The goal of this single-arm intervention trial is to determine the feasibility of implementing endoscopic ultrasound-guided pancreatic cyst chemoablation (EUS-PCA) using gemcitabine and paclitaxel for intraductal papillary mucinous neoplasms (IPMN) in two New Zealand tertiary interventional endoscopy centres.
Early detection and treatment of pancreatic premalignant lesions, most commonly IPMN, may be the best current strategy to prevent invasive pancreatic cancer. The rates of IPMN progression to invasive cancer range from 7 to 25% at 10 years, depending on risk characteristics. The feasibility and safety of EUS-PCA has been demonstrated in studies, including smaller randomised trials, totaling about 140 participants. EUS-PCA with the chemotherapy drugs being used in this trial has been implemented in several major international centres due to its potential for the minimally-invasive prevention of invasive pancreatic cancer, though it has never been compared to surgery in a clinical trial. This single-arm intervention trial will evaluate the feasibility of implementing endoscopic ultrasound-guided pancreatic cyst ablation (EUS-PCA) for IPMN in interventional endoscopy units in two New Zealand tertiary centres. Doing so in a clinical trial is consistent with the recommendation of an international expert panel to implement EUS-PCA in the context of a research trial. A previous US trial reported a complete response rate at 12 months of 59%, with response maintained or further improved at 3 years. Of those with complete response, \>95% of patients had not relapsed a median of 6 years after EUS-PCA. About 8% of patients in this trial underwent surgery for persistent cysts. The trial will recruit patients with concerning IPMN features, for whom a multidisciplinary meeting recommends EUS-PCA as a treatment option. This patient group would usually be recommended to have surgery, but many patients decline surgery due to its high morbidity and significant mortality rates or are not candidates for this due to comorbidities or other issues. If EUS-PCA is successful, then it may ablate these precancerous lesions, treat patients who are not fit for surgery and reduce the incidence of invasive pancreatic adenocarcinoma. This is likely to reduce inequity for Māori, who are at higher risk of being ineligible for surgery for these lesions. While this is a small trial, we will also aim to recruit 50% Māori to further address inequity of opportunity and health outcomes.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
20
EUS-PCA using gemcitabine and paclitaxel
Te Whatu Ora Waitematā
Auckland, New Zealand
Te Whatu Ora Waikato
Hamilton, New Zealand
The proportion of patients in whom EUS-PCA was completed as planned.
The proportion of patients in whom the cyst was aspirated and injected with the chemotherapy solution as intended, determined by the interventional endoscopist.
Time frame: 2 years
The IPMN complete response rate in the injected lesion(s) on imaging 3 months post-EUS-PCA.
The proportion with a complete response (CR) in the injected lesion on imaging 3 months after EUS-PCA a) in all recruited patients, and b) in those in whom EUS-PCA was successfully completed. * The proportion with CR at 3 months in Māori and non-Māori. * The safety of EUS-PCA in the first 30 days post-procedure. * The additional resource use required for this procedure compared to EUS and cyst aspiration alone. * Cyst characteristics according to radiological features and amylase, CEA, viscosity, and cytology from cyst fluid.
Time frame: 2 years
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