Neoplasms

Digestive System Diseases

All Conditions

Colonic Neoplasms

Colorectal Neoplasms

Intestinal Neoplasms

Gastrointestinal Neoplasms

Digestive System Neoplasms

Gastrointestinal Diseases

Colonic Diseases

Intestinal Diseases

Herbal and Botanical

All Drugs and Chemicals

Cola

Colorectal surgery (resection) and blood sampling are done for patient with colorectal cancer

Colorectal surgery (resection) is done for patient with colorectal cancer

Colorectal surgery (resection)

Pre-operative blood sampling is done for patient with colorectal cancer

Blood sampling

David SEFRIOUI, MD

Colorectal cancer (CRC) is one of the most common cancers in France (36,000 new cases / year) and nearly 16,000 people die each year from this disease. The lymph node involvement of the surgical specimen is today the main tool on which is based the adjuvant treatment decision after curative surgical resection. The study of new predictive factors to identify patients at risk for developing a local or metastatic recurrence is therefore a major challenge.

It is now clear that the immune system plays a role in the control of tumor's development, and it was shown that there was a correlation between the presence of a CD3+ T-lymphocyte infiltrate in colorectal cancers and patient survival. Preliminary studies suggest an important role of regulatory T-lymphocyte in the modulation of the antitumor immune response. The aim of our study is to follow a cohort of patients operated for colon cancer with curative intent to highlight the prognostic characteristics of the tumoral infiltrate by various lymphocyte populations (particularly T-lymphocytes but also B-lymphocytes and regulatory lymphocytes). It will be performed a preoperative analysis of blood circulating lymphocytes with antibodies specific for different cell populations (CD3, CD4, CD8, CD56, CD16, CD19, CD2) and stage of activation (CD25, CD69, HLA-DR ) or differentiation (CD24, CD38, CD27, CD103, CD62L, CCR7, CD45RA / RO, IgD). The presence of regulatory T-lymphocytes will also be analyzed. It will be performed on tumor sample a Tissue Microarrays for immunohistochemical study to determine the presence of different lymphocyte populations. We systematically study the markers CD68 (monocytes / macrophages), CD56 (NK cells), CD20 and CD79a (B cells / plasma cells), CD3 (T cells), CD8 (cytotoxic T), CD4 (helper T) FoxP3 (regulatory T), cytotoxicity of CD8 markers (Fas ligand, perforin and granzyme) and MHC I (antigen presentation) to explore the innate and adaptive immune responses. For each section, the different zones will be analyzed (center and invasive margin and healthy tissue). The main objective of the study is the influence of the tumor infiltration rate by CD3 + T cells on disease free survival at 2-years in patients with non-metastatic colon cancer resection. The secondary objective is to search a correlation between the rate of T-lymphocytes on preoperative blood sample and on tumor sample.

Prognostic Value of the Lymphocytic Infiltrate in Colon Cancers

University Hospital, Rouen

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Prognostic Value of the Lymphocytic Infiltrate in Colon Cancers	NCT02557061	Colorectal Canc...	Colorectal surg... Blood sampling	18 Years -	University Hospital, Rouen
Prognostic Value of the Lymphocytic Infiltrate in Colon Cancers	NCT02557061	Colorectal Canc...	Colorectal surg... Blood sampling	18 Years -	University Hospital, Rouen

Spots Global Cancer Trial Database for colorectal surgery (resection)