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The Predictive Value of Guangzhou Panel for Recurrence in Early-stage Colorectal Cancer

This study aims to evaluate the predictive value of a four-gene methylation assay called Guangzhou Panel in early-stage colorectal cancer. Patients will be divided into two groups: high risk group and low risk group. The primary endpoint is 5 year disease free survival (DFS).

Studieoversigt

Status

Ikke rekrutterer endnu

Intervention / Behandling

Detaljeret beskrivelse

The current risk stratification system defined by clinicopathological features does not identify the risk of disease recurrence in patients with early-stage colorectal cancer (CRC) with optimal accuracy. The investigators aimed to investigate whether the epigenetic alterations could serve as novel prognostic biomarkers that would improve the accuracy of the current primary tumor, regional nodes, metastasis (TNM) staging system.

In the current study, the Investigators have analyzed the genome-wide methylation status of cytosine-phosphate-guanosine (CpG) sites using Infinium MethylationEPIC array in primary tumor and adjacent normal samples from 23 recurrent and 22 recurrence-free stage I and II CRC patients to identify potential methylation markers for disease-free survival (DFS). The prognostic value of the candidate biomarkers has been evaluated in a training cohort (n=174) and an independent validation cohort (n=267), and is to be validated in a prospective cohort (estimated n=287).

Comprehensive data analysis identified a subset of methylated CpG loci that associated with a high risk of recurrence. Methylated CpGs in four genes were significantly associated with DFS in multivariate analysis in both training and validation cohort. Moreover, Hypermethylated Genes Counts panel using these four markers showed a higher prognostic value than any clinicopathological factor, current molecular biomarkers or single methylated CpG marker alone in the training and validation cohorts. This four-gene methylation assay is defined as Guangzhou Panel.

The investigators aim to conduct a prospective observational study to evaluate the predictive value of Guangzhou Panel in early-stage colorectal cancer. A total of 287 patients with pathologically verified stage I-II CRC and underwent surgical resection are expected to be recruited in our study. These patients will be divided into high-risk group and low-risk group and will be followed up at least 5 years. The primary endpoint is 5-year disease free survival (DFS). The prognostic strength of candidate biomarkers was adjusted in multivariate Cox regression models including multiple biomarkers and clinicopathologic variables.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

287

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Guangdong
      • Guangzhou, Guangdong, Kina, 510655

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

40 år til 70 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

patients that had pathologically verified stage I-II CRC and underwent surgical resection in Sixth Affiliate Hospital of Sun Yat-sen University

Beskrivelse

Inclusion Criteria:

  1. TNM stage I-II (T1-4N0M0) colorectal cancer cases
  2. receive radical surgical resection
  3. have completed data of tumor location, histological type, behavioral characteristics or TNM staging
  4. have tumor specimens and either a valid microsatellite instability (MSI) or immuno-histochemistry (IHC) data
  5. have valid V-raf murine sarcoma viral oncogene homolog B1 (BRAF), kirsten rat sarcoma viral oncogene (KRAS), CpG island methylator phenotype (CIMP) results
  6. have at least 4 years of follow-up
  7. have valid time to local recurrence/metastasis in follow-up
  8. have clinical/treatment record data and valid preoperative status of intestinal obstruction or perforation (IOP), counts of lymph node removed in surgical resection.

Exclusion Criteria:

  1. have had a previous diagnosis of any cancer or presence of any tumor other than the CRC
  2. have had inflammatory bowel disease
  3. have had hereditary colorectal cancer syndromes, including Familial adenomatous polyposis, mutyh (MYH)-associated polyposis, Peutz-Jeghers syndrome, Juvenile polyposis coli, phosphate and tension homology deleted on chromosome ten (PTEN) tumor-hamartoma syndromes, Lynch Syndrome, and Familial Colorectal Cancer Type X.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
high-risk group
patients with any of the four genes hypermethylated
detecting the methylation status of colorectal cancer specimen
low-risk group
patients with none of the four genes hypermethylated
detecting the methylation status of colorectal cancer specimen

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
disease free survival
Tidsramme: From date of operation until the date of first recurrence or date of death from any cause, whichever came first, assessed up to 5 years
the length of time after primary treatment for a cancer ends that the patient survives without any signs or symptoms of that cancer
From date of operation until the date of first recurrence or date of death from any cause, whichever came first, assessed up to 5 years

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Efterforskere

  • Ledende efterforsker: Yanxin Luo, MD,PhD, The Sixth Affiliated Hospital, Sun Yat-sen University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Forventet)

30. april 2019

Primær færdiggørelse (Forventet)

30. april 2021

Studieafslutning (Forventet)

31. december 2026

Datoer for studieregistrering

Først indsendt

14. april 2019

Først indsendt, der opfyldte QC-kriterier

19. april 2019

Først opslået (Faktiske)

22. april 2019

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. april 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. april 2019

Sidst verificeret

1. marts 2019

Mere information

Begreber relateret til denne undersøgelse

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

IPD-planbeskrivelse

Our DNA methylation panel is applying for patent protection, therefore we plan to keep the data private for the time being.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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