白细胞计数 < 3k/cmm
- 血红蛋白 (HGB) < 10g/dL
- 收缩压 >180 和/或舒张压 >100
- 服用免疫抑制药物
- 与新血管反应相关的眼科疾病
- 酒精或药物滥用,或 PI 认为会干扰患者参与研究能力的任何其他疾病过程
- 无法参加学习访问
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:双倍的
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的:Granulocyte-macrophage Colony Stimulating Factor (GM-CSF)
Participants receiving 500µg of granulocyte-macrophage colony stimulating factor (GM-CSF), administered subcutaneously.
Prior to randomization to a study arm, eligible participants are trained to perform subcutaneous injections and instructed to walk at least three times a day until they develop claudication or symptomatic limitation for 4 weeks.
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参与者将每周(周一、周三、周五)皮下注射 500 μg/天的 GM-CSF,持续三周。
三个月后,参与者将接受第二次皮下 GM-CSF 给药,剂量为 500 μg/天,每周 3 次,持续 3 周,然后再随访 3 个月。
其他名称:
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安慰剂比较:Placebo
Participants receiving 500µg of a placebo, administered subcutaneously.
Prior to randomization to a study arm, eligible participants are trained to perform subcutaneous injections and instructed to walk at least three times a day until they develop claudication or symptomatic limitation for 4 weeks.
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参与者将每周(周一、周三、周五)皮下注射 500 微克/天的安慰剂,持续三周。
三个月后,参与者将接受第二次皮下注射安慰剂,剂量为 500 μg/天,每周 3 次,持续 3 周,然后再随访 3 个月。
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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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Change in 6-minute walk distance
大体时间:Baseline, Month 6
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Participants walk up and down a 100-foot hallway for 6 minutes to cover the maximum distance possible.
The distance, measured in meters, completed after 6 minutes will be recorded.
The primary outcome examines walking distance following two consecutive 3-monthly administrations of the study treatments.
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Baseline, Month 6
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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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跛行发作时间 (COT) 的变化
大体时间:基线、第 3 个月、第 6 个月、第 9 个月
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跑步机运动期间的跛行开始时间 (COT) 将与峰值步行时间 (PWT) 一起记录。
跛行开始时间 (COT) 是参与者典型跛行开始前的运动持续时间。
这与峰值步行时间 (PWT) 不同,后者是由于严重跛行而终止运动的时间。
分级跑步机运动测试将使用 Gardner 协议进行,其中跑步机速度保持在 2 mph,坡度从 0 开始,每两分钟倾斜 2%。
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基线、第 3 个月、第 6 个月、第 9 个月
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踝臂指数 (ABI) 的变化
大体时间:基线、第 3 个月、第 6 个月、第 9 个月
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为获得踝臂指数 (ABI),将双侧上肢和下肢血压袖带充气至高于收缩压约 30 毫米汞柱 (mmHg)。
多普勒血流信号用于检测重新出现的灌注,同时降低袖带压力。
结果表示为节段/手臂压力比(ABI 指数)。
两个手臂的最高压力将用于计算 ABI。
平均比率约为 1.0+/-0.10;
0.90 或更低的指数被认为是异常的。
对于患有钙化、不可压缩动脉(某些糖尿病患者)且 ABI 测量值不可靠的患者,将执行脚趾/手臂压力指数比值,并在大脚趾或第二脚趾上使用 2.5 厘米的袖带。
小于 0.65 的脚趾/手臂指数被认为是异常的。
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基线、第 3 个月、第 6 个月、第 9 个月
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足部经皮氧分压 (TcPO2) 的变化
大体时间:基线、第 3 个月、第 6 个月、第 9 个月
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足部经皮氧分压 (TcPO2) 是一种测量外周动脉疾病的无创方法。
TcPO2 是在患者站立三分钟后在运动前用监测器获得的,并在整个运动过程中进行监测。
记录初始跛行距离、绝对跛行距离和运动恢复后的值。
常用的切点是 60 毫米汞柱 (mmHg),低于此值表明存在外周动脉疾病。
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基线、第 3 个月、第 6 个月、第 9 个月
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Change in Peak Walking Time (PWT)
大体时间:Baseline, Month 6
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Graded treadmill exercise testing is performed using the Gardner protocol where the treadmill speed is kept at 2 mph and the grade starts at 0 and inclines by 2% every two minutes.
The peak walking time (PWT) is the time (measured in seconds) until exercise is terminated because of severe claudication (pain in legs).
Exercise testing is performed twice and longest time is used as the PWT for that study visit.
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Baseline, Month 6
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Change in Peak Walking Time (PWT) From First Through Second Treatment
大体时间:Month 3, Month 6
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To investigate whether there is further improvement with GM-CSF administered twice compared to a single administration, PWT at Month 6 compared to Month 3 is examined.
Graded treadmill exercise testing is performed using the Gardner protocol where the treadmill speed is kept at 2 mph and the grade starts at 0 and inclines by 2% every two minutes.
The peak walking time (PWT) is the time (in seconds) until exercise is terminated because of severe claudication (pain in legs).
Exercise testing is performed twice and longest time is used as the PWT for that study visit.
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Month 3, Month 6
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Change in Peak Walking Time (PWT) After Single Treatment
大体时间:Baseline, Month 3
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To investigate whether there is improvement following a single treatment of GM-CSF, PWT at Month 3 compared to Baseline is examined.
Graded treadmill exercise testing is performed using the Gardner protocol where the treadmill speed is kept at 2 mph and the grade starts at 0 and inclines by 2% every two minutes.
The peak walking time (PWT) is the time (in seconds) until exercise is terminated because of severe claudication (pain in legs).
Exercise testing is performed twice and longest time is used as the PWT for that study visit.
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Baseline, Month 3
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Change in 6-minute Walk Distance From First Through Second Treatment
大体时间:Month 3, Month 6
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To investigate whether there is further improvement with GM-CSF administered twice compared to a single administration, the examine walking distance at Month 6 compared to Month 3 is examined.
Participants walk up and down a 100-foot hallway for 6 minutes to cover the maximum distance possible.
The distance, measured in meters, completed after 6 minutes is recorded.
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Month 3, Month 6
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Change in 6-minute Walk Distance After Single Treatment
大体时间:Baseline, Month 3
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To investigate whether there is improvement following a single treatment of GM-CSF, the walking distance at Month 3 compared to Baseline is examined.
Participants walk up and down a 100-foot hallway for 6 minutes to cover the maximum distance possible.
The distance, measured in meters, completed after 6 minutes is recorded.
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Baseline, Month 3
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Change in Walking Impairment Questionnaire (WIQ): Walking Distance Score
大体时间:Baseline, Month 3, Month 6, Month 9, Year 1
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The Walking Impairment Questionnaire (WIQ) domain of walking distance asks respondents to rate how difficult it is to walk around home, as well as distances of 50, 150, 300, 600, 900 and 1500 feet.
Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0).
Total raw scores range from 0 to 28 with higher scores indicating increased ability to walk further distances.
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Baseline, Month 3, Month 6, Month 9, Year 1
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Change in Walking Impairment Questionnaire (WIQ): Walking Speed Score
大体时间:Baseline, Month 3, Month 6, Month 9, Year 1
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The Walking Impairment Questionnaire (WIQ) domain of walking speed asks respondents to rate how difficult it is to walk the distance of one block slowly, at an average speed, quickly, and running/jogging.
Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0).
Total raw scores range from 0 to 16 with higher scores indicating increased ability to walk fast.
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Baseline, Month 3, Month 6, Month 9, Year 1
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Change in Walking Impairment Questionnaire (WIQ): Stair Climbing Score
大体时间:Baseline, Month 3, Month 6, Month 9, Year 1
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The Walking Impairment Questionnaire (WIQ) domain of stair climbing asks respondents to rate how difficult it is to climb 1, 2, and 3 flights of stairs.
Possible responses are: not hard (4), slightly difficult (3), somewhat difficult (2), very difficult (1), and unable to do (0).
Total raw scores range from 0 to 12 with higher scores indicating better ability to climb stairs.
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Baseline, Month 3, Month 6, Month 9, Year 1
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Change in 36-item Short-Form Health Survey (SF-36) Score
大体时间:Baseline, Month 3, Month 6, Month 9, Year 1
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36-item Short-Form Health Survey (SF-36) consists of eight scaled scores for the domains of: vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, social role functioning, and mental health.
The domains can be summarized to represent two distinct concepts for a Physical Component Summary (PCS) and a Mental Component Summary (MCS).
Study participants respond to questions relating to their health and activity level by selecting from a variety of Likert scale and yes/no response options.
Each scale is directly transformed into a 0-100 scale and lower scores indicate more disability (a score of 0 equates to maximum disability while a score of 100 indicates no disability).
This study examines the Physical Component Summary (PCS) score as well as all domains.
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Baseline, Month 3, Month 6, Month 9, Year 1
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Number of Circulating Mononuclear Cells Expressing CD34
大体时间:Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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The number of circulating mononuclear cells expressing the PC specific epitopes CD34 is counted using fluorescent activated sorting (FACS).
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Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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Number of Circulating Mononuclear Cells Expressing CD133
大体时间:Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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The number of circulating mononuclear cells expressing the PC specific epitopes CD133 is counted using fluorescent activated sorting (FACS).
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Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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Number of Circulating Mononuclear Cells Expressing VEGF2R (KDR)
大体时间:Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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The number of circulating mononuclear cells expressing the PC specific epitopes VEGF2R (KDR) is counted using fluorescent activated sorting (FACS).
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Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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Number of Circulating Mononuclear Cells Expressing CXCR4
大体时间:Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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The number of circulating mononuclear cells expressing the PC specific epitopes CXCR4 is counted using fluorescent activated sorting (FACS).
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Baseline, Week 3, Month 3, Week 15, Month 6, Month 9
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合作者和调查者
调查人员
- 首席研究员:Arshed Quyyumi, MD、Emory University
出版物和有用的链接
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
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
与本研究相关的术语
其他相关的 MeSH 术语
其他研究编号
- IRB00087198
- 1R61HL138657 (美国 NIH 拨款/合同)
- 2025P011130 (其他标识符:Emory IRB)
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)?
药物和器械信息、研究文件
研究美国 FDA 监管的药品
研究美国 FDA 监管的设备产品
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.
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