Prospective Phase II Randomized Trial of Postoperative Adjuvant Chemotherapy in Patients With High Risk Colon Cancer
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT00201331 |
Recruitment Status : Unknown
Verified December 2005 by National Health Research Institutes, Taiwan.
Recruitment status was: Recruiting
First Posted : September 20, 2005
Last Update Posted : December 16, 2005
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Colonic Diseases Adenocarcinoma | Drug: leucovorin+5-FU | Phase 2 |
Approximately 75% of all patients with colon carcinoma present at a stage when all gross tumor can be surgically resected. Despite that high resectability rate, about 50% of all colon adenocarcinoma patients die of subsequent metastatic disease not apparent at surgery. These individuals could benefit from adjuvant local or systemic chemotherapy.
Based on the encouraging antitumor activity of 5-FU plus leucovorin(LV) in patients with metastatic colon carcinoma6,7, several investigators reported their results using this combination in the adjuvant setting. Results of an NSABP C-038 suggested that postoperative 5-FU plus leucovorin reduces the risk of colon cancer recurrence by 30% and the associated mortality by 32% compared with MOF(semustine, vincristine, and 5-FU). Recently, investigators from the IMPACT group9 analyzed the role of adjuvant 5-FU plus high dose leucovorin given 5 days every 28 days for a total of six courses versus no treatment in patients with stage II or III colon cancer. The treatment arm showed a significant reduction (by 22%) in mortality (P=0.029) and a 35% reduction in relapse rate (P=0.0001). Preliminary results from other studies have also suggested benefits of 5-FU plus leucovorin as adjuvant treatment of colon cancer10,11,12. Those studies had employed chemotherapy with 5-FU plus leucovorin, although there were differences in duration of treatment and drug dose among those trials, it is striking that all revealed a similar magnitude of benefit for adjuvant chemotherapy with 5-FU and leucovorin in node positive patients. At the present time, both 5-FU plus levamisole and 5-FU plus leucovorin can be considered acceptable adjuvant chemotherapy regimens for patients with node positive disease.
Thymidylate synthase(TS) is a critical therapeutic target for the fluoropyrimidine cytotoxic drugs that are the mainstay of the treatment for patients with advanced colorectal cancer. TS provide the sole de nono source of thymidylate for DNA synthesis. The clinical importance of TS in determining fluoropyrimidine cytotoxicity has been established in both clinical and preclinical study. Increased expression of TS protein due to underlying gene amplification has been described in cell lines selected for drug resistance by exposure to 5-FU.22,23 Several investigators have also demonstrated that intratumoral TS activity are predictive for response to 5-FU.24-26 High TS activity was associated with no response, whereas a low TS activity was associated with good response to 5-FU.
Study Type : | Interventional (Clinical Trial) |
Enrollment : | 162 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Prospective Phase II Randomized Trial of Postoperative Adjuvant Chemotherapy in Patients With High Risk Colon Cancer |
Study Start Date : | April 2002 |
Study Completion Date : | October 2012 |

- To compare the DFS and OS of HDFL vs. weekly bolus 5-FU plus high dose LV as adjuvant chemotherapy for N2 colon cancer
- 1. To evaluate safety and toxicity of both arm
- 2. To assess the impact of TS overexpression on patients with resectable N2 colon carcinoma.
- 3. To assess the disease-free survival of patients with high or low TS level of N2 colon cancer, when adjuvant chemotherapy of 5-FU was administered by bolus or continuous infusion .

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 70 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Signed written informed consent. Curative resection of colon cancer and upper rectal cancer, which is not planned for radiotherapy. Histologically proved adenocarcinoma of the colon. Stages: T1-4N2M0 (LN ≧4) Age less or equal to 70 years old. Performance status: 0 to 1 (ECOG) Adequate liver function (Bil. < 2 mg/dl, GOT, GPT< 3x normal limit) Adequate renal function (Cr < 2.0 mg/dl) Adequate bone marrow function(WBC ≧3500/mm3, Platelet ≧100000/mm3) Individual regular follow-up possible. 3.320 Patient who can receive adjuvant chemotherapy within 6 weeks after operation.
Patient who can receive a "indwelling catheter" surgery.
Exclusion Criteria:
Uncontrolled intercurrent illness, e.g. active infection or concurrent major systemic disease (e.g. psychosis, ESRD, heart failure [NYHA class III], liver cirrhosis [Child B&C], or AIDS). Intestinal obstruction or occlusion postoperation. Pregnant or lactating woman. Allergy to 5-Fluorouracil or leucovorin. Other primary cancer except skin squamous or basal cell carcinoma or cured in-situ cancer of the cervix.
Previous treatment of chemotherapy or radiotherapy.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00201331
Contact: Chiou Mei Liu | 886-2-26534401 ext 25158 | michelle@nhri.org.tw |
Taiwan | |
Chang Gung Memorial Hospital | Recruiting |
Tao-Yuan, Taiwan, 333 | |
Contact: Tsai-Sheng Yang, MD 886-3-3281200 ext 2114 a481124@adm.cgmh.org.tw |
Study Chair: | Cheng-Yi Wang, PHD | Chang Gung Memorial Hospital |
ClinicalTrials.gov Identifier: | NCT00201331 |
Other Study ID Numbers: |
T1202 |
First Posted: | September 20, 2005 Key Record Dates |
Last Update Posted: | December 16, 2005 |
Last Verified: | December 2005 |
Colonic Diseases Digestive System Diseases Gastrointestinal Diseases Intestinal Diseases Leucovorin Antidotes |
Protective Agents Physiological Effects of Drugs Vitamin B Complex Vitamins Micronutrients |