Eus-guided Cryothermal Ablation in Stage III Pancreatic Adenocarcinoma
- Conditions
- Pancreas NeoplasmPancreatic AdenocarcinomaPancreatic Cancer
- Registration Number
- NCT03649035
- Lead Sponsor
- Istituto Clinico Humanitas
- Brief Summary
Pancreatic cancer represents the 11th most commonly diagnosed cancer in men and 9th in women, being the third leading cause of cancer-related death in the Western countries. Pancreatic cancer has a very poor prognosis and median overall survival is less than 5 months in population-based studies. Approximately 80% of patients with pancreatic cancer present with unresectable disease, which is either due to locally advanced or metastatic disease. About 40% of patients have metastases at the time of diagnosis and in another 30 to 40 % of the patients tumour resection is not feasible because of vascular invasion, or poor general conditions. In resectable patients surgical resection with negative margins (R0) continues to be worldwide considered the only chance to cure, however, this standard treatment is usually reserved to a small number of patients. In patients with locally advanced tumour, neoadjuvant treatment has been proposed in various modalities as a way to decrease size and downstage the tumour leading to a resectable disease. Several phase I - II studies have shown the capability of chemotherapy alone or chemo radiotherapy based regimens to increase the resection rates of these patients and the related median overall survival.
Systemic chemotherapy followed by chemoRT or stereotattic body radiation therapy (SBRT) is an option for selected patients with unresectable disease and good PS who have not developed metastatic disease.
This sequence is especially recommended in cases in which it is highly unlikely that the patient will become resectable (ie, complete encasement of SMA/superior celiac artery). Due to the significant rate of toxicity of the radio therapy (RT) treatment alone or in adjunct to chemotherapy, other local treatments with the goal to downstage the primary tumour with less or no toxicity as compared to RT have been proposed.
Radiofrequency (RF) has been used with success in solid cancers like the hepatocellular carcinoma while cryoablation has been used for breast and renal cancers. RFA has been applied in few clinical trials in human pancreatic cancer either without any imaging guidance or just under intra-operatory ultrasound control during palliative open surgery.
The HybridTherm probe (HTP), (ERBE Elektromedizin GmbH, Tübingen, Germany) combines bipolar RF-ablation with cryogenic induced cooling. A bipolar radiofrequency system creates ablation with less collateral thermal damage than standard monopolar systems but with the trade-off to lose overall efficiency.
In a recent in-vivo study the feasibility of the HTP in patients with unresectable locally advanced pancreatic adenocarcinoma has been shown. HTP has been applied under EUS-guidance to patients who have been already treated by chemotherapy (two lines) and in many cases with the adjunct of RT.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- WITHDRAWN
- Sex
- All
- Target Recruitment
- Not specified
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Primary Outcome Measures
Name Time Method Number of participants with feasible EUS-guided Cryothermal Ablation The day of procedure The procedure will be defined as "feasible" if the placement of the probe inside the tumor will be successful and "not feasible" if it will not be possible to place the probe inside the lesion because of difficulties such as hardness of the tumor, stiffness of the GI wall, or interposition of vessels
- Secondary Outcome Measures
Name Time Method Number of participants with treatment-related adverse events 30 days after the procedure Complications will be recorded and laboratory and radiologic follow-up will be performed to detect them.
Progression-free survival 6 months after the procedure To demonstrate the efficacy of the HybridTherm probe in the control of the tumour progression in terms of progression-free survival, measured at 6-month after therapy onset (PFS-6) by MRI. PFS-6 takes in consideration the tumour growth in relation to the volume/size evaluated as a difference between the previous and the current examination.
In practice, it is the time interval between the enrolment of the patient and the first radiological evidence of tumor progression.
Trial Locations
- Locations (1)
Istituto Clinico Humanitas
🇮🇹Rozzano, Milano, Italy