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SuspendedNCT04985981Updated Dec 1, 2021

The Prediction of Anastomotic Insufficiency Risk After Colorectal Surgery (PANIC) Study

An observational study in Anastomotic Leak, Colorectal Cancer and Diverticulosis, sponsored by Michel Adamina, MD. Suspended at 2 sites in Switzerland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-12-01.

Sponsored by Michel Adamina, MD · Observational

Why this study was suspended
Change in core study organization
Study type
Observational
Model
Other
Time perspective
Other
Enrollment
11,000
Ages
18 Years and older
Sex
All
01

Study summary

The Prediction of Anastomotic Insufficiency risk after Colorectal surgery (PANIC) study aims to establish a machine-learning-based application that allows for accurate preoperative prediction of patients at risk for anastomotic insufficiency after colon and colorectal surgery.

Read the detailed description

Anastomotic insufficiency leads to clinical strains for patients, and significantly increases morbidity and mortality. On average, hospital stay is extended by 12 days while healthcare-related expenses are increased by 30,000 USD when patients suffer from an anastomotic leak. In experienced centers, the approximated incidence of anastomotic insufficiency is 3,3% for colon and 8.6% for colorectal procedures. Multiple subgroups of patients with increased risk for anastomotic leaks have been described in previous publications. Meticulous preoperative recognition of patients with increased risk for anastomotic insufficiency is clinically beneficial, as it would permit improved ressource preparation, enhanced patient education and superior surgical decision-making. However, it is often difficult for clinicians to balance the plethora of crucial risk factors for anastomotic leaks for a single patient. Machine learning methods have been exceptionally effective at incorporating various clinical variables into one unified risk prediction model. To the authors' best knowledge, there does not yet exist a credible prediction model or a conclusive prediction score for anastomotic insufficiency after colon and colorectal anastomosis. The aim of the Prediction of Anastomotic Insufficiency risk after Colorectal surgery (PANIC) study is to establish and externally validate an efficient machine-learning-based prediction tool based on multicenter data from a range of international centers.

02

Conditions studied

  • Anastomotic Leak
  • Colorectal Cancer
  • Diverticulosis
  • Crohn Disease
  • Ulcerative Colitis
  • Mesenteric Ischemia

Keywords

  • Anastomotic Leak
03

In context

Anastomotic Leak

240 studies on the registry are indexed under Anastomotic Leak; 72 are open to participants now.

This study's planned enrollment of 11,000 is above the median of 166 across 111 observational studies indexed under Anastomotic Leak.

Browse Anastomotic Leak studies →

Lead sponsor

This is the only study on the registry with Michel Adamina, MD as lead sponsor.

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
No
Sampling method
Non-probability sample

Study population

Patients who underwent colon or colorectal anastomosis for neoplasia, diverticulitis, mesenterial ischemia, iatrogenic or traumatic perforation, or inflammatory bowel disease. Only patients who have reached the age of 18 will be accepted. Only patients who are able to give informed consent to the procedure will be accepted.

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

  • Patients who underwent colon or colorectal anastomosis for neoplasia, diverticulitis, mesenterial ischemia, iatrogenic or traumatic perforation, or inflammatory bowel disease

Exclusion criteria

Exclusion Criteria:

  • age \< 18
  • recurrent colorectal cancer
  • peritoneal carcinomatosis or unresectable disease at time of bowel resection
  • not obtainable
  • follow-up \< 6 weeks after surgery
  • no reversal of and ostomy
Terms in these criteria, in plain language(2)

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.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

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.

05

Study design

Observational model
Other
Time perspective
Other
Enrollment
11,000 participants (estimated)
Target follow-up
5 Years
Patient registry
Yes
06

What researchers measure

Primary outcomes

  1. Occurrence of Anastomotic leak

    Occurrence of anastomotic insufficiency/leak is defined as any clinical signs of leakage, confirmed by radiological examination, endoscopy, clinical examination of the anastomosis, or upon reoperation.

    Time frame: 5 years

Secondary outcomes

  1. Occurrence of Death

    Time frame: 90 days

  2. Time to diagnosis of anastomotic leak

    Time to diagnosis of a leakage will be calculated as days between the index operation and diagnosis of the leakage by imaging with extraluminal contrast, endoscopy, re-operation, or when fecal containing fluid is objectified in a drainage.

    Time frame: 90 days

Other outcomes

  1. Disease-free survival (months)

    Time frame: 5 years

  2. Overall survival (months)

    Time frame: 5 years

  3. Adjuvant/additive immunochemotherapy (yes/no)

    Did the patient receive adjuvant/additive immunochemotherapy after surgery? (yes/no)

    Time frame: 5 years

  4. Adjuvant/additive radiotherapy (yes/no)

    Did the patient receive adjuvant/additive radiotherapy after surgery? (yes/no)

    Time frame: 5 years

  5. Additive curative surgery (no/yes: liver; lung; locoragional relapse)

    Did the patient receive additive curative surgery after the initial intervention? (no/yes: liver; lung; locoragional relapse)

    Time frame: 5 years

07

Study locations

2 sites
  • Clinical Research and Artificial Intelligence in Surgery, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
    Allschwil, Basel 4123, Switzerland
  • Kantonsspital Winterthur
    Winterthur, Zürich 8401, Switzerland
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Apr 2021 (actual). Primary completion is estimated for Dec 2022, 20 months after the start.

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

Registered
Jul 22, 2021
First posted
Aug 2, 2021
StartActual
Apr 1, 2021
Primary completionEst.
Dec 31, 2022
CompletionEst.
Dec 31, 2022
Last update
Dec 1, 2021
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 Dec 1, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04985981
Lead sponsor
Michel Adamina, MD
Collaborators
Cantonal Hospital of St. Gallen, University Hospital, Geneva, Clarunis - Universitäres Bauchzentrum Basel, University Hospital, Basel, Switzerland, University of Zurich
Responsible party
Michel Adamina, MD (Chefarzt, Kantonsspital Winterthur KSW) — Sponsor-investigator
First posted
Aug 2, 2021
Start date
Apr 1, 2021
Primary completion
Dec 31, 2022 (estimated)
Completion
Dec 31, 2022 (estimated)
Last update
Dec 1, 2021

Study contacts

Michel Adamina, Prof. Dr. med.
study chair · Clinical Research and Artificial Intelligence in Surgery, Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
Anas Taha, Dr. med.
principal investigator · None currently
Thomas Steffen
principal investigator · Cantonal Hospital of St. Gallen
Stephanie Taha-Mehlitz, Dr. med.
principal investigator · Department of Visceral Surgery, Clarunis, University Hospital Basel, Basel, Switzerland
Frédéric Ris, Prof. Dr. med.
principal investigator · Department of Surgery, Hôpitaux Universitaires de Genève

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 suspended, as verified in Nov 2021. You cannot join it, but the record below documents what was studied.

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