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Gut Microbial Metabolites and Intestinal Permeability in Patients With Severe Tricuspid Regurgitation Undergoing Transcatheter Tricuspid Valve Intervention (INTEGRITY)

8 de noviembre de 2026 actualizado por: Muhammed Gerçek, Heart and Diabetes Center North-Rhine Westfalia

MicrobIal Metabolites and Gut Leakiness assessmeNT in Patients With sevEre Tricuspid reGuRgItation Undergoing Transcatheter Tricuspid Valve inTervention: a Multidimensional analYsis (INTEGRITY-Trial)

Emerging evidence highlights a bidirectional gut-heart axis, particularly relevant in patients with right heart failure. Elevated right atrial pressures and systemic congestion may impair intestinal perfusion and compromise epithelial integrity, leading to increased gut permeability ("leaky gut") and translocation of microbial products. These processes can trigger systemic inflammation and exacerbate cardiac dysfunction. Alterations in the gut microbiome-collectively referred to as dysbiosis-have also been linked to heart failure pathogenesis. However, the role of intestinal barrier dysfunction and microbial signatures in patients with severe tricuspid regurgitation (TR) remains largely unexplored.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

150

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

  • Nombre: Muhammed Gercek
  • Número de teléfono: 0049571971258
  • Correo electrónico: mugercek@hdz-nrw.de

Ubicaciones de estudio

  • Alemania
    • North Rhine-Westphalia
      • Bad Oeynhausen, North Rhine-Westphalia, Alemania, 32545
        • Reclutamiento
        • Herz- und Diabeteszentrum NRW

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • • Patients with functional tricuspid regurgitation (TR) who were evaluated for transcatheter tricuspid valve intervention

    • Written informed consent in accordance with Good Clinical Practice (GCP) and local legislation
    • Patients undergoing PFO closure without any other known comorbidities will serve as control group

Exclusion Criteria:

  • • Previous tricuspid valve repair or replacement

    • Echocardiographic evaluation not available or not suitable for analysis at baseline
    • Key information from patients (e.g. NYHA, TR grade) not available
    • Known allergy or intolerance against the studied device
    • Persons held in an institution by legal or official order

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Ciencia básica
  • Asignación: No aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador activo: TTVI Cohort

Patients with severe functional tricuspid regurgitation undergoing transcatheter tricuspid valve intervention (TTVI) as part of routine clinical care. The decision to perform TTVI is made independently of study participation. Patients undergo longitudinal assessment of gut microbial metabolites, intestinal permeability, and clinical parameters.
Procedimiento: transcatheter tricuspid valve intervention

transcatheter tricuspid valve intervention
Comparador activo: PFO Control Cohort

relevant comorbidities or heart failure. The decision to perform PFO closure is made independently of study participation. This cohort serves as a reference group for the assessment of gut microbial metabolite profiles and intestinal permeability.
Procedimiento: PFO Control Cohort

Patent Foramen Ovale (PFO) Closure

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in Gut Microbial Metabolite Plasma Levels
Periodo de tiempo: Baseline (prior to intervention) and 6 months post-intervention (180 ± 14 days)

Change in plasma concentrations of gut microbial metabolites from baseline to 6 months after intervention, assessed by liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Baseline (prior to intervention) and 6 months post-intervention (180 ± 14 days)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in Plasma Levels of Gut Microbial Metabolites at 30 Days
Periodo de tiempo: Baseline and 30 days post-intervention

Changes in plasma concentrations of gut microbial metabolites from baseline to 30 days after intervention, quantified using liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Baseline and 30 days post-intervention
Change in Intestinal Permeability at 6 Months
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Changes in intestinal permeability from baseline to 6 months after intervention, assessed using a differential sugar absorption test with lactulose, rhamnose, and sucrose.
Baseline and 6 months post-intervention (180 ± 14 days)
Moderate-to-Severe or Severe Tricuspid Regurgitation at 30 Days
Periodo de tiempo: 30 days post-intervention

Number of participants with moderate-to-severe or severe TR assessed by transthoracic echocardiography.
30 days post-intervention
Moderate-to-Severe or Severe Tricuspid Regurgitation at 6 Months
Periodo de tiempo: 6 months post-intervention (180 ± 14 days)

Number of participants with moderate-to-severe or severe TR assessed by transthoracic echocardiography.
6 months post-intervention (180 ± 14 days)
All-Cause Mortality
Periodo de tiempo: From intervention up to 6 months post-intervention

Number of participants who die from any cause during the follow-up period.
From intervention up to 6 months post-intervention
Heart Failure Rehospitalization
Periodo de tiempo: From intervention up to 6 months post-intervention

Number of participants experiencing at least one rehospitalization due to worsening heart failure during the follow-up period.
From intervention up to 6 months post-intervention
Change in New York Heart Association (NYHA) Functional Class
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in NYHA functional class from baseline to 6 months after intervention. NYHA functional class ranges from I (no limitation of physical activity) to IV (symptoms at rest). A lower class indicates better functional status.
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Kansas City Cardiomyopathy Questionnaire (KCCQ) Score
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in health-related quality of life assessed using the Kansas City Cardiomyopathy Questionnaire (KCCQ) from baseline to 6 months after intervention. Scores range from 0 to 100, with higher scores indicating better health status.
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Serum N-Terminal Pro-B-Type Natriuretic Peptide (NT-proBNP) Levels
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in serum NT-proBNP concentration from baseline to 6 months after intervention, assessed using laboratory blood analysis.
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Right Ventricular Basal Diameter
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in right ventricular basal diameter from baseline to 6 months after intervention, assessed by transthoracic echocardiography. Measurements are expressed in millimeters (mm).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Right Ventricular Fractional Area Change (RV FAC)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in right ventricular fractional area change from baseline to 6 months after intervention, assessed by transthoracic echocardiography as a measure of right ventricular systolic function. Measurements are expressed as percentages (%).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Right Ventricular Global Longitudinal Strain (RV GLS)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in right ventricular global longitudinal strain from baseline to 6 months after intervention, assessed by transthoracic echocardiography using speckle-tracking analysis. Measurements are expressed as percentages (%).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Tricuspid Annular Plane Systolic Excursion (TAPSE)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in tricuspid annular plane systolic excursion from baseline to 6 months after intervention, assessed by transthoracic echocardiography as a measure of right ventricular longitudinal systolic function. Measurements are expressed in millimeters (mm).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Estimated Systolic Pulmonary Artery Pressure (sPAP)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in estimated systolic pulmonary artery pressure from baseline to 6 months after intervention, assessed by transthoracic echocardiography using the tricuspid regurgitation jet pressure gradient and estimated central venous pressure. Measurements are expressed in millimeters of mercury (mmHg).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Left Ventricular Ejection Fraction (LVEF)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in left ventricular ejection fraction from baseline to 6 months after intervention, assessed by transthoracic echocardiography using the biplane Simpson method. Measurements are expressed as percentages (%).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Left Ventricular End-Systolic Volume (LVESV)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in left ventricular end-systolic volume from baseline to 6 months after intervention, assessed by transthoracic echocardiography. Measurements are expressed in milliliters (mL).
Baseline and 6 months post-intervention (180 ± 14 days)
Change in Left Ventricular End-Diastolic Volume (LVEDV)
Periodo de tiempo: Baseline and 6 months post-intervention (180 ± 14 days)

Change in left ventricular end-diastolic volume from baseline to 6 months after intervention, assessed by transthoracic echocardiography. Measurements are expressed in milliliters (mL).
Baseline and 6 months post-intervention (180 ± 14 days)

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Heart and Diabetes Center North-Rhine Westfalia

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

1 de septiembre de 2025

Finalización primaria (Estimado)

1 de junio de 2029

Finalización del estudio (Estimado)

1 de junio de 2029

Fechas de registro del estudio

Enviado por primera vez

11 de agosto de 2025

Primero enviado que cumplió con los criterios de control de calidad

8 de noviembre de 2026

Publicado por primera vez (Actual)

12 de noviembre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

12 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

8 de noviembre de 2026

Última verificación

1 de noviembre de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • HDZ-KA_0525_INTEGRITY

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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