Clinical trial NCT02646514: Efficacy and Safety of Endobiliary Radiofrequency Ablation by Using a Novel RF Catheter (ELRA®) on Maintaining the Patency of Endobiliary Metal Drainage in Patients With Malignant Biliary Strictures : A Double-arm Comparable Study
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Cholangiocarcinoma, Gallbladder Cancer, Pancreatic Cancer
Keywords: Cholangiocarcinoma, radiofrequency ablation, metal stent
Lead sponsor: Yonsei University
Sponsor class: OTHER
First posted: 2016-01-05
Enrollment: 48
Sex: ALL
Minimum age (years): 19
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Malignant obstructive jaundice is a common complication of advanced stage cholangiocarcinoma, gallbladder cancer, and pancreatic cancer. In biliary stricture by malignancy, biliary drainage with placement of self-expanding metal stent (SEMS) for palliation is the therapy of choice in these patients. When compared to plastic stents, SEMS present a significantly decreased risk of recurrent biliary obstruction. SEMS are also more cost-effective than plastic stents in patients with a life expectancy of longer than 4 months. However, despite their numerous benefits, SEMS become occluded in up to 50 % of patients in the first 6-8 months.

Radiofrequency ablation (RFA) has been used to treat malignancies of the liver since the early 1990s. Other studies have investigated its role in diseases of the colon and esophagus. More recently, this technique has been recognized for its potential in palliative treatment of malignant biliary strictures. RFA uses a high-frequency alternating current to generate heat and achieve coagulative necrosis when in contact with tissue. Within the bile duct, RFA appears to be safe and may result in decreased benign epithelial hyperplasia and tumor ingrowth. However, RFA along with placement of SEMS has not been well studied. On the other hand, newly developed RFA catheter (ELRA®) showed the feasibility and safety in south korea, recently.

The purpose of this study was to investigate the Efficacy and safety of endobiliary RFA by using a novel RF catheter (ELRA®) on maintaining the patency of endobiliary metal drainage in patients with malignant biliary strictures.


Eligibility criteria: Inclusion Criteria:

* Pathologically confirmed malignant biliary obstruction or clinically defined malignant biliary obstruction
* older than 19 years old
* Life expectancy \> 3 months
* Inoperable case due to advanced stage or comorbidity
* Informed consent

Exclusion Criteria:

* Inadequate case for ERCP
* Inadequate coagulation (platelet count \< 60,000/µl, PT(INR)\>1.5)
* Abnormal biliary tract system due to previous operation
* Failed endoscopic approach to duodenum or biliary tract
* Pregnancy
* No signed informed consent

Primary outcomes:
measure: Patency of metal stent
timeFrame: 12 months
Secondary outcomes:
measure: Overall Survival
timeFrame: 12 months
measure: Complication rate
timeFrame: 12 months
Other outcomes:
Locations:
city: Seoul
country: Korea, Republic of
facility: Severance Hospital, Yonsei University
Study officials:
References:
citation: Sharaiha RZ, Natov N, Glockenberg KS, Widmer J, Gaidhane M, Kahaleh M. Comparison of metal stenting with radiofrequency ablation versus stenting alone for treating malignant biliary strictures: is there an added benefit? Dig Dis Sci. 2014 Dec;59(12):3099-102. doi: 10.1007/s10620-014-3264-6. Epub 2014 Jul 18.
citation: Ortner ME, Caca K, Berr F, Liebetruth J, Mansmann U, Huster D, Voderholzer W, Schachschal G, Mossner J, Lochs H. Successful photodynamic therapy for nonresectable cholangiocarcinoma: a randomized prospective study. Gastroenterology. 2003 Nov;125(5):1355-63. doi: 10.1016/j.gastro.2003.07.015.
citation: Kang H, Chung MJ, Cho IR, Jo JH, Lee HS, Park JY, Park SW, Song SY, Bang S. Efficacy and safety of palliative endobiliary radiofrequency ablation using a novel temperature-controlled catheter for malignant biliary stricture: a single-center prospective randomized phase II TRIAL. Surg Endosc. 2021 Jan;35(1):63-73. doi: 10.1007/s00464-020-07689-z. Epub 2020 Jun 2.