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Multicenter Study for External Validation of the TB-NET Score (TB-NET)

Multicentric Study for External Validation of the TB-NET Score

This is a retrospective, observational, multicenter study aiming to externally validate the TB-NET Score in an independent cohort of patients with advanced well-differentiated gastroenteropancreatic neuroendocrine tumors (GEP-NETs) or lung carcinoids. The primary objective is to validate the prognostic value of the TB-NET Score for progression-free survival (PFS). Secondary objectives include the evaluation of overall survival (OS), objective response rate (ORR), grade 3-4 adverse events, biochemical and functional imaging correlates, and the potential additional prognostic value of tumor growth rate (TGR).

Aperçu de l'étude

Statut

Recrutement

Les conditions

Description détaillée

This is a retrospective, observational, multicenter study designed to externally validate the TB-NET Score in an independent cohort of patients with advanced well-differentiated neuroendocrine tumors.

Eligible patients will include adults with histologically confirmed advanced well-differentiated gastroenteropancreatic neuroendocrine tumors (GEP-NETs) or typical or atypical lung carcinoids who have received systemic therapy. GEP-NETs may be grade 1, 2, or 3, provided that well-differentiated morphology is confirmed. Patients with poorly differentiated neuroendocrine carcinomas will be excluded.

The primary objective is to externally validate the prognostic value of the TB-NET Score for progression-free survival (PFS). Secondary objectives include the assessment of overall survival (OS), objective response rate (ORR), grade 3-4 adverse events, biochemical and functional imaging correlates, and evaluation of whether tumor growth rate (TGR) provides additional prognostic information for PFS.

A minimum of 200 patients is planned, with no predefined maximum sample size. Clinical, pathological, radiological, treatment, and outcome data will be retrospectively collected by participating centers and entered into a centrally coordinated electronic data capture system. Statistical analyses will be performed centrally by the Gastrointestinal Tumors Unit at Fundación Jiménez Díaz.

Only pseudonymized data will be shared for the purposes of the study. Data transfers between participating centers and the Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz (IIS-FJD) will be governed by appropriate data transfer agreements when required. The study has received approval from the Research Ethics Committee of Fundación Jiménez Díaz.

Type d'étude

Observationnel

Inscription (Estimé)

400

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

Lieux d'étude

    • Bavaria
      • Erlangen, Bavaria, Allemagne, 91054
        • Recrutement
        • Universitätsklinikum Erlangen
        • Contact:
    • São Paulo
      • São Paulo, São Paulo, Brésil, 01308-050
        • Recrutement
        • Hospital Sírio-Libanês
        • Contact:
    • Cantabria
      • Santander, Cantabria, Espagne, 39008
        • Recrutement
        • Hospital Universitario Marqués de Valdecilla
        • Contact:
    • Madrid
      • Madrid, Madrid, Espagne, 28040
        • Recrutement
        • Hospital Universitario Fundación Jiménez Díaz
        • Contact:
      • Clichy, France, 92110
        • Recrutement
        • Hôpital Beaujon
        • Contact:
    • Lombardy
      • Milan, Lombardy, Italie, 20132
        • Recrutement
        • IRCCS Ospedale San Raffaele
        • Contact:
    • Lesser Poland Voivodeship
      • Krakow, Lesser Poland Voivodeship, Pologne, 30-688
        • Recrutement
        • University Hospital in Kraków
        • Contact:
          • Marta Opalinska, MD, PhD
          • Numéro de téléphone: +48 12 400 10 00
          • E-mail: mkal@vp.pl
    • Skåne County
      • Malmö, Skåne County, Suède, 214 28
    • Ankara
      • Ankara, Ankara, Turquie (Türkiye), 06080
        • Recrutement
        • Hacettepe University Hospitals
        • Contact:
    • Massachusetts
      • Boston, Massachusetts, États-Unis, 02215

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Patients with histologically confirmed well differentiated advanced GEP-NETs or Lung Carcinoids starting any line of systemic therapy.

La description

Inclusion Criteria:

  • Adult patients with histologically confirmed well differentiated advanced GEP-NETs or Lung Carcinoids starting any line of systemic therapy.
  • Grade 1, 2 or 3 if well-differentiated morphology for GEP-NETs. Typical or Atypical Lung Carcinoids.
  • At least one target lesion.

Exclusion Criteria:

  • Patients with Neuroendocrine Carcinomas.
  • Patients with no target lesions (according to RECIST 1.1 criteria).

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Modèles d'observation: COHORT
  • Perspectives temporelles: RETROSPECTIVE

Cohortes et interventions

Groupe / Cohorte
Patients With Advanced Well-Differentiated NETs

Adult patients with histologically confirmed well differentiated advanced GEP-NETs or Lung Carcinoids starting any line of systemic therapy.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Progression-Free Survival (PFS)
Délai: From treatment initiation until the first documented disease progression or death from any cause, whichever occurs first, assessed up to 120 months.

Progression-free survival, defined as the time from treatment initiation to documented disease progression. Patients without documented progression at the end of follow-up will be censored at the date of the last follow-up without progression.

From treatment initiation until the first documented disease progression or death from any cause, whichever occurs first, assessed up to 120 months.

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Objective Response Rate (ORR)
Délai: From treatment initiation until disease progression or the last tumor response assessment, assessed up to 120 months.

Response rate defined by RECIST 1.1

From treatment initiation until disease progression or the last tumor response assessment, assessed up to 120 months.
Overall Survival (OS)
Délai: From treatment initiation until death from any cause or last follow-up, assessed up to 120 months.

The time from treatment initiation to death; patients alive at the end of follow up will be censored at the time of last follow up.

From treatment initiation until death from any cause or last follow-up, assessed up to 120 months.

Autres mesures de résultats

Mesure des résultats
Description de la mesure
Délai
Incidence of Grade 3-4 Adverse Events According to CTCAE
Délai: From treatment initiation until treatment discontinuation or the last available safety assessment, assessed up to 120 months.

The proportion of patients experiencing at least one Grade 3 or 4 adverse event during treatment, assessed according to the Common Terminology Criteria for Adverse Events (CTCAE). Grade 3 adverse events are defined as severe, and Grade 4 adverse events as life-threatening.

From treatment initiation until treatment discontinuation or the last available safety assessment, assessed up to 120 months.
Correlation of Chromogranin A, 5-HIAA, and Neuron-Specific Enolase Levels With TB-NET Score
Délai: At baseline, prior to treatment initiation.

The association between baseline biochemical marker levels, including chromogranin A (CgA), 5-hydroxyindoleacetic acid (5-HIAA), and neuron-specific enolase (NSE), and tumor burden assessed using the TB-NET Score will be evaluated. Correlations will be analyzed separately for each biomarker using appropriate statistical methods.

At baseline, prior to treatment initiation.
Percentage of Patients With Positive Baseline 18F-FDG PET/CT According to TB-NET Score Risk Group
Délai: At baseline, prior to treatment initiation.

The percentage of patients with positive baseline fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) will be calculated separately for the low-risk (TB-NET Score 1-2) and high-risk (TB-NET Score ≥3) groups. Imaging positivity will be assessed as a binary variable (positive versus negative) based on the imaging report. Only patients with available baseline 18F-FDG PET/CT results will be included. Unit of Measure: Percentage of patients.

At baseline, prior to treatment initiation.
Incremental Prognostic Value of Tumor Growth Rate at 3 and 6 Months for Progression-Free Survival
Délai: TGR assessed at 3 and 6 months after treatment initiation; subsequent PFS assessed from each landmark until disease progression or death from any cause, whichever occurs first, up to 120 months after treatment initiation.

The incremental prognostic value of tumor growth rate (TGR), assessed at 3 and 6 months after treatment initiation, will be evaluated for progression-free survival (PFS). TGR will be calculated using serial radiological tumor measurements and expressed as percentage tumor growth per month. Separate landmark analyses at 3 and 6 months will assess the association between TGR and subsequent PFS using Cox proportional hazards regression models, comparing the TB-NET Score alone with the TB-NET Score plus TGR.

TGR assessed at 3 and 6 months after treatment initiation; subsequent PFS assessed from each landmark until disease progression or death from any cause, whichever occurs first, up to 120 months after treatment initiation.
Percentage of Patients With Positive Baseline 68Ga-SSTR PET/CT According to TB-NET Score Risk Group
Délai: At baseline, prior to treatment initiation.

The percentage of patients with positive baseline gallium-68-labeled somatostatin receptor positron emission tomography/computed tomography (68Ga-SSTR PET/CT) will be calculated separately for the low-risk (TB-NET Score 1-2) and high-risk (TB-NET Score ≥3) groups. Imaging positivity will be assessed as a binary variable (positive versus negative) based on the imaging report. Only patients with available baseline 68Ga-SSTR PET/CT results will be included. Unit of Measure: Percentage of patients.

At baseline, prior to treatment initiation.
Percentage of Patients With Positive Baseline Somatostatin Receptor Scintigraphy According to TB-NET Score Risk Group
Délai: At baseline, prior to treatment initiation.

The percentage of patients with positive baseline somatostatin receptor scintigraphy (OctreoScan) will be calculated separately for the low-risk (TB-NET Score 1-2) and high-risk (TB-NET Score ≥3) groups. Imaging positivity will be assessed as a binary variable (positive versus negative) based on the imaging report. Only patients with available baseline OctreoScan results will be included. Unit of Measure: Percentage of patients.

At baseline, prior to treatment initiation.

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Les enquêteurs

  • Chercheur principal: Angela Lamarca, MD, PhD, Hospital Universitario Fundación Jiménez Díaz

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

12 mai 2026

Achèvement primaire (Estimé)

1 mars 2027

Achèvement de l'étude (Estimé)

1 septembre 2027

Dates d'inscription aux études

Première soumission

30 septembre 2026

Première soumission répondant aux critères de contrôle qualité

22 octobre 2026

Première publication (Réel)

29 octobre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

12 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

10 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • EO016-26_FJD

Plan pour les données individuelles des participants (IPD)

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