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CArdiac STereotactic Radiation Treatment for Ablation of ventRicular Tachycardia (CASTAR)

2026年11月5日 更新者：Cancer Research Antwerp

The investigator-initiated, CArdiac Stereotactic radiation Treatment for Ablation of ventRicular tachycardia (CASTAR) study will be conducted in patients with ventricular tachycardia (VT) which is either refractory to antiarrhythmic medication therapy in maximal dose or to catheter ablation or with contraindications to antiarrhythmic medication or catheter ablation.

The study is a non-randomized, multicenter, interventional study of cardiac SBRT, for which a total dose of 25 Gy will be delivered in a single fraction using volumetric modulated arc therapy (VMAT). The aim of the CASTAR study is to assess the feasibility and the safety of cardiac SBRT for the treatment of VT. Secondary objectives are efficacy, toxicity and QoL of cardiac SBRT for Ventricular tachycardia .

研究概览

地位

招聘中

条件

干预/治疗

详细说明

The study will be conducted at multiple centers across Belgium. Twenty patients will be enrolled to the study. Interim analyses are planned to be performed when the first five or ten subjects have been treated. Participation in the study will comprise a screening period, where screening assessments must be completed before starting treatment. Eligible, consenting patients will then undergo SBRT, which is limited to a single dose delivery on one day. During SBRT, patients are closely monitored in accordance with the DEGRO guidelines for radiotherapy in patients with ICDs (Gauter-Fleckenstein 2015). After SBRT, patients will be closely monitored during a 3-5 days hospitalization. The post-treatment phase will start after patients are discharged from the hospital. Patients will be followed on regular basis to assess safety and efficacy of SBRT treatment.

研究类型

介入性

注册 (估计的)

20

阶段

  • 不适用

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

  • 比利时
    • Belgium
      • Antwerp、Belgium、比利时、2610
        • 招聘中
        • ZAS Augustinus
        • 接触：
        • 首席研究员：
          • Ines Joye, PhD
      • Edegem、Belgium、比利时、2600
        • 招聘中
        • UZA
        • 接触：
        • 首席研究员：
          • Johan Saenen, PhD

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

有资格学习的性别

全部

描述

Inclusion Criteria:

  • Patients over the age of 18 with structural heart disease
  • Patients with ventricular tachycardia requiring intervention (e.g. an electrical shock or anti-tachycardia pacing via an Implantable Cardioverter Defibrillator (ICD)) which cannot be managed with medication or catheter ablation, or where there are contraindications to treatment with medication or catheter ablation.
  • Contraindications may exist due to comorbidities or due to the type or severity of the disease.
  • Informed consent to participate has been obtained from the patient or from his or her legal representative.

Exclusion Criteria:

  • Lack of evidence that the ventricular tachycardia is triggered by myocardial scarring (based on MRI, CT EAM).
  • Any contraindication to radiosurgery (e.g. inability to precisely define the target volume due to imaging artefacts caused by an LVAD)
  • Pregnancy
  • Previous radiotherapy that prevents the safe delivery of the dose.

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：不适用
  • 介入模型：单组作业
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：SBRT

A single radiation dose of 25 Gy is delivered to the VT target.
辐射：Stereotactic body radiation therapy (SBRT)

Stereotactic body radiation therapy (SBRT): a single radiation dose of 25 Gy is delivered to the VT target.

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
Feasibility of SBRT for the treatment of ventricular tachycardia
大体时间：Day of SBRT treatment (Day 1)

Feasibility will be assessed as the successful implementation and completion of cardiac SBRT without interruption of treatment. SBRT consists of a single fraction of 25 Gy delivered to the ventricular tachycardia target.
Day of SBRT treatment (Day 1)
Safety of SBRT for the treatment of ventricular tachycardia.
大体时间：From SBRT treatment through 31 days after SBRT

Safety will be assessed by the incidence and severity of adverse events related to radiotherapy following cardiac SBRT. Adverse events will be assessed and graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), version 5.0.
From SBRT treatment through 31 days after SBRT

次要结果测量

结果测量
措施说明
大体时间
Change in ventricular tachycardia burden following SBRT
大体时间：6 months before SBRT through 6 months after SBRT

The ventricular tachycardia (VT) burden will be assessed by the number of VT episodes recorded by ECG and implantable cardioverter-defibrillator (ICD) readouts. The number of VT episodes during the 6 months following SBRT will be compared with the number during the 6 months preceding SBRT. A 6-week blanking period immediately following SBRT will be taken into account in the analysis of VT recurrences.
6 months before SBRT through 6 months after SBRT
Time from SBRT to first VT recurrence
大体时间：From SBRT through 36 months after treatment

Time from SBRT treatment to the first documented recurrence of ventricular tachycardia, as determined from ICD readouts. A 6-week blanking period following SBRT will be considered in the analysis of VT recurrence.
From SBRT through 36 months after treatment
Time from SBRT to first sustained ventricular tachycardia or ICD shock
大体时间：From SBRT through 36 months after treatment

Time from SBRT treatment to the first occurrence of sustained ventricular tachycardia or the first appropriate ICD shock during follow-up.
From SBRT through 36 months after treatment
Time from SBRT to first ventricular tachycardia storm
大体时间：From SBRT through 36 months after treatment

Time from SBRT treatment to the first occurrence of a ventricular tachycardia storm during follow-up.
From SBRT through 36 months after treatment
Change in the number of electrical storms following SBRT
大体时间：6 months before SBRT through 6 months after SBRT

The number of electrical storms occurring following SBRT will be compared with the number occurring before SBRT treatment.
6 months before SBRT through 6 months after SBRT
Change in anti-tachycardia pacing and ICD shocks following SBRT
大体时间：6 months before SBRT through 6 months after SBRT

The number of anti-tachycardia pacing (ATP) interventions and ICD shocks following SBRT will be compared with the number occurring before SBRT treatment.
6 months before SBRT through 6 months after SBRT
Change in anti-arrhythmic medication use following SBRT
大体时间：From baseline through 36 months after SBRT

Anti-arrhythmic medication use will be assessed during follow-up. The type and dosage of anti-arrhythmic drugs will be collected to evaluate changes in the need for anti-arrhythmic treatment following SBRT.
From baseline through 36 months after SBRT
Overall survival following SBRT
大体时间：From SBRT through 36 months after treatment

Overall survival will be assessed from the date of SBRT treatment until death from any cause.
From SBRT through 36 months after treatment
Incidence of heart transplantation following SBRT
大体时间：From SBRT through 36 months after treatment

The number and proportion of participants requiring heart transplantation during follow-up will be assessed.
From SBRT through 36 months after treatment
Incidence of cardiac arrhythmic mortality following SBRT
大体时间：From SBRT through 36 months after treatment

The number and proportion of participants who die from a cardiac arrhythmic cause during follow-up will be assessed.
From SBRT through 36 months after treatment
Incidence of cardiac non-arrhythmic mortality following SBRT
大体时间：From SBRT through 36 months after treatment

The number and proportion of participants who die from a cardiac non-arrhythmic cause during follow-up will be assessed.
From SBRT through 36 months after treatment
Incidence and severity of acute radiation-related adverse events
大体时间：Through 90 days after SBRT

The incidence and severity of adverse events related to radiotherapy will be assessed and graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), version 5.0. Acute adverse events are defined according to the time period specified in the protocol.
Through 90 days after SBRT
Incidence and severity of late radiation-related adverse events
大体时间：The protocol defines late adverse events as those occurring more than 90 days after starting radiotherapy.

The incidence and severity of late adverse events related to radiotherapy will be assessed and graded according to NCI CTCAE version 5.0.
The protocol defines late adverse events as those occurring more than 90 days after starting radiotherapy.

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。

赞助

Cancer Research Antwerp

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)

2026年2月25日

初级完成 (估计的)

2032年2月25日

研究完成 (估计的)

2035年2月25日

研究注册日期

首次提交

2026年10月20日

首先提交符合 QC 标准的

2026年11月5日

首次发布 (实际的)

2026年11月12日

研究记录更新

最后更新发布 (实际的)

2026年11月12日

上次提交的符合 QC 标准的更新

2026年11月5日

最后验证

2026年11月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • CTO22012GZA

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

不

研究美国 FDA 监管的设备产品

不

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