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Radiation Therapy Before Surgery Compared With Chemotherapy Plus Radiation After Surgery in Treating Patients With Rectal Cancer That Can Be Surgically Removed

2014-08-27 03:58:41 | BioPortfolio

Summary

RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known whether giving radiation therapy before surgery is more effective than giving chemotherapy plus radiation therapy after surgery in treating patients with rectal cancer.

PURPOSE: This randomized phase III trial is studying radiation therapy given before surgery to see how well it works compared to chemotherapy and radiation therapy given after surgery in treating patients with rectal cancer that can be surgically removed.

Description

OBJECTIVES:

- Compare local recurrence free rates and quality of life in patients with operable rectal cancer receiving preoperative radiotherapy versus patients receiving selective postoperative chemoradiotherapy.

- Determine local recurrence free survival, overall survival, time to appearance of distant metastases, disease free survival and morbidity in these patients.

OUTLINE: This is a randomized, multicenter study. Patients are stratified by a number of factors including surgeon.

Patients are randomized to receive preoperative radiotherapy (arm I) or postoperative chemoradiotherapy (arm II).

- Arm I: Patients receive radiotherapy in 5 fractions over 1 week prior to surgery. Patients undergo surgery within 7 days of the last fraction of radiotherapy.

- Arm II: Patients receive chemoradiotherapy 4-12 weeks after surgery (if circumferential resection margins are histologically involved by tumor). Radiotherapy is administered in 25 fractions over 5 weeks (5 days per week). During radiotherapy, patients either receive fluorouracil (5-FU) continuous infusion, 5-FU bolus IV and leucovorin calcium IV weekly, or a 5-day bolus schedule of 5-FU and leucovorin calcium.

Patients may then receive adjuvant chemotherapy as per local policy.

Quality of life assessments are made every 3 months for 1 year and then every 6 months for the next 2 years.

Patients are followed every 3 months for 1 year, every 6 months for 2 years, and then annually thereafter.

PROJECTED ACCRUAL: Approximately 1800 patients will be accrued into this study.

Study Design

Allocation: Randomized, Primary Purpose: Treatment

Conditions

Colorectal Cancer

Intervention

fluorouracil, leucovorin calcium, adjuvant therapy, conventional surgery, neoadjuvant therapy, radiation therapy

Location

Tom Baker Cancer Centre - Calgary
Calgary
Alberta
Canada
T2N 4N2

Status

Active, not recruiting

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:58:41-0400

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Medical and Biotech [MESH] Definitions

Drug therapy given to augment or stimulate some other form of treatment such as surgery or radiation therapy. Adjuvant chemotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.

Preliminary cancer therapy (chemotherapy, radiation therapy, hormone/endocrine therapy, immunotherapy, hyperthermia, etc.) that precedes a necessary second modality of treatment.

The active metabolite of FOLIC ACID. Leucovorin is used principally as its calcium salt as an antidote to folic acid antagonists which block the conversion of folic acid to folinic acid.

Combined chemotherapy and radiotherapy given to augment some other form of treatment such as surgery. It is commonly used in the therapy of cancer.

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