ClinicalTrials.gg
Not yet recruitingNCT07781722TacroProphUpdated Aug 24, 2026

Tacrolimus as Prophylaxis of Post-ERCP Pancreatitis

A Phase 4 interventional study of Tacrolimus and NaCl (placebo) in Post-ERCP Pancreatitis, sponsored by Amsterdam UMC, location VUmc. Not yet recruiting at 1 site in Netherlands. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-24.

Sponsored by Amsterdam UMC, location VUmc · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
520
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn if a single intravenous dose of tacrolimus, given before an ERCP procedure (an endoscopic procedure of the bile ducts and pancreas), can prevent post-ERCP pancreatitis (PEP) in adults at moderate-to-high risk of developing this complication.

The main question it aims to answer is:

  • Does a single dose of tacrolimus lower the number of participants who develop pancreatitis after ERCP?

Researchers will compare tacrolimus to a placebo (a look-alike solution with no active drug) to see if tacrolimus reduces the occurrence of PEP.

Participants will:

  • Receive an intravenous infusion of either tacrolimus or placebo, given over 60 minutes, ending before the start of the ERCP procedure
  • Receive standard preventive treatment (a rectal anti-inflammatory medication (NSAID)) in addition to the study infusion
  • Be contacted by phone 48 hours after the procedure to check for symptoms
  • Complete questionnaires about quality of life and healthcare use, and be followed for 12 weeks after the procedure
  • The first 40 enrolled patients will have extra blood samples taken to measure tacrolimus levels.
02

Conditions studied

  • Post-ERCP Pancreatitis

Browse trials for

Keywords

  • Post-ERCP pancreatitis
  • Tacrolimus
  • Endoscopic retrograde cholangiopancreatography
  • Prophylaxis
  • ERCP
03

In context

Pancreatitis

557 studies on the registry are indexed under Pancreatitis; 164 are open to participants now.

This study's planned enrollment of 520 is above the median of 100 across 349 interventional studies indexed under Pancreatitis.

Browse Pancreatitis studies →

Lead sponsor

Amsterdam UMC, location VUmc is the lead sponsor of 305 studies on the registry; 84 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age 18 years or older
  • Indication for ERCP
  • Ability to provide written

Exclusion criteria

Exclusion Criteria:

  • Previous sphincterotomy or sphincteroplasty
  • Routine biliary stent exchange
  • Altered anatomy or biliodigestive anastomosis
  • Chronic pancreatitis according to the M-ANNHEIM criteria
  • Active pancreatitis
  • Sepsis or
  • for tacrolimus or diclofenac (allergy, potassium >5 mmol/L, \<30 mL/min)
  • Pregnancy or breastfeeding
  • Current tacrolimus or ciclosporin use
  • Current use of medications contraindicated with tacrolimus, including strong /3A5 inhibitors (e.g., ketoconazole, voriconazole, posaconazole, itraconazole, clarithromycin, josamycin, ritonavir, cobicistat) or CYP3A4/3A5 inducers (e.g., rifampicin, carbamazepine, phenytoin, St. John's wort)
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
520 participants (estimated)

Study arms

  • Experimental
    Tacrolimus

    Participants receive a single intravenous dose of tacrolimus, completed before the start of ERCP. All participants also receive standard prophylactic care with rectal diclofenac 100 mg.

    Drug: Tacrolimus

  • Placebo comparator
    Placebo

    Participants receive a matching intravenous placebo, identical in appearance and administration to the tacrolimus arm. All participants also receive standard prophylactic care with rectal diclofenac 100 mg.

    Other: NaCl (placebo)

Interventions

  • A single intravenous dose of tacrolimus, completed before the start of ERCP.

  • OtherNaCl (placebo)

    A matching intravenous placebo, identical in appearance and administration to the tacrolimus infusion.

06

What researchers measure

Primary outcomes

  1. Post-ERCP Pancreatitis (PEP)

    Occurrence of post-ERCP pancreatitis within 48 hours after ERCP, defined according to the revised Atlanta criteria: ≥2 of the following: (a) characteristic abdominal pain; (b) serum amylase or lipase \>3× upper limit of normal; (c) imaging findings consistent with pancreatitis.

    Time frame: 48 hours after ERCP

Secondary outcomes

  1. Incidence of Post-ERCP Pancreatitis within 30 days

    Time frame: Within 30 days after ERCP

  2. Severity of PEP

    Severity of Post-ERCP Pancreatitis± According to the revised Atlanta classification (mild, moderate, severe)

    Time frame: Up to 30 days after ERCP

  3. ERCP-related complications

    Incidence of ERCP-related complications other than PEP

    Time frame: Up to 30 days after ERCP

  4. Incidence of Adverse Events (AEs), Serious Adverse Events (SAEs), and Adverse Reactions

    Time frame: Up to 30 days after ERCP

  5. Hospital/ICU stay

    Length of hospital and ICU stay

    Time frame: Up to 12 weeks

  6. Change in quality of life as measured by EQ-5D-5L

    Time frame: Baseline, 48 hours, and 12 weeks after ERCP

  7. Healthcare costs

    Healthcare consumption and societal costs

    Time frame: Up to 12 weeks after ERCP

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Sep 2026; primary completion for Sep 2028, 24 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 19, 2026
First posted
Aug 24, 2026
StartEst.
Sep 7, 2026
Primary completionEst.
Sep 7, 2028
CompletionEst.
Dec 7, 2028
Last update
Aug 24, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07781722
Responsible party
Mattheus Wielenga (MD PhD, Amsterdam UMC, location VUmc) — Principal investigator
First posted
Aug 24, 2026
Start date
Sep 7, 2026 (estimated)
Primary completion
Sep 7, 2028 (estimated)
Completion
Dec 7, 2028 (estimated)
Last update
Aug 24, 2026

Study contacts

Malin Witteman, MD
Contact
m.witteman1@amsterdamumc.nl
+31 88 3207054

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Tacrolimus

Start the discussion