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Multimodal Evaluation-Guided Surveillance-Intervention With Endoscopic Selective Neck Dissection for Post-Radiotherapy N3 Nasopharyngeal Carcinoma

3 de julio de 2026 actualizado por: Xuelei Ma MD
This randomized trial evaluates a multimodal surveillance strategy in nasopharyngeal carcinoma patients with high-risk N3 cervical lymph node involvement after radiotherapy. Patients are assigned to standard follow-up or an enhanced strategy using CEUS, imaging, and EBV DNA for risk assessment. The intervention group uses multimodal evaluation to identify high-risk patients who may undergo multidisciplinary review and selective neck dissection when indicated. The primary endpoint is failure-free survival (FFS). Secondary endpoints include OS, LRRFS, DMFS, and safety .

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

This is a multicenter, randomized controlled clinical trial evaluating a multimodal evaluation-guided surveillance and intervention strategy in patients with nasopharyngeal carcinoma (NPC) with high-risk N3-stage cervical lymph node involvement after radiotherapy. The study investigates whether combining contrast-enhanced ultrasound (CEUS), conventional imaging (CT/MRI), and Epstein-Barr virus (EBV) DNA monitoring can improve risk stratification, early detection of residual disease, and optimize subsequent treatment decision-making.

Eligible patients will be randomly assigned in a 1:1 ratio to receive either standard post-radiotherapy follow-up or a multimodal evaluation-guided surveillance and intervention strategy. In the control group, patients will receive standard follow-up care according to clinical guidelines. No CEUS or structured multimodal risk stratification will be applied in this group. In the intervention group, patients will undergo an enhanced follow-up strategy based on multimodal evaluation, which integrates CEUS, conventional imaging, and EBV DNA to stratify the risk of residual lymph node disease. Patients identified as high/ very high-risk may receive further multidisciplinary evaluation, and endoscopic selective neck dissection will be performed when indicated.

The primary endpoint is failure-free survival (FFS), defined as the time from randomization to the first occurrence of locoregional recurrence, distant metastasis, or death from any cause, whichever occurs first. Secondary endpoints include overall survival (OS), locoregional relapse-free survival (LRRFS), distant metastasis-free survival (DMFS), and treatment-related safety. Safety will be evaluated according to CTCAE version 5.0. A total of 80 patients will be enrolled across multiple centers in China.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

80

Fase

  • No aplica

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

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  1. Aged 18 to 70 years.
  2. Pathologically confirmed nasopharyngeal non-keratinizing carcinoma (differentiated or undifferentiated, i.e., WHO Type II or III).
  3. Tumor staged as TanyN3M0 according to the 9th Edition of the American Joint Committee on Cancer/Union for International Cancer Control (AJCC/UICC) staging system.
  4. ECOG performance status 0-1.
  5. No previous neck dissection.
  6. Adequate hematologic, hepatic, and renal function, defined as: white blood cell count ≥4.0 × 10^9/L, absolute neutrophil count ≥2.0 × 10^9/L, hemoglobin ≥90 g/L, platelet count ≥100 × 10^9/L, aspartate aminotransferase and alanine aminotransferase ≤2.5 × the upper limit of normal, and creatinine clearance ≥60 mL/min
  7. Written informed consent provided prior to study enrollment

Exclusion Criteria:

  1. Ongoing receipt of other antitumor treatment or concurrent participation in another interventional clinical trial.
  2. Pregnancy or breastfeeding.
  3. Severe concomitant disease that may, in the investigator's judgment, pose an unacceptable risk or compromise study compliance, including severe cardiac disease, severe pulmonary dysfunction, significant renal disease, or severe psychiatric illness.
  4. History of another invasive malignancy within 5 years before enrollment, except for adequately treated basal cell carcinoma of the skin, cervical carcinoma in situ, or superficial bladder tumors (Ta, Tis, or T1).

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: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Multimodal Evaluation-Guided Surveillance-Intervention Strategy
Participants underwent multimodal follow-up evaluation after radiotherapy, including clinical assessment, conventional imaging, Epstein-Barr virus DNA testing, and contrast-enhanced ultrasound. Participants with suspicious residual cervical lymph nodes identified by multimodal evaluation and suitable for surgery underwent endoscopic selective neck dissection.
Participants underwent multimodal follow-up evaluation after radiotherapy. Endoscopic selective neck dissection was performed only in participants with suspicious residual cervical lymph nodes identified by multimodal evaluation and with surgical indications.
Sin intervención: Standard follow-up strategy
Patients will receive standard follow-up care according to clinical guidelines. No CEUS or structured multimodal risk stratification will be applied in this group.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Failure-free Survival
Periodo de tiempo: From randomization to disease failure, death, or last follow-up, up to 60 months.
Failure-free survival (FFS) is defined as the time from randomization to the first occurrence of locoregional recurrence, distant metastasis, or death from any cause, whichever occurs first.
From randomization to disease failure, death, or last follow-up, up to 60 months.

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Overall Survival
Periodo de tiempo: From randomization to death or last follow-up, up to 60 months
Overall survival is defined as the time from randomization to death from any cause. Participants alive at the last follow-up will be censored.
From randomization to death or last follow-up, up to 60 months
Distant Metastasis-Free Survival
Periodo de tiempo: From randomization to distant metastasis, death, or last follow-up, up to 60 months
Distant metastasis-free survival is defined as the time from randomization to the first occurrence of distant metastasis or death from any cause, whichever occurs first.
From randomization to distant metastasis, death, or last follow-up, up to 60 months
Locoregional Relapse-free Survival
Periodo de tiempo: From randomization to locoregional recurrence, death, or last follow-up, up to 60 months.
Locoregional relapse-free survival (LRRFS) is defined as the time from randomization to the first occurrence of locoregional recurrence or death from any cause, whichever occurs first.
From randomization to locoregional recurrence, death, or last follow-up, up to 60 months.
Incidence of Acute and Late Toxicity
Periodo de tiempo: From randomization to locoregional recurrence, death, or last follow-up, up to 60 months.
Incidence of acute toxicity is calculated for each adverse event respectively and severity is evaluated on basis of Common Terminology Criteria for Adverse Events (CTCAE) 5.0 criteria. Late radiation toxicities were assessed using the Radiation Therapy Oncology Group and European Organization for Research and Treatment of Cancer late radiation morbidity scoring scheme.
From randomization to locoregional recurrence, death, or last follow-up, up to 60 months.

Colaboradores e Investigadores

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

Patrocinador

Colaboradores

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 (Estimado)

1 de agosto de 2026

Finalización primaria (Estimado)

30 de junio de 2035

Finalización del estudio (Estimado)

30 de junio de 2035

Fechas de registro del estudio

Enviado por primera vez

3 de julio de 2026

Primero enviado que cumplió con los criterios de control de calidad

3 de julio de 2026

Publicado por primera vez (Actual)

9 de julio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

9 de julio de 2026

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

3 de julio de 2026

Última verificación

1 de junio de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • 2026 (1385)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

INDECISO

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. .