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

5 de novembro de 2026 atualizado por: 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 .

Visão geral do estudo

Status

Recrutamento

Condições

Intervenção / Tratamento

Descrição detalhada

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.

Tipo de estudo

Intervencional

Inscrição (Estimado)

20

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

  • Bélgica
    • Belgium
      • Antwerp, Belgium, Bélgica, 2610
        • Recrutamento
        • ZAS Augustinus
        • Contato:
        • Investigador principal:
          • Ines Joye, PhD
      • Edegem, Belgium, Bélgica, 2600
        • Recrutamento
        • UZA
        • Contato:
        • Investigador principal:
          • Johan Saenen, PhD

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Tudo

Descrição

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.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: N / D
  • Modelo Intervencional: Atribuição de grupo único
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: SBRT

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

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

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Feasibility of SBRT for the treatment of ventricular tachycardia
Prazo: 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.
Prazo: 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

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Change in ventricular tachycardia burden following SBRT
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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.

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Cancer Research Antwerp

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

25 de fevereiro de 2026

Conclusão Primária (Estimado)

25 de fevereiro de 2032

Conclusão do estudo (Estimado)

25 de fevereiro de 2035

Datas de inscrição no estudo

Enviado pela primeira vez

20 de outubro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

5 de novembro de 2026

Primeira postagem (Real)

12 de novembro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

12 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

5 de novembro de 2026

Última verificação

1 de novembro de 2026

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • CTO22012GZA

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

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