Clinical Research Directory

Immunoparalysis After Pancreaticoduodenectomy

By 2030, pancreatic adenocarcinoma could become the second leading cause of cancer-related death in France. To date, Pancreaticoduodenectomy (PD) is the standard treatment for resectable adenocarcinoma of the pancreatic head. Despite advances in perioperative care, morbidity remains high, and the occurrence of postoperative complications can negatively impact patient's oncologic prognosis. Sepsis is the leading cause of postoperative death following PD and it remains mainly associated with the development of a clinically-relevant postoperative pancreatic fistula (CR-POPF). More recently, post-pancreatectomy acute pancreatitis (PPAP) has been defined as a very early complication after pancreatic resection. PPAP is an ischemic and inflammatory condition of the pancreatic remnant that may be responsible for nearly half of CR-POPFs. CR-PPAP can lead to sepsis with multiorgan failure and necrotizing pancreatitis, which are with CR-POPF the two main indications for reoperation and completion pancreatectomy. Despite the major impact of severe pancreatic complications on mortality after PD, no reliable early biomarker currently exists to predict their occurence. Immunoparalysis refers to the functional impairment of immune cells with monocytes showing altered capacity of cell presentation. In classical models of inflammation such as acute pancreatitis, sepsis and surgery, the initial systemic inflammatory response syndrome is simultaneously accompanied by a compensatory anti-inflammatory reaction, which may lead to immunoparalysis. mHLA-DR (Human Leukocyte Antigen-DR on Monocytes) is considered as the most appropriate biomarker to assess this immune dysfonction. Various studies emphasize the predictive value of mHLA-DR for early detection of adverse outcomes : in acute pancreatitis, mHLA-DR predicts the onset of severe forms as early as admission and after colorectal surgery, mHLA-DR enables earlier detection of anastomotic leakage compared to conventional biomarkers. The main hypothesis is that the severity of postoperative complications is driven by immunological factors. On one hand, this study seeks to improve the understanding of the relationship between the immune response after PD and the occurrence of pancreatic complications. On the other hand, it aims to assess if mHLA-DR could represent an early biomarker for detecting severe pancreatic complications. Therefore, the main objective of this study is to evaluate the association of mHLA-DR expression in the early postoperative period following PD and the occurrence of severe pancreatic complications

Octreotide Microspheres for Preventing Pancreatic Fistula

This study is a randomized, double-blind, placebo-controlled, multicenter phase III clinical trial designed to evaluate the efficacy and safety of octreotide microspheres in preventing pancreatic fistula after distal pancreatectomy.

Reinforced Pancreaticojejunostomy With or Without glubran2

Pancreatic fistula is one of the most serious complication after pancreatoduodenectomy. To reduce pancreatic fistula, many authors recommend different techniques in pancreatojejunostomy. The purpose of this study is to determine which is the best method in preventing pancreatic fistula by enforce pancreaticojejunostomy with tissue glue .

External Pancreatic Stent in Pancreaticojejunostomy

Pancreatic fistula is one of the most serious complication after pancreatoduodenectomy. To reduce pancreatic fistula, many authors recommend pancreatic stent in pancreatojejunostomy. The purpose of this study is to determine which is the best method in preventing pancreatic fistula and to investigate its long term clinical outcomes.

Prevention of Postoperative Pancreatic Fistula Following Pancreaticoduodenectomy by Preoperative Radiotherapy : a Phase 2 Trial

Design of the study Prospective, single arm, multicentric, phase II open trial Number of participating sites 14 French centers of HPB Surgery departments associated with 14 Radiation Oncology Departments. Implementation of the study A screening of eligible patients will be made locally by the referring surgeon of each centre based on patient medical records. * Inclusion visit at the first surgical consultation (W-3 to D1) (V0) The inclusion visit will be done by the surgeon within 3 weeks before the first radiation oncologist visit * D1 (V1): first radiation oncologist visit * W2 (+/- 3D) and W4 (+/- 3D) (V2 et V3): Preoperative simulation process and treatment delivery * A first visit at W+2 (+/- 3 D) will be mandatory to validate the positioning of the target volume by CBCT with IV constrast or MRI * Then to start of the administration of radiotherapy at W+4 (+/- 3 D): Radiotherapy with 20 Gy, in 2 fraction of 10Gy with a one-day gap, so over a total period of 3 W9 ( +/- 1W) (V4): post-radiotherapy follow-up \- Preoperative visit Day-1 before PD (V5) W10 (+/- 1W) (V6): * Pancreaticoduodenectomy and post operative hospitalisation W14 (+/- 1W) (V7): follow up with surgeon (30 days after pancreaticoduodenectomy) * W22 (+/-1W) (V8): follow up with surgeon (90 days after pancreaticoduodenectomy) * W34 (+/-1W) (V9): Last study visit (radiation oncologist) (6 months after pancreaticoduodenectomy) Medical follow-up by radiation oncologist at 6 months after surgery to assess the occurrence of potential late toxicities due to radiotherapy

Preoperative EUS Elastography for Pancreatic Texture and POPF Prediction After PD

This prospective study evaluates whether preoperative endoscopic ultrasound elastography (EUS-E) can predict pancreatic texture during surgery and risk of postoperative pancreatic fistula (POPF) in 100 patients undergoing pancreaticoduodenectomy. EUS-E measures pancreatic stiffness preoperatively. Intraoperative texture ("soft" or "hard") is assessed by surgeons blinded to EUS-E results. POPF is graded using ISGPF criteria. Predictive accuracy of EUS-E will be analyzed statistically.

Laparoscopic Pancreaticoduodenectomy

Laparoscopic pancreaticoduodenectomy was first performed by Garner and Pomp in 1994. This is a technically difficult, time consuming and high rate of complication procedure. The reason is that duodenum and head of pancreas locate deeply in retroperitoneum and are surrounded by important structures such as inferior vena cava, abdominal aorta, superior mesenteric artery, superior mesenteric vein (SMV), portal vein (PV) and hepatic arteries. Injuring these structures during the surgery can lead to life-threatening complications. Moreover, doing anastomoses through laparoscopy, especially pancreatic anastomosis, is more difficult and takes more time than through open approach. The outcome of PD has improved over the last two decades due to advances in surgical techniques, anesthesia and perioperative care. Although studies from high volume centers demonstrate reduce in the operative mortality to less than 3%, the postoperative morbidity rate is still ranging from 30% to 60%. Laparoscopic surgery is being used increasingly as a less invasive alternative to traditional interventions for pancreatic resection. Laparoscopic pancreaticoduodenectomy (LPD) is a difficult procedure that has become increasingly popular. Nevertheless, comparative data on outcomes remain limited. In this prospective study, investigators evaluate the safety and feasibility of surgical and oncological outcomes of minimally invasive PD.

Predictive Risk Factors for Pancreatic Fistula After Pancreaticoduodenectomy

Pancreaticoduodenectomy (PD) is a complex procedure performed in patients with malignant or benign tumors of the pancreatic head and periampullary region, associated with high morbidity and mortality. Postoperative pancreatic fistula (POPF) is the most common and clinically significant complication following PD. In this study, the investigators aim to determine the predictive risk factors for clinically related postoperative pancreatic fistula (CR-POPF) in the preoperative, intraoperative and postoperative period in patients that underwent PD. The total number of 100 participants expected to be included in this research who underwent PD between 2025 and 2026.

Monitoring of patIents With Microdialysis Following Pancreaticoduodenectomy

A pancreaticoduodenectomy is performed in patient with pancreatic cancer. The most common and serious complication is leakage between the intestine and the remnant pancreas after this procedure. It occurs in 20-30%. The result is often prolonged hospital and ICU stay, reoperations and deaths (3-5%). To detect a leakage early before the patient becomes seriously ill, thereby initiating treatment is therefore very important. By inserting a thin microdialysis catheter near the anastomosis between pancreas and intestine before closure of the abdominal wall, the investigators will analyze substances such as lactic acid, pyruvate, glycerol, etc. and if these substances may reveal anastomosis leakage at an early stage. Observational studies have shown that if a leakage occurs, glycerol concentration in the microdialysate will rise significant after few hours, and changes in lactic acid and pyruvate values will change as a sign of inflammation. The investigators want to conduct a randomized study comparing patients undergoing pancreaticoduodenectomy and using microdialysis in half of the included population.

METabolomic and Immune PROfiling in the Development of Pancreatic Fistulas After cepHalic duodEnopancreatectomy

Pancreatoduodenectomy is the standard surgical operation for benign or malign pancreatic lesions. Pancreatic Fistula (PF) or Postpancreatectomy Acute Pancreatitis (PPAP) are the major complications associated with that type of surgery. We need to develop preventive measures for these complications, which requires a better understanding of their physiopathology. The aim of this prospective monocentric and observational study is to identify predictive biomarkers and/or risk factors for PF or PPAP using metabolomics. The Profiling of circulating metabolites is indeed an original and promising approach for this purpose. We will also investigate the patient's immune status and its association with the occurrence of post-surgical complications. Participants will be adult patients scheduled to undergo elective pancreaticoduodenectomy. Surgery and patient's management will be as usual. During surgery, a fragment (0.1-0.2 g) of non-tumoral pancreatic tissue will be removed and frozen at -80°C for metabolomic analysis. For immunological assessment, 4 blood samples will be collected (before surgery and then 7 days, 1 and 3 months after, blood sampling).

Indocyanine Green Fluorescence in Evaluation of Pancreatic Remnant Perfusion.

Main goal of this study is to evaluate the blood flow in a post resection pancreatic remnant after pancreaticoduodenectomy with use of indocyanine green fluorescence. If the hypothesis will be proven, evaluation of perfusion of the pancreatic remnant with indocyanine green could be used to estimate the increased risk of the development of pancreatic fistula.

Comparison of Effectiveness of TissuePatchTM in Preventing Postoperative Pancreatic Fistula

Postoperative pancreatic fistula is one of the most serious complications after gastric cancer surgery and can lead to surgery-related death. Postoperative pancreatic fistula for gastric cancer often occurs in accidental injury of pancreas during peripancreatic lymph node dissection, blunt separation of pancreatic capsule injury, laparoscopic instrument clamp and long-term compression of pancreas, etc. TissePatchTM is a synthetic, self-adhesive, absorbable surgical sealant and barrier used to seal and reinforce wounds and prevent leakage of air, blood, and fluid during neurosurgery, spine, chest, and soft tissue surgery. Therefore, we proposed whether the use of TissuePatchTM can reduce the occurrence of pancreatic fistula after gastric cancer surgery, and the clinical trial of the effectiveness of TissuePatchTM on the prevention of pancreatic fistula after radical gastrectomy of gastric cancer can provide new clinical data for the prevention of pancreatic fistula after gastric cancer surgery, and help reduce a series of adverse reactions caused by pancreatic fistula in patients.

Peritoneal Lavage on the Incidence of Pancreatic Fistula and Related Complications After Pancreatoduodenectomy

As one of the possible strategies to prevent pancreatic fistula, peritoneal lavage is still widely used in clinical practice, but it lacks more evidence of evidence-based medicine and recommendations of guidelines. Some clinicians believe that routine flushing after pancreatoduodenectomy wastes medical resources and has a negative impact on patients' comfort. In this study, the investigators designed a multicenter prospective controlled trial to compare the effects of peritoneal lavage and natural drainage on the incidence of pancreatic fistula and related complications after pancreatoduodenectomy. To study the indications of peritoneal lavage.

A Multicenter Randomized Controlled Study of External Pancreatic Duct Stents in Pancreaticoduodenectomy

The prognostic value of external vs internal pancreatic duct stents after pancreaticoduodenectomy remains controversial. This study aimed to evaluate the benefits of external and internal stents using the Updated Alternative Fistula Risk Score in both high-risk and low-risk patients with regard to the incidence of clinically relevant postoperative pancreatic fistula.

Preoperative Endoscopic Pancreatic Stent for Distal Pancreatectomy

Distal pancreatectomy (DP) with or without splenectomy is commonly indicated for pancreatic body or tail lesions. Postoperative pancreatic fistula (POPF) remains the commonest complication after DP. A pre-operatively placed pancreatic stent across papilla can decrease the pressure gradient between pancreatic duct and duodenum. Therefore, the pancreatic juice flow is redirected from the pancreatic transection plane and leakage from pancreatic stump is much reduced. This study aims to evaluate whether pre-operatively placed pancreatic stent can prevent POPF by a randomized controlled trial.

Prognostic Factors in Periampullary Tumors and Cysts

The project aims at analysing prognostic and predictive factors involved in diagnostics and surgical treatment of cysts and tumors in the pancreas and periampullary region using both clinical data and blood and tissue samples for biomarker development and validation.

HYPAR Trial - Hydrocortisone vs. Pasireotide in Reducing Pancreatic Surgery Complications

Pancreatic resections carry a high risk for complications, especially pancreatic fistula. Both hydrocortisone and pasireotide have been shown to be effective in reducing complications in earlier RCTs. The aim of this study is to compare the effectiveness and safety of these two drugs in preventing complications of pancreatic surgery.