Colorectal and pancreatobiliary cancers are the most common digestive cancers. Their incidence has particularly increased over the last few decades, leading to suspicion that environmental factors are involved. In addition, strategies for the therapeutic management of these cancers are evolving in the context of the development of immunotherapies. Tumor microenvironment is a potential source of new diagnostic, prognostic and predictive markers and new therapeutic targets. The links between tumor microenvironment and modulation of the immune system in colorectal and pancreatobiliary cancers are poorly understood. Molecular classifications have been proposed for these cancers, but their link with immunity and response to treatment remains to be explored. Objective : explore links between molecular subtypes, tumor microenvironment, host (immune system, pre-metastatic niche, intestinal microbiota, metabolism), and survival (prognostic value), response (predictive value) and tolerance (toxicities) to treatments in digestive cancers, in particular colorectal and pancreatobiliary cancers. Method: Retrospective and prospective monocentric cohort study
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
200
for each patient: liver sampling, blood samples ( serum, plasma, PBMC, whole blood), per-endoscopic bile sampling, stool samples, and materials derived from fresh tumors
overall survival
Overall survival (OS): vital status (alive/deceased)
Time frame: observation from first cancer treatment date until date of death or 10 years follow up if patient alive
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