Clinical trial Recruiting at 2 sites Observational Ages 18 and up

Personalized care for patients with familial adenomatous polyposis

Official title: A Personalized Surveillance and Intervention Protocol for Duodenal and Gastric Polyposis in Patients With Familial Adenomatous Polyposis

Run by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · NCT04677998 · Data updated 2026-11-12

This study is testing a personalized care plan for people with familial adenomatous polyposis to see if it can better manage their duodenal and gastric polyps and reduce the need for surgery.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment1000 (estimated)
SponsorAcademisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Academic / other
Locations2 sites (Houston, Texas and 1 other locations)
StatusRecruiting
StartedNovember 24, 2020
Main results expectedNovember 2026
Study endsNovember 2027
Registry record updatedFebruary 23, 2026
Trial IDNCT04677998 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 years or older with a confirmed diagnosis of familial adenomatous polyposis.

Probably not a fit

Patients who have undergone endoscopic removal of all polyps or those with existing gastric or duodenal cancer may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to evaluate the efficacy and safety of a personalized surveillance and intervention protocol for duodenal and gastric polyposis in patients diagnosed with familial adenomatous polyposis (FAP). Given the high risk of duodenal adenomas in FAP patients, the study seeks to improve upon the existing Spigelman classification system, which has limitations in predicting cancer risk. By implementing a tailored approach to surveillance and intervention, the researchers hope to enhance patient outcomes and reduce the need for surgical interventions, which carry significant risks. The study will involve monitoring patients and determining the best course of action based on individual assessments.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the risk of duodenal cancer and improve the management of patients with familial adenomatous polyposis.

How similar studies have gone: While there have been studies addressing surveillance in FAP patients, this personalized approach is novel and aims to address specific limitations of existing protocols.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 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)
* Age 18 years or older

Exclusion Criteria:

* Endoscopic removal of all polyps with an indication for removal not possible/feasible
* Gastric or duodenal cancer at baseline endoscopy
* Need for surgery

Where it's running

  • MD Anderson
    Houston, Texas, United States
    Recruiting
  • Academic Medical Centre
    Amsterdam, North Holland, Netherlands
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.