About this trial
The purpose of this study is to determine the efficacy and safety of a personalised surveillance and intervention protocol for patients with familial adenomatous polyposis (FAP) that have undergone (procto)colectomy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Diagnosis of FAP, at least one of following: genetic diagnosis (proven APC germline mutation) and/or clinical diagnosis (>100 colorectal adenomas in combination with a positive family history of FAP)
Have undergone prophylactic (procto)colectomy with IRA/ISA or IPAA
Age 18 years or older
Disqualifiers
Not able to remove all polyps with an indication for removal during (multiple) clearing endoscopies
Cancer at baseline endoscopy
Need for surgery
Trial population
All patients with FAP treated at one of the participating centres.
Trial design
Cohort
Prospective
Treatments tested in this trial
Personalized surveillance and intervention protocol
Procedure/SurgeryThis study uses one arm. Participants will undergo endoscopic surveillance with intervals between 6 months and 2 years, depending on severity of polyposis and performed endoscopic interventions.
Treatment groups
Trial outcomes
Primary outcomes
Advanced neoplasia
Incidence of advanced neoplasia (advanced adenoma and cancer). An advanced adenoma is defined as size ≥ 10mm and/or high-grade dysplasia. This surveillance and intervention protocol will be considered successful when the incidence of advanced neoplasia is less than 5% after a study period of 5 years.
Secondary outcomes
Characteristics polyps
Incidence and characteristics of polyps detected/removed in patients with IRA/ISA and IPAA
Radicality of different endoscopic intervention techniques
Rate of radical endoscopic interventions
Feasibility endoscopic interventions
Incidence of lesions not amenable to endoscopic removal
Surgical interventions
Incidence of surgical interventions
Sponsors and contacts
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Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Lead sponsor
Leiden University Medical Center
Collaborator
The Netherlands Cancer Institute
Collaborator
St Mark's Hospital Foundation
Collaborator
Hospital Clinic of Barcelona
Collaborator
Maria Sklodowska-Curie National Research Institute of Oncology
Collaborator
Hospital General Universitario de Alicante
Collaborator
IRCCS Azienda Ospedaliero-Universitaria di Bologna
Collaborator
Radboud University Medical Center
Collaborator
Hvidovre University Hospital
Collaborator
M.D. Anderson Cancer Center
Collaborator
University Hospital, Bonn
Collaborator