DNA Methylation Biomarkers and Metastasis of Gastric Carcinoma
A Cohort Study on Prediction of Metastasis of Gastric Carcinoma by DNA Methylation Biomarkers
Aperçu de l'étude
Statut
Les conditions
Description détaillée
Background: Metastasis is the leading cause of death for gastric carcinoma (GC). Currently, GC prognosis is primarily determined based on the clinical data and pathological stages of patients at the time of diagnosis and treatment. However, successful management of GC patients is still hampered by lack of highly sensitive and specific biomarkers capable of predicting prognosis and likelihood of metastasis. GFRA1 hypomethylation along with SRF and ZNF382 hypermethylation were found to be potential synergistic biomarkers for the prediction of GC metastasis in our previous multi-center study. In addition, p16 and E-cadherin were also correlated with GC metastasis in Chinese cohort. To investigate the predictive value of those genes' methylation on metastasis potential in GC, we carried out the prospective cohort study.
Methods: 198 early stage GC patients without lymph node or distal metastasis were included in the present study. Baseline information of E-cadherin, GFRA1, p16, SRF and ZNF382 methylation status of the GC from 191 cases was obtained by MethyLight. The follow-up examination was carried out in a double-blind study with a 6-month interval. The association between gene methylation and metastasis of GC was analyzed with SPSS16.0 software. All P-values were two-sided.
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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Beijing
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Beijing, Beijing, Chine, 100000
- Beijing Cancer Hospital & Institute
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Histological diagnosis of gastric adenocarcinoma;
- Early stage GC without lymph node and distal metastasis;
- Availability of frozen, fresh GC and corresponding surgical margin samples;
- Available of methylation status of gene CpG island in the extracted DNA sample.
Exclusion Criteria:
- GC with lymph node or distal metastasis;
- Quality of the prepared DNA is not good enough for detection of gene methylation;
- GC cases were subjected to the neoadjuvant chemotherapy.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: Cohorte
- Perspectives temporelles: Éventuel
Cohortes et interventions
Groupe / Cohorte |
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gene-methylation
gene-low-level of methylation: patients with early stage gastric carcinoma containing low-level of methylation change of E-cadherin,GFRA1,p16,SRF and ZNF382 CpG island. gene-middle-level of methylation: patients with early stage gastric carcinoma containing middle-level of methylation change of E-cadherin,GFRA1,p16,SRF and ZNF382 CpG island. gene-high-level of methylation: patients with early stage gastric carcinoma containing high-level of methylation change of E-cadherin,GFRA1,p16,SRF and ZNF382 CpG island. gene-without of methylation: patients with early stage gastric carcinoma NOT containing methylated E-cadherin,GFRA1,p16,SRF or ZNF382 CpG island. |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Metastasis and/ or recurrence of gastric carcinoma
Délai: 3 years
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The hazard ratio, positive prediction value, and negative prediction value of metastasis/recurrence of gastric carcinomas are calculated according to the metastasis/recurrence frequences among patients with the different methylation status of each target gene CpG islands.
These patients are classified into four groups for each gene: A) cases without methylation change; B) cases with the low-level of methylation change (33.3% of cases with methylation change); C) cases with the middle-level of methylation change (33.3% of cases with methylation change); D) cases with the high-level of methylation change (33.3% of cases with methylation change).
Combination analysis will be carried out using Support Vector Classification model.
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3 years
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Disease-free (Recurrence/metastasis-free) survival (DFS) and overall survival (OS) of patients with gastric carcinoma after surgical resection
Délai: from 4 months to 144 months
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The classification of patients is the same as the primary outcome measure.
The log-rank test will be used to compare survival time between groups.
Cox-proportional hazards models will be used to identify independent predictors of survival (month) with adjustment for relevant clinical covariates
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from 4 months to 144 months
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Collaborateurs et enquêteurs
Collaborateurs
Les enquêteurs
- Directeur d'études: Dajun Deng, Master, Peking University Cancer Hospital & Institute
Publications et liens utiles
Publications générales
- Cao J, Zhou J, Gao Y, Gu L, Meng H, Liu H, Deng D. Methylation of p16 CpG island associated with malignant progression of oral epithelial dysplasia: a prospective cohort study. Clin Cancer Res. 2009 Aug 15;15(16):5178-83. doi: 10.1158/1078-0432.CCR-09-0580. Epub 2009 Aug 11.
- Liu Z, Cheng X, Zhang L, Zhou J, Deng D, Ji J. A panel of DNA methylated markers predicts metastasis of pN0M0 gastric carcinoma: a prospective cohort study. Br J Cancer. 2019 Oct;121(7):529-536. doi: 10.1038/s41416-019-0552-0. Epub 2019 Aug 21.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- Methylation-14414
Informations sur les médicaments et les dispositifs, documents d'étude
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