Association of MSI, TS, DPD, MVD and EGFR With Chemosensitivity in Stage IV in Colorectal Cancer

The recruitment status of this study is unknown because the information has not been verified recently.
Verified July 2002 by National Taiwan University Hospital.
Recruitment status was  Active, not recruiting
Sponsor:
Information provided by:
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT00173472
First received: September 12, 2005
Last updated: November 23, 2005
Last verified: July 2002
  Purpose

The present project will follow our previous phaseⅡ study of FOLFOX regimens for the treatment of stage Ⅳ colorectal cancer. We will recruit at least 200 patients for this study. The selection of patients will be based on rigorous eligibility criteria. The patients will be allocated based on the expression of each molecular marker (MSI, TS, DPD, MVD and EGFR) and the implementation of chemotherapy. For example, in the examination for the clinical implications of EGFR, the patients will be classified into four groups: EGFR(+) chemotherapy(+); EGFR(+) chemotherapy(-); EGFR(-) chemotherapy(+); EGFR(-) chemotherapy(-). Base on the analysis of this 2×2 table, we will clarify the prognostic significance of a specific molecular marker is due to whether the specific molecular marker predicts biological invasiveness and/or chemosensitivity. We believe the present study will have the following significance: (1)To further clarify the mechanisms for the carcinogenesis and progression of CRC; (2)To facilitate the development of novel chemotherapeutic agents; and (3) To gain the experience for the practice of evidence-based medicine.


Condition Intervention Phase
Colorectal Cancer
Drug: Chemotherapy
Phase 3

Study Type: Observational
Study Design: Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Longitudinal
Official Title: Association of MSI, TS, DPD, MVD and EGFR With Chemosensitivity in Stage IV in Colorectal Cancer

Resource links provided by NLM:


Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 200
Study Start Date: July 2002
Estimated Study Completion Date: July 2005
  Hide Detailed Description

Detailed Description:

Stage IV disease represented approximately 25% of all colorectal cancer (CRC) cases. The mainstay treatment for stage IV CRC is chemotherapy and surgery is only for palliation of symptoms including colorectal bleeding and obstruction. If patients with stage IV CRC were not treated, the average survival time was 6 months. Recently, with the progress of chemotherapeutic agents, such as oxaliplatin and irinotecan, the stage IV patients’ average survival time considerably increased to 18 months. However, the currently utilized chemotherapeutic regimens, including FOLFOX (Folinic acid + 5-Fu +oxaliplatin) and FOLFIRI (Folinic acid + 5-Fu + irinotecan), their response rate was only around 50-60%. Moreover, these agents had several severe side-effects, such as neurotoxicity and diarrhea. Therefore, it is mandatory for us to seek clinicopathogical parameters or novel molecular markers that predicted chemosensitivity, in terms of increase of response rate and avoidance of side-effects. Recently, the carcinogenesis of CRC was better clarified than before. Some molecular markers, such as p53, K-ras, microsatellite instability (MSI), microvessel density(MVD), and epidermal growth factor receptor(EGFR), and their relation to survival of colorectal cancer patients have become the focus of research.

The present project basically follows our previous study that p53 overexpression predict poorer chemosensitivity(Liang et al. Int. J. Cancer 2002; 97: 451-457), and we plan to further explore the association between chemosensitivity with MSI-H, MVD, and EGFR. In fact, in either FOLFOX or FOLFIRI, they all belong to 5-Fu-based therapy. Therefore, the tumor expression of enzymes related to the metabolism of 5-Fu, such as thymidylate synthase(TS)and dipyrimidine dehydrogenase(DPD), have also become the hot issue of research. In this project, we will explore the clinical implications of MSI, TS, DPD, MVD, and EGFR. This is because our previous study has indicated that MSI-H is a marker of mutator phenotype of colorectal cancer, i.e., colorectal cancers with MSI-H tend to have multiple mutations of downstream genes, especially those with repetitive microsatellite sequences within the genes. Our previous study has shown MSI-H predicted better chemosensitivity(Liang et al. Int. J. Cancer 2002; 101: 519-525). Therefore, we are curious to know that if MSI-H is related to the alterations of TS and DPD in the tumor, i.e., if the alterations for the tumor levels of TS and DPD is one of the mechanisms for the better chemosensitivity in tumors with MSI-H. On the other hand, it has been known that EGFR is related to tumor growth, invasion, angiogenesis, and metastasis of colorectal cancers. Therefore, it is mandatory to further dissect the correlation between EGFR and MVD. To the best of our knowledge, this has not been published before.

The present project will follow our previous phaseⅡ study of FOLFOX regimens for the treatment of stage Ⅳ colorectal cancer. We will recruit at least 200 patients for this study. The selection of patients will be based on rigorous eligibility criteria. The patients will be allocated based on the expression of each molecular marker and the implementation of chemotherapy. For example, in the examination for the clinical implications of EGFR, the patients will be classified into four groups: EGFR(+) chemotherapy(+); EGFR(+) chemotherapy(-); EGFR(-) chemotherapy(+); EGFR(-) chemotherapy(-). Base on the analysis of this 2×2 table, we will clarify the prognostic significance of a specific molecular marker is due to whether the specific molecular marker predicts biological invasiveness and/or chemosensitivity. After the analysis of prognostic significance of each molecular marker, we will explore the interrelationship between these molecular markers. Also, all these 5 molecular markers and various clinicopathological factors will be subjected to multivariate analysis. Because the survival of stage Ⅳ CRC patients will generally not exceed 30 months, the patients study will not have to be followed up for a long time before the final study result appears. We believe the present study will have the following significance: (1)To further clarify the mechanisms for the carcinogenesis and progression of CRC; (2)To facilitate the development of novel chemotherapeutic agents; and (3) To gain the experience for the practice of evidence-based medicine.

  Eligibility

Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • The patients recruited met the following eligibility criteria: (1) The sporadic primary colorectal cancer could be palliatively resected and pathologically confirmed as adenocarcinoma; (2) The metastatic lesions were measurable but unresectable; (3) Karnofsky performance status was ≧50%; (4) The life expectancy was greater than 12 weeks; (5) WBC count was ≧4,000/μL, platelet count was ≧100,000/μL, serum bilirubin was ≦2.0 mg/dL, and serum glucose and electrolyte were normal.

Exclusion Criteria:

  • Patients with evident family history of colorectal cancer suggestive of familial adenomatous polyposis (FAP) or hereditary nonpolyposis colorectal cancer (HNPCC) were excluded from this study. Moreover, patients with evident carcinosis peritonitis were excluded from this study because their bowel function could not be restored through palliative operation and their prognosis was considered as very poor.
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00173472

Locations
Taiwan
Department of Surgery, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, TAIWAN, R.O.C.
Taipei, Taiwan, 100
Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Principal Investigator: Jin-Tung Liang, M.D., Ph.D. Department of Surgery, National Taiwan University Hospital, No.7, Chung-Shan South Road, Taipei, TAIWAN, R.O.C.
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00173472     History of Changes
Other Study ID Numbers: 9461700674
Study First Received: September 12, 2005
Last Updated: November 23, 2005
Health Authority: Taiwan: Department of Health

Keywords provided by National Taiwan University Hospital:
colorectal cancer, MSI, TS, DPD, EGFR, chemotherapy.

Additional relevant MeSH terms:
Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Neoplasms
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Rectal Diseases

ClinicalTrials.gov processed this record on April 17, 2014