RCT on Robotic vs. Endo-laparoscopic Approach for Difficult Choledocholithiasis
Randomized Trial Comparing One-stage Robotic Approach Versus Two-stage Endo-laparoscopic Approach for Difficult Choledocholithiasis (REAL Trial)
1 other identifier
interventional
90
1 country
1
Brief Summary
Gallstone disease is a very common disease identity in the world. Migration of stones from gallbladder to common bile duct (CBD), causing CBD stones (choledocholithiasis), occurs in up to 22% of cases. Traditionally, choledocholithiasis can be managed by therapeutic endoscopic retrograde cholangiopancreatography (ERCP) with interval cholecystectomy in 85% of patients. In around 15% of the patients, the clearance of choledocholithiasis cannot be effectively achieved with standard ERCP (difficult choledocholithiasis). As recommended by European Society of Gastrointestinal Endoscopy guideline, difficult choledocholithiasis can be managed by either endoscopic or surgical approaches. Clinical evidences by meta-analyses comparing endoscopic with surgical approaches are conflicting. Considering the timing of cholecystectomy to eliminate the pathological source of CBD stone, one-stage laparoscopic CBD exploration LCBDE plus laparoscopic cholecystectomy LC is an attractive approach. Although one-stage laparoscopic approach is associated with higher stone clearance rate (up to 96%) than traditional two-stage endo-laparoscopic approach (preoperative ERCP and LC), postoperative complication rate is substantial (up to 17%). Among those complications, postoperative bile leak is likely related to laparoscopic instrumental limitations in LCBDE. With advancement of da Vinci robotic system, there are 3-dimensional dual cameras providing high-quality intraoperative view and 7-degree of freedom of robotic instruments. The system is able to cope with complex hepatobiliary surgical procedure, including robotic CBD exploration (RCBDE). Theoretically, postoperative bile leak following RCBDE is lower than that of LCBDE. Hence, one-stage RCBDE plus robotic cholecystectomy RC could become a new standard of treatment for difficult choledocholithiasis. Up till now, only case series have reported the safety and efficacy of RCBDE. There is, however, no prospective randomized trial comparing one-stage RCBDE and RC with traditional two-stage endo-laparoscopic approach (preoperative ERCP and interval LC) for difficult choledocholithiasis, in terms of stone clearance rate and procedure-related complications. The investigators thus propose a single-center randomized trial on this issue. 90 patients (45 patients in each arm) with difficult choledocholithiasis will be randomized to definitive treatment by either one-stage robotic approach or two-stage endo-laparoscopic approach. The primary outcome is the stone clearance rate. The secondary outcomes include treatment related morbidity, hospital mortality, and hospital stay. This will be the first randomized trial in the world evaluating the efficacy of the novel one-stage robotic approach for difficult choledocholithiasis, and it will certainly add level 1 evidence to change the management algorithm for choledochothiliasis.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started May 2023
Typical duration for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
October 30, 2022
CompletedFirst Posted
Study publicly available on registry
November 10, 2022
CompletedStudy Start
First participant enrolled
May 1, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2025
CompletedAugust 31, 2023
August 1, 2023
2.7 years
October 30, 2022
August 30, 2023
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Common bile duct stone clearance rate
The rate of retained common bile duct stone after intervention as assessed by ERCP at 6 weeks
up to 6 weeks
Secondary Outcomes (5)
Hospital mortality
Up to 4 weeks
Hospital stay
Up to 4 weeks
Bile leakage rate after surgery
Up to 4 weeks
Complication rate as assessed by Clavien-Dindo classification
Up to 4 weeks
Hospital cost
Up to 4 weeks
Study Arms (2)
Robotic group
EXPERIMENTALOne-stage robotic common bile duct exploration and cholecystectomy
Endo-laparoscopic group
ACTIVE COMPARATORTwo stage therapeutic endoscopic retrograde cholangiopancreatography (ERCP) with interval laparoscopic cholecystectomy
Interventions
one-stage robotic common bile duct exploration and cholecystectomy
Two-stage therapeutic ERCP plus interval laparoscopic cholecystectomy
Eligibility Criteria
You may qualify if:
- Definitions of difficult CBD stone: stone size \> 1.5cm, and/or multiple stones \> 3, and/or narrow and angled distal common bile duct (CBD) (\< 1350)
- Diagnostic ERCP with successful CBD deep cannulation and temporarily CBD stenting
- No history of cholecystectomy
- General condition fit for GA
You may not qualify if:
- History of recurrent pyogenic cholangitis
- Failed endoscopic biliary stenting by initial ERCP
- Complications of ERCP (severe necrotizing pancreatitis, papillotomy bleeding or bowel perforation)
- Previous upper abdominal surgery, including gastrectomy
- General condition unfit for GA
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Chinese University of Hong Kong
Hong Kong, Hong Kong
Related Publications (11)
Abou-Saif A, Al-Kawas FH. Complications of gallstone disease: Mirizzi syndrome, cholecystocholedochal fistula, and gallstone ileus. Am J Gastroenterol. 2002 Feb;97(2):249-54. doi: 10.1111/j.1572-0241.2002.05451.x.
PMID: 11866258BACKGROUNDWilliams E, Beckingham I, El Sayed G, Gurusamy K, Sturgess R, Webster G, Young T. Updated guideline on the management of common bile duct stones (CBDS). Gut. 2017 May;66(5):765-782. doi: 10.1136/gutjnl-2016-312317. Epub 2017 Jan 25.
PMID: 28122906BACKGROUNDOdemis B, Kuzu UB, Oztas E, Saygili F, Suna N, Coskun O, Aksoy A, Sirtas Z, Ari D, Akpinar Y. Endoscopic Management of the Difficult Bile Duct Stones: A Single Tertiary Center Experience. Gastroenterol Res Pract. 2016;2016:8749583. doi: 10.1155/2016/8749583. Epub 2016 Nov 24.
PMID: 27999591BACKGROUNDManes G, Paspatis G, Aabakken L, Anderloni A, Arvanitakis M, Ah-Soune P, Barthet M, Domagk D, Dumonceau JM, Gigot JF, Hritz I, Karamanolis G, Laghi A, Mariani A, Paraskeva K, Pohl J, Ponchon T, Swahn F, Ter Steege RWF, Tringali A, Vezakis A, Williams EJ, van Hooft JE. Endoscopic management of common bile duct stones: European Society of Gastrointestinal Endoscopy (ESGE) guideline. Endoscopy. 2019 May;51(5):472-491. doi: 10.1055/a-0862-0346. Epub 2019 Apr 3.
PMID: 30943551BACKGROUNDDasari BV, Tan CJ, Gurusamy KS, Martin DJ, Kirk G, McKie L, Diamond T, Taylor MA. Surgical versus endoscopic treatment of bile duct stones. Cochrane Database Syst Rev. 2013 Dec 12;2013(12):CD003327. doi: 10.1002/14651858.CD003327.pub4.
PMID: 24338858BACKGROUNDJi WB, Zhao ZM, Dong JH, Wang HG, Lu F, Lu HW. One-stage robotic-assisted laparoscopic cholecystectomy and common bile duct exploration with primary closure in 5 patients. Surg Laparosc Endosc Percutan Tech. 2011 Apr;21(2):123-6. doi: 10.1097/SLE.0b013e31820ad553.
PMID: 21471807BACKGROUNDAlkhamesi NA, Davies WT, Pinto RF, Schlachta CM. Robot-assisted common bile duct exploration as an option for complex choledocholithiasis. Surg Endosc. 2013 Jan;27(1):263-6. doi: 10.1007/s00464-012-2431-0. Epub 2012 Jul 7.
PMID: 22773235BACKGROUNDSzold A, Bergamaschi R, Broeders I, Dankelman J, Forgione A, Lango T, Melzer A, Mintz Y, Morales-Conde S, Rhodes M, Satava R, Tang CN, Vilallonga R; European Association of Endoscopic Surgeons. European Association of Endoscopic Surgeons (EAES) consensus statement on the use of robotics in general surgery. Surg Endosc. 2015 Feb;29(2):253-88. doi: 10.1007/s00464-014-3916-9. Epub 2014 Nov 8.
PMID: 25380708BACKGROUNDDindo D, Demartines N, Clavien PA. Classification of surgical complications: a new proposal with evaluation in a cohort of 6336 patients and results of a survey. Ann Surg. 2004 Aug;240(2):205-13. doi: 10.1097/01.sla.0000133083.54934.ae.
PMID: 15273542BACKGROUNDCuschieri A, Lezoche E, Morino M, Croce E, Lacy A, Toouli J, Faggioni A, Ribeiro VM, Jakimowicz J, Visa J, Hanna GB. E.A.E.S. multicenter prospective randomized trial comparing two-stage vs single-stage management of patients with gallstone disease and ductal calculi. Surg Endosc. 1999 Oct;13(10):952-7. doi: 10.1007/s004649901145.
PMID: 10526025BACKGROUNDDonner A. Approaches to sample size estimation in the design of clinical trials--a review. Stat Med. 1984 Jul-Sep;3(3):199-214. doi: 10.1002/sim.4780030302.
PMID: 6385187BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Kelvin Ng, PhD
Chinese University of Hong Kong
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor
Study Record Dates
First Submitted
October 30, 2022
First Posted
November 10, 2022
Study Start
May 1, 2023
Primary Completion
December 31, 2025
Study Completion
December 31, 2025
Last Updated
August 31, 2023
Record last verified: 2023-08
Data Sharing
- IPD Sharing
- Will not share