NCT03032913

Diagnostic Accuracy of Circulating Tumor Cells (CTCs) and Onco-exosome Quantification in the Diagnosis of Pancreatic Cancer - PANC-CTC

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 52 (actual)
• Sponsor: University Hospital, Bordeaux · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The proposal aims at determining whether liquid biopsy approaches are valid in the diagnosis of pancreatic cancer. Step1 will test 3 CTC isolation methods and analyse by flow cytometry the presence of onco-exosomes in the culture media of pancreatic cell lines. Step 2 will examine the diagnostic accuracy of these blood tumor elements for the diagnosis of cancer of patients with PDAC suspicion or recent diagnosis and their value for disease monitoring.

Detailed description

Pancreatic ductal adenocarcinoma (PDAC) incidence has increased with a high rate during the past few years (+4.7% per year between 2005 and 2012, source InfoCancer 2013). No cure is currently available for this deadly disease, with an overall survival \<5%. Survival can reach 20% when surgery is possible, giving the best chance to the patients. If patients present locally advance disease, it is crucial to quickly establish resectability to avoid unneeded and even deleterious surgery in patients with metastatic stages. It is also important to increase the rate of true R0 resection with effective preoperative therapy. However, when the cancer is suspected, neoadjuvant chemotherapies are often delayed because the mandatory histologic proof is difficult to make with non-informative biopsies. It is necessary to find new markers to help for rapid diagnosis that could allow neoadjuvant therapies and surgery when anatomo-pathologic proof is not available. New developments in the field of liquid biopsy hold great promise in providing valuable information for diagnosis assistance. The project will be run in two steps. First, several methods will be compared for tumor cell recovery after cell spiking in blood of non-cancer patients and pancreatic cell line onco-exosomes will characterized by flow cytometry. Second the best method will be used to detect and enumerate CTCs in 20 PDAC patients and 20 non-cancer patients. In parallel GPC1+ exosomes from patients' plasmas will be quantified. Diagnosis accuracy will be established and compared. Correlations between circulating tumor elements presence and clinical and biological parameters will be evaluated at the time of the diagnosis. Patient clinical outcome will be assessed according to initial circulating element quantification.

Conditions

• Pancreatic Ductal Adenocarcinoma (PDAC)

Interventions

Type	Name	Description
PROCEDURE	Blood samples	Blood samples for both group
PROCEDURE	Portal vein blood sample	Portal vein blood sample during surgery procedure for the Pancreatic Ductal Adenocarcinoma group

Timeline

• Start date: 2017-02-15
• Primary completion: 2017-11-13
• Completion: 2017-11-13
• First posted: 2017-01-26
• Last updated: 2018-04-10

Locations

1 site across 1 country: France