Presence of Circulating Tumor DNA in Colorectal Cancer (ALGECOLS)

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. Identifier: NCT01198743
Recruitment Status : Completed
First Posted : September 10, 2010
Last Update Posted : August 29, 2017
Information provided by (Responsible Party):
Assistance Publique - Hôpitaux de Paris

Brief Summary:

Cancer is a DNA disease characterized by the presence of genetics alterations in cancer cells.

The recent studies underline that these recurring alterations must be considered as a good molecular marker. In fact, they could use for tumor DNA detection in different biological fluids.

So, the main purpose is to define the presence of circulating tumor DNA in the patients plasma with colorectal cancer, by the presence of mutation (KRAS, NRAS, BRAF, APC, TP53 and MIRCOSATELLIE instability).

These molecular analysis will be done both in tumor and plasma samples,

This trial allows to characterize the prognostic value of circulating tumoral DNA presence in colorectal cancer.

Condition or disease
Colorectal Neoplasms

Detailed Description:

Two major issues appear in improving the prognosis of cancer patients, the first is early detection and the second is the risk of recurrence or the early diagnosis of recurrence in order to propose the most appropriate treatment for patients.

Cancer is a DNA disease that is characterized by the acquisition by the tumor cell during carcinogenesis of a number of recurrent genetic alterations. The development of molecular tools that can easily characterize these abnormalities specific to tumor cells, allows us to consider their use in clinical practice. These genetic alterations could represent useful molecular markers for detecting the presence of tumor DNA in various biological fluids including plasma of cancer patients. This circulating tumor DNA, whose nature is confirmed by the similarity of genetic alterations with those observed from DNA extracted from tumor cells of the patients, represents a molecular marker of cancer available from a single sample and could be an alternative to the use of more conventional markers such as CEA. We propose in this study to confirm the predictive value on the risk of recurrence or metastasis of circulating tumor DNA in plasma of patients with colorectal cancer from a cohort study (250 patients with non-metastatic colorectal cancer (Stage II and III). This is a multicenter prospective study. The cohort of patients will be followed for a minimum period of 36 months. A biological analysis of the tumor in search for the main genetic alterations of colorectal cancer cells will be made (KRAS, NRAS, TP53, BRAF and APC mutations as well as the presence of a microsatellite instability). These same genetic alterations will be sought on a plasma sample taken before surgery and during follow-up (9 samples in total). The objectives of this study will be 1/to assess the prognostic value of the presence of circulating tumor DNA in plasma, by searching for an association between the risk of and the presence of genetic alteration in the plasma of these patients, 2/to search for a relationship between initial rate of circulating tumor DNA and the risk of local recurrence,3/ to characterize the relationship between the type of alterations in the plasma at the initial diagnosis of circulating tumor DNA and the risk of recurrence 4/ to assess during the follow-up the prognostic value of the occurrence of tumor circulating DNA.

Study Type : Observational
Actual Enrollment : 261 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Search for the Presence of Genetic Alteration in the Plasma of Patients With Stage II-III Colorectal Cancers: Prognosis Impact
Study Start Date : November 2005
Actual Primary Completion Date : May 2017
Actual Study Completion Date : May 2017

Resource links provided by the National Library of Medicine

U.S. FDA Resources

Primary Outcome Measures :
  1. local recidivism or metastasis reappearance [ Time Frame: 6 months after operation ]

Secondary Outcome Measures :
  1. specificity and global safety [ Time Frame: 36 monhs after operation ]

Biospecimen Retention:   Samples With DNA
serum and tissue

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
defined population : patients suffer from colorectal cancers in stage II-III

Inclusion Criteria:

  • patients aged Superior to 18 and inferior to 85
  • Colon or rectal cancer stage II and III should be surgically treated
  • informed consent signed

Exclusion Criteria:

  • patients suffered from synchronous metastasis disease in initial cancer diagnosis
  • patients with 2 synchronous colorectal cancers
  • receiving chemotherapy or radiotherapy, before operation

Information from the National Library of Medicine

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 identifier (NCT number): NCT01198743

Paris, France, 75015
Sponsors and Collaborators
Assistance Publique - Hôpitaux de Paris
Principal Investigator: Pierre LAURENT-PUIG HEGP/ Paris Descartes University

Responsible Party: Assistance Publique - Hôpitaux de Paris Identifier: NCT01198743     History of Changes
Other Study ID Numbers: P040433
First Posted: September 10, 2010    Key Record Dates
Last Update Posted: August 29, 2017
Last Verified: August 2017

Keywords provided by Assistance Publique - Hôpitaux de Paris:
Genetics modifications
colorectal cancer
prognosis aim

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