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

5. November 2026 aktualisiert von: 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 .

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

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.

Studientyp

Interventionell

Einschreibung (Geschätzt)

20

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • Belgium
      • Antwerp, Belgium, Belgien, 2610
        • Rekrutierung
        • ZAS Augustinus
        • Kontakt:
        • Hauptermittler:
          • Ines Joye, PhD
      • Edegem, Belgium, Belgien, 2600
        • Rekrutierung
        • UZA
        • Kontakt:
        • Hauptermittler:
          • Johan Saenen, PhD

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

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.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: SBRT

A single radiation dose of 25 Gy is delivered to the VT target.

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

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Feasibility of SBRT for the treatment of ventricular tachycardia
Zeitfenster: 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.
Zeitfenster: 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

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in ventricular tachycardia burden following SBRT
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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.

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

25. Februar 2026

Primärer Abschluss (Geschätzt)

25. Februar 2032

Studienabschluss (Geschätzt)

25. Februar 2035

Studienanmeldedaten

Zuerst eingereicht

20. Oktober 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

5. November 2026

Zuerst gepostet (Tatsächlich)

12. November 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

12. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

5. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • CTO22012GZA

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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