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Evaluating Predictors & Interventions in Sphincter of Oddi Dysfunction (EPISOD)

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ClinicalTrials.gov Identifier: NCT00688662
Recruitment Status : Active, not recruiting
First Posted : June 3, 2008
Results First Posted : July 28, 2016
Last Update Posted : July 28, 2016
Information provided by (Responsible Party):

May 30, 2008
June 3, 2008
April 13, 2015
July 28, 2016
July 28, 2016
July 2008
December 2013   (Final data collection date for primary outcome measure)
Percentage of Participants With Success [ Time Frame: 1 year ]
The primary outcome was a dichotomous (success/failure) variable. Success was defined as patients having a RAPID score of <6 days at months 9 and 12 post-procedure, without re-intervention and without use of prescription analgesics during months 10, 11 and 12 unless used for non-abdominal pain for no more than 14 days. The subject was considered a failure if the 12-month RAPID score was missing or collected outside the acceptable window. If the 9-month RAPID was missing, or outside of the window, then the 6-month value was used when available.
To ascertain whether subjects with SOD III respond to sphincterotomy, [ Time Frame: 5 years ]
Complete list of historical versions of study NCT00688662 on ClinicalTrials.gov Archive Site
Percentage of Patients With a Successful Primary Outcome, Out of Those With Abnormal Sphincter Manometry. [ Time Frame: 1 year ]
Successful outcome was defined using the primary outcome definition of success at 12 months post randomization. Abnormal sphincter manometry was determined as a basal pressure of more than 40mm Hg in both leads.
the association between the results of Sphincter of Oddi Manometry (SOM) (abnormal/normal) and the primary outcome (success/failure) [ Time Frame: 5 years ]
Not Provided
Not Provided
Evaluating Predictors & Interventions in Sphincter of Oddi Dysfunction
A Phase III Randomized Multicenter Clinical Trial of Sphincterotomy for the Treatment of SOD III Patients
The Evaluating Predictors & Interventions in Sphincter of Oddi Dysfunction(SOD) study (EPISOD) is a randomized sham-controlled study of biliary and pancreatic sphincterotomy as treatment for patients with pain after cholecystectomy fitting the criteria for sphincter of Oddi dysfunction type III.

Clinical Trial Phase: Phase III

Study Sites Seven clinical centers in US

Study Period Planned enrollment period - 3 years

Planned duration of the study - 5 years

Study Population SOD III Patients

Primary Study Objective: To ascertain whether subjects with SOD III respond to sphincterotomy,

Secondary Study Objectives

To evaluate:

  • the association between the results of Sphincter of Oddi Manometry (SOM) (abnormal/normal) and the primary outcome (success/failure);
  • the success rate (as defined in the primary) of subjects who receive biliary sphincterotomy alone versus subjects who receive both biliary and pancreatic sphincterotomy in the subgroup of patients with manometrically proven hypertension of the pancreatic sphincter;
  • the effects of pre-specified prognostic factors on the primary outcome;
  • anxiety and depression scores over time and their relation to study outcomes;
  • the economic impact of SOD III, and of endoscopic sphincterotomy in patients with SOD III; and, to,
  • conduct a careful follow-up study (EPISOD2) of standard of care treatment (separate protocol).

Study Design The EPISOD Trial is a parallel, randomized, double-blinded, sham-controlled, multicenter Phase III clinical trial of endoscopic sphincterotomy as treatment for adults 18 to 65 years of age diagnosed with SOD III.

Sample Size A minimum of 214 subjects will be randomized using a 2:1 allocation in favor of sphincterotomy and will be followed for 12 months post-randomization.

Phase 3
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Sphincter of Oddi Dysfunction
  • Procedure: ERCP with sphincterotomy
    cutting the biliary sphincter muscle (sphincterotomy)
  • Procedure: ERCP without sphincterotomy
    ERCP with sphincter manometry, but no sphincterotomy
  • Active Comparator: 1.ERCP with sphincterotomy
    ERCP with sphincterotomy: cutting the biliary sphincter muscle (sphincterotomy)
    Intervention: Procedure: ERCP with sphincterotomy
  • Placebo Comparator: 2.ERCP without sphincterotomy
    ERCP without cutting the biliary sphincter muscle (sphincterotomy)
    Intervention: Procedure: ERCP without sphincterotomy

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Active, not recruiting
December 2016
December 2013   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Patients diagnosed with the clinical syndrome of SOD, as defined by the Modified Functional Biliary Disorders Module of the Rome III criteria
  2. Pain burden of Grade 3 or higher on RAPID Questionnaire.
  3. Cholecystectomy more than 90 days before enrollment.
  4. Laboratory Tests: Results of blood tests taken within 1 week preceding the baseline visit and any others available from the preceding 6 months (post-cholecystectomy):Direct bilirubin, alkaline phosphatase, amylase and lipase results must be no greater than 2 X the upper level of normal.Transaminase levels can be no more than 3 X upper limit of normal. If the transaminases are elevated (<2X ULN) in association with a pain attack, they cannot have returned to normal within 3 days.
  5. Normal abdominal imaging by CT or MR/MRCP with bile duct reported at ≤9mm.
  6. Upper endoscopy examination without findings to explain the pain.
  7. Pain persisting despite a one trial of acid suppressant medications for one month (if tolerated).
  8. Pain persisting despite a trial of antispasmodics.
  9. Subjects on antidepressants for pain control (not required) should be taking them for a minimum of one month prior to the baseline assessment.

9.Patients with SOD with depressive and/or anxiety disorders who receive psychopharmacologic treatment must be on stable medication dose for at least 6 weeks.

10.Access to a telephone. 11.Must be able to speak, read, and write English. 12.Signed and dated informed consent.

Exclusion Criteria:

  1. Prior ERCP treatment.
  2. Age < 18 or Age > 65.
  3. Pregnancy: Women who are pregnant at the time of Screening* will be excluded from the study. (*Note: Women who become pregnant AFTER the Baseline Visit/ERCP will be allowed to remain in the study for telephone follow-up visits).
  4. Prior gastric resection or surgery involving biliary diversion.
  5. Prior diagnosis of acute pancreatitis (lipase >3 x ULN) including post-ERCP pancreatitis, or of chronic pancreatitis by radiological imaging, EUS 5 or more criteria, or Cambridge criteria moderate or more on ERCP.
  6. Daily use of prescription analgesics over the previous month.
  7. Abdominal discomfort every day for the past month at level of 3 or more on a scale of 1-10.
  8. Presence of significant psychiatric disorders:

    1. Lifetime psychotic disorders, bipolar disorder;
    2. Substance use disorders within 6 months;
    3. Eating disorders within 2 years
    4. Moderate & severe depression defined by BDI-II (Beck Depression Inventory) cutoff scores >22 (unless receiving stable psychiatric therapy for six weeks); and/or,
    5. Suicidal risk (equal to or greater than "low") using MINI suicide section or a score of greater than 0 on question 9 of the BDI.
  9. The total number of days in the previous 3 months that the subject has taken prescription analgesics due to episodes of abdominal pain is greater than the total number of days the subject had episodes of abdominal pain.
  10. Any condition that, in the investigator's opinion, makes the subject unsuitable for study participation.

ERCP Criteria:

  1. Pancreas divisum (complete or partial) (known or discovered at study ERCP).
  2. Any pathology found at ERCP (except sphincter hypertension).
  3. Failed pancreatic manometry.
Sexes Eligible for Study: All
18 Years to 65 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
United States
Not Provided
Not Provided
Peter Cotton, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Not Provided
Principal Investigator: Joseph Romagnuolo, MD Medical Universtiy of South Carolina
Principal Investigator: Martin Freeman, MD University of Minnesota - Clinical and Translational Science Institute
Principal Investigator: Richard Kozarek, MD Virginia Mason Medical Center
Principal Investigator: Evan Fogel, MD Indiana University
Study Chair: Peter Cotton, MD MUSC Digestive Disease Center
Principal Investigator: Paul Tarnasky, MD Digestive Health Associates of Texas
Principal Investigator: Giuseppe Aliperti, MD Midwest Therapeutic Endoscopy Consultants
Principal Investigator: Priya Jamidar, MD Yale University
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
June 2016

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP