评估 PXS-5505 在原发性、真性红细胞增多症后或原发性血小板增多症后骨髓纤维化患者中的安全性、药代动力学和药效学剂量递增和扩展研究的研究
2026年7月9日 更新者:Syntara
一项评估 PXS-5505 在原发性真性红细胞增多症或原发性血小板增多症后骨髓纤维化患者中的安全性、药代动力学和药效学剂量递增和扩展研究的 1/2a 期研究
本研究将是一项开放标签的 1/2a 期研究,旨在评估 PXS-5505 在原发性真性红细胞增多症 (PV) 或原发性血小板增多症 (ET) 骨髓纤维化患者中的安全性和耐受性。
研究概览
详细说明
该研究包括两个阶段:剂量递增阶段和队列扩展阶段。 剂量递增阶段将遵循 3+3 设计,起始剂量为 100 mg,每天两次,治疗持续时间为 4 周。 患者将能够参与一个以上的剂量水平。
在队列扩展阶段,最多 24 名患者将根据剂量递增阶段的安全性、药代动力学和药效学结果确定适当的剂量,治疗时间长达 6 个月。 来自剂量递增阶段的患者将能够参与队列扩展阶段。
剂量递增和剂量扩展队列之间没有清除期。
研究类型
介入性
注册 (实际的)
43
阶段
- 阶段2
- 阶段1
联系人和位置
本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。
学习地点
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Kaohsiung City、台湾、807
- Kaohsiung Medical University Chung-Ho Memorial Hospital
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Taichung、台湾、40447
- China Medical University Hospital - Internal Medicine - Taichung
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Tainan、台湾、70403
- National Cheng Kung University Hospital
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Taipei、台湾、100
- National Taiwan University Hospital - Hematology And Oncology
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Chiayi
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Chiayi City、Chiayi、台湾、613
- Chang Gung Medical Foundation - ChiaYi Chang Gung Memorial Hospital - Hematology and Oncology
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New South Wales
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Liverpool、New South Wales、澳大利亚、2170
- Liverpool Hospital
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South Australia
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Adelaide、South Australia、澳大利亚、5037
- Ashford Cancer Centre Research
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Victoria
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Fitzroy、Victoria、澳大利亚、3065
- St Vincent's Hospital Melbourne
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Western Australia
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Perth、Western Australia、澳大利亚、6009
- One Clinical Research
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West Perth、Western Australia、澳大利亚、6005
- The Perth Blood Institute
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Alabama
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Birmingham、Alabama、美国、98374
- Comprehensive Cancer Center (UAB CCC)
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North Carolina
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Winston-Salem、North Carolina、美国、27103
- Novant Health Cancer Institute
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Texas
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Houston、Texas、美国、77030
- The University of Texas MD Anderson Cancer Center
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Gyeonggi-do、韩国、10408
- National Cancer Center (Seoul Metro; northern)
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Gyeonggi-do、韩国、13620
- Seoul National University Hospital - Bundang
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Seoul、韩国、03080
- Seoul National University Hospital
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Seoul、韩国、06351
- Samsung Medical Center
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Seoul、韩国、06591
- The Catholic University of Korea, Seoul St. Mary's Hospital
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Seoul、韩国、05505
- Asan Medical Centre
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Seoul、韩国、03711
- Severance Hospital, Yonsei University Health System- Haemat
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Busan Gwang'yeogsi [Pusan-Kwan
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Busan、Busan Gwang'yeogsi [Pusan-Kwan、韩国、47392
- Inje University Busan Paik Hospital - Internal Medicine
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Daegu Gwang'yeogsi [Taegu-Kwangyokshi]
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Daegu、Daegu Gwang'yeogsi [Taegu-Kwangyokshi]、韩国、42601
- Keimyung University Dongsan Hospital
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Incheon Gwang'yeogsi [Inch'n-K
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Incheon、Incheon Gwang'yeogsi [Inch'n-K、韩国、21565
- Gachon University Gil Hospital
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参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 及以上 (成人、年长者)
接受健康志愿者
不
描述
纳入标准:
- 根据世界卫生组织 2016 年诊断标准(必须至少包括 2 级骨髓纤维化),经病理学确诊为原发性血小板增多症/原发性血小板增多症/真性红细胞增多症骨髓纤维化
- 不适合干细胞移植的患者
由于不合格而目前未接受 ruxolitinib 或 fedratinib(如有)治疗的患者,或由于以下任何标准而在首次给药前至少 2 周停止接受过治疗的患者:
- 不合格:血小板 <50 x 10^9/L
- 不耐受:在接受 ruxolitinib 或 fedratinib 治疗至少 28 天后,出现至少 2 个单位/月的红细胞输注依赖,持续 2 个月或≥3 级血小板减少、贫血、血肿和/或出血不良事件
- 难治性:使用 ruxolitinib 或 fedratinib 治疗至少 3 个月后,MRI 或 CT 显示脾脏体积减少 < 10%,或触诊脾脏体积从基线减少 < 30%
- 复发:在对 ruxolitinib 或 fedratinib 有初步反应并经过至少 3 个月的治疗后,通过 MRI 或 CT 再生到脾体积减少 < 10%,或通过触诊脾体积从基线减少 < 30%
- 根据国际工作组预后评分系统(DIPSS),患有中间 -2 或高危疾病;
- 根据 MFSAF v4.0 有症状性疾病;
- 预期寿命为六个月或更长;
必须具有足够的器官功能,如下所示(在过去 2 周内):
- 谷丙转氨酶和/或天冬氨酸转氨酶≤ 2.5 倍正常值上限 (ULN),或 ≤ 4 倍正常值上限(如果根据治疗医师的判断,认为是由于与 MF 相关的髓外造血 [EMH]);
- 直接胆红素 ≤ 1.5 x ULN;或 ≤ 2 x ULN(如果根据治疗医师的判断,认为是由于与 MF 相关的 EMH);
- 估计肾小球滤过率 (eGFR) > 50 mL/min
- Eastern Cooperative Oncology Group 表现状态 ≤ 2;
- 男性必须同意使用一种医学上批准的避孕措施,并让他们的伴侣同意在研究期间和最后一次服用研究药物后的 90 天内使用额外的屏障避孕方法;有生育能力的妇女必须使用有效的避孕措施
- 仅限队列扩展阶段:必须在第 1 天治疗前 3 个月内进行骨髓活检以确定基线纤维化评分,或者如果受试者参加第 1 天的剂量递增阶段,则必须在重新开始 PXS-5505 治疗后 5 个月内进行试用
排除标准:
- 外周血原始细胞大于 (>) 10%(最近两周内测定);
- 首次接受研究治疗药物前 3 个月内曾接受过脾切除术,或计划接受脾切除术或脾脏照射
- 任何会阻止(由主治医师判断)受试者签署知情同意书的严重医疗状况或精神疾病或任何状况,包括实验室异常的存在,如果他/她要使受试者处于不可接受的风险中参与研究或混淆解释研究数据的能力
- 人类免疫缺陷病毒、活动性丙型肝炎或活动性乙型肝炎的已知病史
- 入组前三年内有任何形式的癌症病史或存在,但切除的皮肤基底细胞癌或鳞状细胞癌,或宫颈原位癌或已完全切除或切除的原位乳腺癌除外无局部复发或转移证据
- 在研究第 1 天前两周内或在另一项临床研究中研究药物半衰期的五倍内(如果已知)参加研究性药物或器械试验
- 在第 1 天研究前两周内使用任何细胞毒性化疗药物,包括羟基脲、皮质类固醇(允许泼尼松 ≤ 10 mg/天或皮质类固醇等效物)或免疫调节剂(例如沙利度胺),并在四个星期内使用干扰素
- 有症状的充血性心力衰竭(纽约心脏协会分类 II 级)、不稳定型心绞痛或需要药物治疗的不稳定型心律失常
- 怀孕
- 入组前两周内的手术史或研究期间或研究后两周内的预期手术史
- 动脉瘤病史
- 任何其他可能会降低获得协议所需数据的机会或可能会损害给予真正知情同意的能力的条件。
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
- 主要用途:治疗
- 分配:非随机化
- 介入模型:顺序分配
- 屏蔽:无(打开标签)
武器和干预
参与者组/臂 |
干预/治疗 |
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实验性的:PXS-5505,剂量水平 1,递增阶段(队列 A)
患者将接受 PXS-5505 剂量水平 1,每天两次,持续 4 周。
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PXS-5505 是一种硬胶囊(0 号),附加赋形剂甘露醇和硬脂酸镁。
其他名称:
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实验性的:PXS-5505,剂量水平 2,递增阶段(队列 B)
患者将接受 PXS-5505 剂量水平 2,每天两次,持续 4 周。
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PXS-5505 是一种硬胶囊(0 号),附加赋形剂甘露醇和硬脂酸镁。
其他名称:
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实验性的:PXS-5505,剂量水平 3,递增阶段(队列 C)
患者将接受 PXS-5505 剂量水平 3,每天两次,持续 4 周。
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PXS-5505 是一种硬胶囊(0 号),附加赋形剂甘露醇和硬脂酸镁。
其他名称:
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实验性的:PXS-5505,扩展阶段
所有患者将以选定的每日两次剂量接受 PXS-5505,持续 24 周,或直至疾病进展、不可接受的毒性、剂量限制性毒性或撤回同意。
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PXS-5505 是一种硬胶囊(0 号),附加赋形剂甘露醇和硬脂酸镁。
其他名称:
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实验性的:PXS-5505,附加阶段
已经接受稳定剂量的鲁索替尼至少 12 周的患者,将在其鲁索替尼剂量的基础上接受 PXS-5505(队列扩展阶段使用的剂量)长达 52 周或直到疾病进展、不可接受的毒性、剂量-限制毒性,或撤回同意。
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PXS-5505 是一种硬胶囊(0 号),附加赋形剂甘露醇和硬脂酸镁。
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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Number of Subjects With Serious and Non-serious Adverse Events
大体时间:Day 0 to follow-up visit (28 -1/+7days post-Tx end) after up to 4wks Tx [escalation phase]; Day 0 to follow-up visit (28±3days post-Tx end) after up to 24wks Tx [expansion]); Day 0 to follow-up visit (28± 3days post-Tx end) after up to 52wks Tx [add-on].
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Safety and tolerability of PXS-5505 in patients with myelofibrosis will be assessed.
More details on the types of AEs can be found in the safety results section.
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Day 0 to follow-up visit (28 -1/+7days post-Tx end) after up to 4wks Tx [escalation phase]; Day 0 to follow-up visit (28±3days post-Tx end) after up to 24wks Tx [expansion]); Day 0 to follow-up visit (28± 3days post-Tx end) after up to 52wks Tx [add-on].
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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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Maximum Plasma Concentration (Cmax)
大体时间:Day 0, week 1 and week 4 (dose escalation), and Day 0, week 4, 12 and 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Pharmacokinetic parameters of PXS-5505 in patients with myelofibrosis.
Cmax was taken to be the concentration at 1 hour post-dose.
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Day 0, week 1 and week 4 (dose escalation), and Day 0, week 4, 12 and 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Minimum Plasma Concentration (Cmin)
大体时间:Day 0, week 1 and week 4 (dose escalation), and Day 0, week 4, 12 and 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Pharmacokinetic parameters of PXS-5505 in patients with myelofibrosis will be assessed.
Cmin was the concentration pre-dose at each visit.
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Day 0, week 1 and week 4 (dose escalation), and Day 0, week 4, 12 and 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Lysyl Oxidase and Lysyl Oxidase-like 2 Inhibition in Plasma
大体时间:Day 0, week 1 and week 4 dose escalation, and at week 0, 4, 12, 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Pharmacodynamic parameters of PXS-5505 in patients with myelofibrosis.
LOX and LOXL2 inhibition expressed as a percentage of the pre-dose activity on Day 0.
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Day 0, week 1 and week 4 dose escalation, and at week 0, 4, 12, 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Change in Bone Marrow (BM) Fibrosis - Reticulin
大体时间:Day 0, Week 12 and Week 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Change in bone marrow reticulin fibrosis assessed according to European Consensus on grading of bone marrow fibrosis, centrally assessed.
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Day 0, Week 12 and Week 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Change in Bone Marrow (BM) Fibrosis - Collagen
大体时间:Day 0, Week 12 and Week 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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Change in bone marrow collagen fibrosis, assessed according to European Consensus on grading of bone marrow fibrosis via central review
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Day 0, Week 12 and Week 24 (cohort expansion and add-on phase), and week 52 during add-on phase only
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IWG-MRT Response Rate, Investigator Assessment
大体时间:At week 12 and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Response rates as assessed by the investigator based on International Working Group (IWG)-Myeloproliferative Neoplasms Research and Treatment criteria in patients with myelofibrosis administered PXS-5505
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At week 12 and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in Spleen Volume
大体时间:Day 0, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in spleen volume, as measured by computed tomography (CT) or magnetic resonance imaging (MRI) scan, in patients with myelofibrosis administered PXS-5505
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Day 0, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in Spleen Volume - Achievement of SVR25
大体时间:Week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Achievement of a reduction of 25% from baseline in the spleen volume in patients with myelofibrosis and enlarged spleen administered PXS-5505
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Week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in Spleen Volume - Achievement of SVR35
大体时间:Week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Achievement of a reduction of 35% from baseline in the spleen volume in patients with myelofibrosis and an enlarged spleen administered PXS-5505
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Week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in Myelofibrosis Related Symptoms - Achievement of TSS50
大体时间:Screening, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Achievement of a reduction of 50% from baseline in the Total Symptom Score (TSS) as measured by the Myelofibrosis-Symptom Assessment Form (MFSAF) v4.0, 7 day recall version, in patients with myelofibrosis administered PXS-5505.
The MFSAF v4.0 assesses 7 core symptoms of myelofibrosis: fatigue, night sweats, pruritus, abdominal discomfort, pain under the left ribs, early satiety, and bone pain.
Each symptom is rated on an 11-point scale from 0 (absent) to 10 (worst imaginable).
The Total Symptom Score is calculated by adding the scores from each of the 7 individual symptoms.
Therefore the range of possible scores is from 0 to 70, with a higher score indicating worse symptoms.
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Screening, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Changes in Myelofibrosis Related Symptoms, Absolute Change in TSS
大体时间:Screening, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Absolute changes from baseline in Total Symptom Score (TSS) as measured by the Myelofibrosis-Symptom Assessment Form (MFSAF) v4.0, 7 day recall version, in patients with myelofibrosis administered PXS-5505.
The MFSAF v4.0 assesses 7 core symptoms of myelofibrosis: fatigue, night sweats, pruritus, abdominal discomfort, pain under the left ribs, early satiety, and bone pain.
Each symptom is rated on an 11-point scale from 0 (absent) to 10 (worst imaginable).
The Total Symptom Score is calculated by adding the scores from each of the 7 individual symptoms.
Therefore the range of possible scores is from 0 to 70, with a higher score indicating worse symptoms.
A positive absolute change is indicative of worsened symptoms compared to baseline.
A negative absolute change is indicative of improved symptoms compared to baseline.
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Screening, week 12, and week 24 (cohort expansion and add-on phase), weeks 38 and 52 during add-on phase only
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Hematological Changes - % of Patients With Anemia Response, Minor Anemia Response, 50% Reduction in Transfusion Burden
大体时间:Any time from week 12 to week 24 (expansion phase) or to week 52 (add-on phase)
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Patients with hemoglobin <100g/L at baseline who achieve an anemia response based on IWG-MRT criteria and who achieve a minor anemia response consistent with 2024 IWG-ELN criteria.
Also, patients receiving transfusions at baseline who have a reduction of >=50% in transfusion units in any rolling 12 week period from week 12 onwards, compared to the 12 weeks prior to treatment.
Derived from data on hemoglobin level and transfusions.
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Any time from week 12 to week 24 (expansion phase) or to week 52 (add-on phase)
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
一般刊物
- Vachhani P, Tan P, Watson AM, Wu SJ, Baker R, Cheung S, Lee SE, Chen CC, Chen TY, Hsiao HH, Lee JH, Masarova L, Tan SY, Baskar J, Charlton B, Findlay A, Hamprecht D, Jarolimek W, Leadbetter J, Miller J, Morgan K, Zahoor A, Hobbs G. A phase I/IIa trial of PXS-5505, a novel pan-lysyl oxidase inhibitor, in advanced myelofibrosis. Haematologica. 2025 Oct 1;110(10):2376-2387. doi: 10.3324/haematol.2024.287231. Epub 2025 Apr 17.
- Vachhani P, Baskar J, Charlton B, et al. PXS-5505-MF-101: a phase 1/2a study to evaluate safety, pharmacokinetics and pharmacodynamics of PXS-5505 in patients with primary, post-polycythemia vera or post-essential thrombocythemia myelofibrosis. Blood. 2023; 142 (Supplement 1): 625-7. https://doi.org/10.1182/blood-2023-181383
- Tan P, Baker R, Lee SE, et al. Multicenter, Open-Label Phase 1/2a Study of PXS-5505 and Ruxolitinib in Patients with Primary, Post-Polycythemia Vera (PV) or Post-Essential Thrombocythemia (ET) Myelofibrosis. Blood. 2024; 144 (Supplement 1): 1001-2. https://doi.org/10.1182/blood-2024-204290
- Baker R, Chen CC, Tsai YC, et al. A phase 1/2a trial of amsulostat, a novel pan-lysyl oxidase inhibitor, in patients with advanced myelobrosis as an add-on to ruxolitinib treatment for up to 52 weeks. Blood. 2025; 146 (Supplement): 2027-8. https://doi.org/10.1182/blood-2025-2027
- Baker R, Baskar J, Charlton B, et al. Phase 1/2a study to evaluate safety, pharmacokinetic and pharmacodynamic dose escalation and expansion study of PXS-5505 in patients with primary, post-polycythemia vera or post-essential thrombocythemia myelofibrosis. Blood. 2022; 140 (Supplement 1): 3947-8. https://doi.org/10.1182/blood-2022-158344
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2021年2月18日
初级完成 (实际的)
2025年7月9日
研究完成 (实际的)
2025年7月9日
研究注册日期
首次提交
2020年12月8日
首先提交符合 QC 标准的
2020年12月18日
首次发布 (实际的)
2020年12月21日
研究记录更新
最后更新发布 (实际的)
2026年8月4日
上次提交的符合 QC 标准的更新
2026年7月9日
最后验证
2026年7月1日
更多信息
与本研究相关的术语
其他研究编号
- PXS5505-MF-101
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)?
不
药物和器械信息、研究文件
研究美国 FDA 监管的药品
是的
研究美国 FDA 监管的设备产品
不
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.