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Genetic Markers in Patients With Colorectal Cancer

This study has been completed.
Sponsor:
Collaborator:
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Alliance for Clinical Trials in Oncology
ClinicalTrials.gov Identifier:
NCT00014079
First received: April 10, 2001
Last updated: July 12, 2016
Last verified: July 2016
History of Changes
April 10, 2001
July 12, 2016
September 1997
July 2003   (Final data collection date for primary outcome measure)
Determine the clinical and pathologic significance of unstable DNA elements [ Time Frame: Up to 5 years ]
Not Provided
Complete list of historical versions of study NCT00014079 on ClinicalTrials.gov Archive Site
Determine the clinical and pathologic significance of loss of heterozygosity [ Time Frame: Up to 5 years ]
Not Provided
Not Provided
Not Provided
 
Genetic Markers in Patients With Colorectal Cancer
Clinical Significance of Genetic Markers in Colon Cancer

RATIONALE: Determination of genetic markers for colorectal cancer may improve the identification of patients who are at highest risk for relapse.

PURPOSE: This clinical trial is studying the importance of genetic markers for detecting relapse in patients with colorectal cancer.

OBJECTIVES:

  • Determine the clinical and pathologic significance of unstable DNA elements in colorectal cancer (tumor microsatellite instability).
  • Determine the clinical and pathologic significance of loss of heterozygosity for chromosomes 5, 8, 17, and 18 (as the primary targets) and of chromosomes 1, 14, and 22 (as the secondary targets) in colorectal cancer.

OUTLINE: DNA is examined for unstable elements (microsatellite instability and loss of heterozygosity) by analyzing at least 10 separate (CA)n-repeats localized to 5 separate chromosomes (5q, 8p, 15, 17p, and 18q). Loss of heterozygosity is analyzed for at least four chromosomal arms (5q, 8p, 17p, and 18q) and later other chromosomes (e.g., 1, 14, and 22). Immunohistochemistry is used to test for the presence or absence of the genes involved in DNA mismatch repair (hMLH1 and hMSH2).

Patients do not receive the results of the genetic testing and the results do not influence the type or duration of treatment.

PROJECTED ACCRUAL: This study will accrue up to 708 specimens.
Observational
Observational Model: Case-Only
Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample
Patients have resectable adenocarcinoma of the colon or rectum and has been previously enrolled on N784852, N794604, N844652, N864751, N874651, and N894651.
Colorectal Cancer
  • Genetic: DNA stability analysis
  • Genetic: loss of heterozygosity analysis
  • Genetic: microsatellite instability analysis
Group 1

DNA is examined for unstable elements (microsatellite instability and loss of heterozygosity) by analyzing at least 10 separate (CA)n-repeats localized to 5 separate chromosomes (5q, 8p, 15, 17p, and 18q). Loss of heterozygosity is analyzed for at least four chromosomal arms (5q, 8p, 17p, and 18q) and later other chromosomes (e.g., 1, 14, and 22). Immunohistochemistry is used to test for the presence or absence of the genes involved in DNA mismatch repair (hMLH1 and hMSH2).

Patients do not receive the results of the genetic testing and the results do not influence the type or duration of treatment.

Interventions:
  • Genetic: DNA stability analysis
  • Genetic: loss of heterozygosity analysis
  • Genetic: microsatellite instability analysis
Ribic CM, Sargent DJ, Moore MJ, Thibodeau SN, French AJ, Goldberg RM, Hamilton SR, Laurent-Puig P, Gryfe R, Shepherd LE, Tu D, Redston M, Gallinger S. Tumor microsatellite-instability status as a predictor of benefit from fluorouracil-based adjuvant chemotherapy for colon cancer. N Engl J Med. 2003 Jul 17;349(3):247-57.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
675
May 2005
July 2003   (Final data collection date for primary outcome measure)

DISEASE CHARACTERISTICS:

  • Must have had a resectable adenocarcinoma of the colon or rectum and must have participated in one of the following NCCTG randomized clinical trials:

    • 784852: No Treatment Control Versus Levamisole Versus Levamisole Plus Fluorouracil (5-FU)
    • 794604: No Treatment Control Versus 5-FU by Portal Vein Infusion
    • 794751: Postoperative Radiation Versus Postoperative Radiation Plus Sequential Chemotherapy with Methyl CCNU and 5-FU
    • 844652: An Intergroup Study - An Evaluation of Levamisole Plus 5-FU as Surgical Adjuvant Treatment for Resectable Adenocarcinoma of the Colon
    • 864751: Phase III Protocol for Surgical Adjuvant Therapy of Rectal Carcinoma: A Controller Evaluation of (A) Protracted-Infusion 5-FU as a Radiation Enhancer and (B) 5-FU Plus Methyl-CCNU Chemotherapy
    • 874651: M/N - A Controller Evaluation of Recombinant Interferon-gamma (IFL GM) and 5-FU and Folinic Acid With or Without Levamisole as Adjuvant Treatment for Resectable Adenocarcinoma of the Colon
    • 894651: A Controller Phase III Evaluation of 5-FU Combined With Levamisole and Leucovorin as Adjuvant Treatment for Resectable Colon Cancer
  • Tissue blocks from the primary colorectal cancer must have been received by the NCCTG operations office
Sexes Eligible for Study: All
Child, Adult, Senior
No
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT00014079
NCCTG-934655
CDR0000065549 ( Registry Identifier: PDQ (Physician Data Query) )
No
Not Provided
Not Provided
Not Provided
Alliance for Clinical Trials in Oncology
Alliance for Clinical Trials in Oncology
National Cancer Institute (NCI)
Study Chair: Steven R. Alberts, MD Mayo Clinic
Alliance for Clinical Trials in Oncology
July 2016

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP