Endoscopic Ultrasound Guided Radiofrequency Ablation (EUS-RFA) for Small Benign Pancreatic Tumors

Study Overview
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Brief Summary
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Incidental pancreatic solid or cystic lesions are diagnosed with increased frequency due to the widespread use of abdominal cross-sectional imaging to investigate unrelated symptoms. Lesions such as neuroendocrine tumors (NET), mucinous cystadenomas and intraductal papillary mucinous neoplasms (IPMNs) have the potential of malignant transformation. The standard treatment of solid or cystic pancreatic lesions with malignant potential has been surgical resection, with lesions in the pancreatic head requiring a Whipple resection whereas pancreatic tail lesions are treated with distal pancreatectomy. Both types of resection carry significant morbidity and mortality. The study would like to outline the feasibility, safety, adverse events and early results of endoscopic ultrasound (EUS) - radiofrequency ablation (RFA) in pancreatic neoplasms.

Detailed Description
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The intervention described was radiofrequency ablation which was applied with an innovative monopolar radiofrequency probe (1.2 mm Habib EUS-RFA catheter) placed through a 19 or 22 gauge fine needle aspiration (FNA) needle once FNA was performed in patients with a tumor in the head of the pancreas. The device had been certificated by the European Union (EU) and received Food and Drug Administration (FDA) approval in 2015. The endoscopic ultrasound (EUS) - radiofrequency ablation (RFA) is a 1 Fr wire with a working length of 190 cm, which can be inserted through the biopsy channel of a EUS. RF power is applied to the electrode at the end of the wire to coagulate tissue in the liver and pancreas. In this study, the investigators will enroll 20 patients to receiving EUS-RFA of pancreatic neoplasms with the monopolar RF probe. The follow-up period will be one year with regular monitoring. Our primary endpoint will be to evaluate pancreatic tumor ablation effect, Secondary objectives will be to evaluate the mortality and morbidity.

Official Title
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A Prospective Clinical Study of Endoscopic Ultrasound Guided Radiofrequency Ablation (EUS-RFA) for Small Benign Pancreatic Tumors

Conditions
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Neuroendocrine Tumors, Cystic Neoplasms

Intervention / Treatment
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* Device: endoscopic ultrasound - radiofrequency ablation (EUS-RFA)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients must meet all of the following inclusion criteria to be eligible for this study: Cystic neoplasms in pancreatic parenchyma or outer portion of the pancreas are defined by radiologists who evaluate the images more than twice in three months. The size of benign cystic neoplasm is between 0.5-3 cm. Or surgical specialist physician considers the benign tumor that larger than 3 cm is not suitable for surgery or patients unwilling to accept surgery. Normal physical condition. Eastern Cooperative Oncology Group (ECOG) score of 0-2 and American Society of Anaesthesiologists (ASA) score ≤ 3. Normal blood coagulation. Platelet count ≥ 100 K/Μl. Prothrombin time (PT)- international normalized ratio (INR) ≦ 1.5. Prior Informed Consent Form. Life expectancy of at least 3 months. Exclusion Criteria: Patients presenting with any of the following will not be enrolled into this study: Women who are pregnant or women of child-bearing potential who are not using an acceptable method of contraception. To participate in any related tumor therapy clinical trials within thirty days prior to surgery. Any active metal implanted device (eg Pacemaker) Patients who have other malignancies and have not been cured within five years. Patients with resectable pancreatic cancer. Simple pancreatic cysts (including pseudocysts) or serous cystadenoma. Cystic part of the tumor is close to blood vessels or bile duct (<0.5 cm) that might injury the related structure. Cystic pancreatic tumors originate from or associate the pancreatic ducts. Have acute pancreatitis in the past four weeks Known history of human immunodeficiency virus (HIV) infection Have cardiovascular diseases (such as acute myocardial infarction, or stroke) within the last three months Moderate to severe renal dysfunction (Estimated Glomerular Filtration Rate (eGFR) <60) Have any serious or poor control of systemic disease that are not suitable for this test and followup

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: EUS-RFA<br>monopolar radiofrequency probe (1.2 mm Habib endoscopic ultrasound - radiofrequency ablation (EUS-RFA) catheter) and 19 or 22 gauge fine needle aspiration (FNA) needle | Device: endoscopic ultrasound - radiofrequency ablation (EUS-RFA)<br>* Radiofrequency ablation will be applied with an innovative monopolar radiofrequency probe (1.2 mm Habib EUS-RFA catheter) placed through a 19 or 22 gauge fine needle aspiration (FNA) needle in patients with a tumor in the head of the pancreas.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To evaluate pancreatic tumor ablation effect | Using magnetic resonance cholangiopancreatography (MRCP) and/or abdominal computed tomography (CT) | up to one year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Symptom and adverse event monitoring | monitor any side effects | up to one year | 
| Physical examination | Complete an Eastern Cooperative Oncology Group (ECOG) evaluation | up to one year | 
| Blood Routine (CBC) | measure of the concentration of white blood cells, red blood cells, and platelets in the blood. | up to one year | 
| Biochemical profile | including CEA/CA19-9, amylase, glucose | up to one year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Endoscopic ultrasound, Radiofrequency ablation, Pancreas