Histidine and Immunotherapy Response in Colorectal Cancer
Mechanistic Study of Histidine-mediated Regulation of Antigen Presentation in Colorectal Cancer to Enhance Sensitivity to Immunotherapy
Aperçu de l'étude
Statut
Statut
Les conditions
Les conditions
Intervention / Traitement
Intervention / Traitement
Type d'étude
Type d'étude
Inscription (Estimé)
Inscription
Contacts et emplacements
Coordonnées de l'étude
Coordonnées de l'étude
- Nom: Wan Du, M.D.
- Numéro de téléphone: (86)13788972966
- E-mail: duwan2017@126.com
Sauvegarde des contacts de l'étude
- Nom: Youli Chen
- Numéro de téléphone: (86)13656503169
- E-mail: chenylpetri@gmail.com
Critères de participation
Critère d'éligibilité
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Participants aged ≥18 years and ≤100 years.
- Patients pathologically diagnosed with colorectal cancer based on colonoscopy or surgical specimens and biopsy examination; or patients who previously received PD-1 monoclonal antibody immunotherapy for colorectal cancer.
Exclusion Criteria:
- Age <18 years.
- Presence of poorly controlled metabolic diseases, including hypertension, diabetes mellitus, hyperlipidemia, hyperuricemia, or hyperthyroidism.
- Presence of other severe gastrointestinal diseases, including inflammatory bowel disease, ischemic bowel disease, familial adenomatous polyposis, liver cirrhosis, MUTYH-associated polyposis (MAP), Lynch syndrome (LS), or Peutz-Jeghers syndrome (PJS).
- History of other malignant tumors, or pathological diagnosis of colorectal inflammatory polyps, hyperplastic polyps, neuroendocrine tumors, neuroendocrine carcinoma, or mixed neuroendocrine-non-neuroendocrine neoplasms.
- History of neurological or psychiatric disorders, such as epilepsy or depression.
- Unqualified specimens, including hemolyzed serum samples or tissue samples that were not properly preserved in time.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Nombre de groupes / cohortes
Cohortes et interventions
Groupe / CohorteGroupe / Cohorte |
Intervention / TraitementIntervention / Traitement |
|---|---|
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Colorectal cancer patients
Patients with pathologically confirmed colorectal cancer.
Colorectal tumor and adjacent normal tissue specimens will be analyzed for SLC15A3 expression, or serum specimen will be analyzed for histidine-related metabolites, or whole blood samples will be analyzed for peripheral blood immune cell functions.
|
Formalin-fixed paraffin-embedded (FFPE) colorectal tumor and adjacent normal tissue specimens will be analyzed for SLC15A3 expression by immunohistochemistry and/or immunofluorescence.
Peripheral blood mononuclear cells (PBMCs) will be separated from whole blood samples and assessed for immune cell phenotype and functional markers by flow cytometry.
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ICB responders
Patients with colorectal cancer who previously received PD-1 immune checkpoint blockade and achieved a clinical response.
Tumor tissue will be analyzed for SLC15A3 expression, and serum specimen will be analyzed for histidine-related metabolites.
|
Formalin-fixed paraffin-embedded (FFPE) colorectal tumor and adjacent normal tissue specimens will be analyzed for SLC15A3 expression by immunohistochemistry and/or immunofluorescence.
Serum specimens from patients with colorectal cancer will be analyzed for histidine and related metabolites and selected biomarkers by metabolomics and/or ELISA.
|
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ICB non-responders
Patients with colorectal cancer who previously received PD-1 immune checkpoint blockade and did not achieve a clinical response.
Tumor tissue will be analyzed for SLC15A3 expression, and serum specimen will be analyzed for histidine-related metabolites.
|
Formalin-fixed paraffin-embedded (FFPE) colorectal tumor and adjacent normal tissue specimens will be analyzed for SLC15A3 expression by immunohistochemistry and/or immunofluorescence.
Serum specimens from patients with colorectal cancer will be analyzed for histidine and related metabolites and selected biomarkers by metabolomics and/or ELISA.
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Que mesure l'étude ?
Principaux critères de jugement
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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SLC15A3 expression
Délai: Baseline archival tissue specimen from surgical resection or diagnostic biopsy.
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SLC15A3 expression measured by immunohistochemistry (IHC) or immunofluorescence in formalin-fixed paraffin-embedded colorectal tumor and adjacent normal tissue specimens.
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Baseline archival tissue specimen from surgical resection or diagnostic biopsy.
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Serum histidine concentration
Délai: Baseline and after 9 weeks (one round of treatment).
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Serum histidine concentration measured using liquid chromatography-mass spectrometry (LC-MS) in serum samples collected before treatment initiation and, where available, after 9 weeks (one round of treatment).
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Baseline and after 9 weeks (one round of treatment).
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Mesures de résultats secondaires
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Progression-free survival
Délai: 5 years.
|
Progression-free survival, defined as the time from initial diagnosis or treatment initiation to documented disease progression, recurrence, or death from any cause, whichever occurs first, in patients with colorectal cancer with available follow-up information.
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5 years.
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Overall survival
Délai: 5 years.
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Overall survival, defined as the time from initial diagnosis or treatment initiation to death from any cause in patients with colorectal cancer with available follow-up information.
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5 years.
|
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Percentage of IFN-gamma-positive T cells
Délai: Baseline and after 9 weeks (one round of treatment).
|
Peripheral blood mononuclear cells (PBMCs) from archived blood samples of patients with colorectal cancer will be assessed by flow cytometry to evaluate the percentage of IFN-gamma-positive T cells as a T cell effector function marker.
Samples collected before treatment initiation and, where available, after 9 weeks (one round of treatment) will be analyzed.
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Baseline and after 9 weeks (one round of treatment).
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Percentage of granzyme B-positive T cells
Délai: Baseline and after 9 weeks (one round of treatment).
|
Peripheral blood mononuclear cells (PBMCs) from archived blood samples of patients with colorectal cancer will be assessed by flow cytometry to evaluate the percentage of granzyme B-positive T cells as a T cell effector function marker.
Samples collected before treatment initiation and, where available, after 9 weeks (one round of treatment) will be analyzed.
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Baseline and after 9 weeks (one round of treatment).
|
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Clinicopathological characteristics
Délai: Baseline at initial diagnosis or tissue collection.
|
Clinicopathological characteristics of patients with colorectal cancer, including age, sex, tumor location, AJCC TNM stage, and histological grade, extracted from available medical records.
|
Baseline at initial diagnosis or tissue collection.
|
Collaborateurs et enquêteurs
Parrainer
Parrainer
Les enquêteurs
Les enquêteurs
- Chercheur principal: Jing-Yuan Fang, M.D., Division of Gastroenterology and Hepatology, NHC Key Laboratory of Digestive Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Début de l'étude
Achèvement primaire (Estimé)
Achèvement primaire
Achèvement de l'étude (Estimé)
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Première publication
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour publiée
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Tumeurs par site
- Tumeurs
- Maladies intestinales
- Tumeurs gastro-intestinales
- Tumeurs du système digestif
- Maladies du système digestif
- Maladies gastro-intestinales
- Tumeurs intestinales
- Maladies rectales
- Maladies du côlon
- Tumeurs colorectales
- Techniques d'investigation
- Techniques de laboratoire clinique
- Techniques et procédures de diagnostic
- Diagnostic
- Techniques cytologiques
- Techniques de chimie, analytique
- Séparation des cellules
- Histocytochimie
- Techniques histologiques
- Techniques immunologiques
- Photométrie
- Fluorométrie
- Mesures luminescentes
- Cytophotométrie
- Techniques de sondes moléculaires
- Techniques immunoenzymatiques
- Immunodosage
- Techniques d'immunosorption
- Immunohistochimie
- Cytométrie en flux
- Test immuno-enzymatique ELISA
- Fluorescent Antibody Technique
Autres numéros d'identification d'étude
Autres numéros d'identification d'étude
- KY2025-053-B
Informations sur les médicaments et les dispositifs, documents d'étude
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