Familial Adenomatous PolyposisPhase 2NCT04296851
Niclosamide for Familial Adenomatous Polyposis
A Phase 2 study testing Niclosamide in people with Familial Adenomatous Polyposis, run by Yonsei University at 1 site in South Korea.
Trial summary
Familial adenomatous polyposis (FAP) leads to adenomas and eventual adenocarcinomas in colon and less frequently, duodenum. Chemopreventive strategies have been studied in FAP patients to delay the development of adenomas and cancers. Read more about this study
- Who is it for?
- Ages 20 to 65 years
- Conditions the study is for
- Familial Adenomatous Polyposis
- What is being tested?
- Niclosamide
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 72 participants
- Where
- 1 siteSouth Korea
- Study dates
- 14 Feb 2020to Feb 2023
- Phase
- Phase 2
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients with familial adenomatous polyposis(FAP) who are 20 to 65 years of age.
- FAP patients who have colonic or duodenal polyp.
- FAP patients who have five or more polyps 2mm or more in diameter in endoscopic examination.
Who cannot join
- FAP patients who had a history of colectomy within the previous 12 months or need to undergo colectomy within 8 months after randomization.
- FAP patients with malignant disease, including colorectal cancer.
- FAP patients who used NSAIDs (non-steroidal anti-inflammatory drugs) or aspirin three or more times a week within 6 months of randomization.
- Pregnant or breast-feeding patients. 6. Patients with abnormal results of serum laboratory tests (renal function and liver function test).
Trial locations and contacts
1 site in 1 country.
South Korea1 site, 1 recruiting
- Recruiting
Department of Internal Medicine, Yonsei University College of Medicine
Seoul
TAE IL KIM, Ph.D, 82-2-2228-1965, taeilkim@yuhs.ac
About this study
Official title: The Chemopreventive Effect of Niclosamide in Patients With Familial Adenomatous Polyposis: Double Blinded Randomized Controlled Study
Familial adenomatous polyposis (FAP) leads to adenomas and eventual adenocarcinomas in colon and less frequently, duodenum. Chemopreventive strategies have been studied in FAP patients to delay the development of adenomas and cancers. The non-steroidal anti-inflammatory drugs (NSAIDs) and selective cyclooxygenase-2 inhibitor have shown the regression of colorectal and duodenal adenomas in FAP patients. However, these drugs showed gastrointestinal damage and cardiovascular risks, and new preventive strategies are needed. Niclosamide, an anti-helminthic drug, has recently been suggested to have a suppressive effect on tumorigenesis via inhibition of Wnt pathway, and have no significant safety issues. The investigators devised a double-blind randomized controlled trial to evaluate the effect of niclosamide on polyps of colorectum and duodenum in FAP patients.
Read the detailed description
This clinical trial is a double-blind randomized controlled trial to evaluate the effect of niclosamide on polyps of colorectum and duodenum in FAP patients. FAP patients, satisfied an enrollment criteria, will be randomly assigned in a 2:1 ratio to receive niclosamide (650 mg) or placebo tablets orally once a day for 6 months. The base-line and six-month endoscopic examination (colonoscopy/sigmoidoscopy and upper gastrointestinal endoscopy) will be recorded, and photographs will be taken at the tattoo-marked area. The number and size of polyps, and a qualitative assessment of the total extent of polyposis will be measured. If there is no significant improvement in any of the 12 initial cases (niclosamide 8: placebo 4), this trial will be discontinued.
- Conditions
- Familial Adenomatous Polyposis
- Being tested
- Niclosamide, placebo
- Keywords
- chemoprevention, niclosamide, familial adenomatous polyposis
- Medical subject headings
- Adenomatous Polyposis Coli
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
NiclosamideDrug
The subjects will be randomly assigned in a 2:1 ratio to receive niclosamide or identical-appearing placebo tablets orally for 6 months: niclosamide 650mg once a day in arm 1, placebo once a day in arm 2.
placeboDrug
The subjects will be randomly assigned in a 2:1 ratio to receive niclosamide or identical-appearing placebo tablets orally for 6 months: niclosamide 650mg once a day in arm 1, placebo once a day in arm 2.
| Study group | Role | What they receive |
|---|---|---|
| niclosamide | Experimental | 650mg daily Receives: Drug: Niclosamide |
| placebo | Placebo comparator | identical- appearing placebo Receives: Drug: placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean percentage change of the number and size of polyps in colon and/or duodenum.
At the base-line endoscopy (colonoscopy and upper gastrointestinal endoscopy), india-ink tattoo will be placed in the ascending colon, sigmoid colon/rectum, and duodenum. In case of the subjects with retained rectum after colectomy and ileorectal anastomosis, sigmoidoscopy will be performed. The base-line and six-month endoscopic examination will be recorded, and photographs will be taken at the tattoo-marked area and used for measurements of the number and size of polyps. The diameter of a polyp will be measured with the aid of biopsy forceps included in the photographic field, and only distinct polyps at least 2 mm in diameter will be counted.
Measured: After six-month administration of niclosamide/placebo
Secondary outcomes (1)
A qualitative assessment of the total extent of colorectal polyposis
A qualitative assessment of the total extent of colorectal polyposis will be conducted via video review(at base line and month 6) by two endoscopists experienced in the management of FAP, and scored as the same as, better than, or worse than base-line endoscopic findings, without the endoscopists' being aware of treatment group.
Measured: After six-month administration of niclosamide/placebo
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Mar 2020
- Study start14 Feb 2020
- Primary completionDec 2022 (estimated)
- Study completionFeb 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Familial Adenomatous PolyposisStudies of the same condition, open and under way.
- More trials run by Yonsei UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 72 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Yonsei University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04296851
- Sponsor's protocol ID
- 4-2017-0566
- Status last verified
- Mar 2020
- First submitted
- 3 Mar 2020
- Last updated
- 5 Mar 2020
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 5 Mar 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Chemopreventive Effect of Niclosamide in Patients With Familial Adenomatous Polyposis: Double Blinded Randomized Controlled Study
- ClinicalTrials.gov ID
- NCT04296851
- Acronym / sponsor ID
- 4-2017-0566
- Conditions
- Familial Adenomatous Polyposis
- Keywords
- chemoprevention, niclosamide, familial adenomatous polyposis
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 72 participants (estimated)
- Lead sponsor
- Yonsei UniversityUniversity, hospital or other
- Study start
- 14 Feb 2020 (actual)
- Primary completion
- Dec 2022 (estimated)
- Study completion
- Feb 2023 (estimated)
- First posted
- 5 Mar 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Familial adenomatous polyposis (FAP) leads to adenomas and eventual adenocarcinomas in colon and less frequently, duodenum. Chemopreventive strategies have been studied in FAP patients to delay the development of adenomas and cancers. The non-steroidal anti-inflammatory drugs (NSAIDs) and selective cyclooxygenase-2 inhibitor have shown the regression of colorectal and duodenal adenomas in FAP patients. However, these drugs showed gastrointestinal damage and cardiovascular risks, and new preventive strategies are needed. Niclosamide, an anti-helminthic drug, has recently been suggested to have a suppressive effect on tumorigenesis via inhibition of Wnt pathway, and have no significant safety issues. The investigators devised a double-blind randomized controlled trial to evaluate the effect of niclosamide on polyps of colorectum and duodenum in FAP patients.
Detailed description
This clinical trial is a double-blind randomized controlled trial to evaluate the effect of niclosamide on polyps of colorectum and duodenum in FAP patients. FAP patients, satisfied an enrollment criteria, will be randomly assigned in a 2:1 ratio to receive niclosamide (650 mg) or placebo tablets orally once a day for 6 months. The base-line and six-month endoscopic examination (colonoscopy/sigmoidoscopy and upper gastrointestinal endoscopy) will be recorded, and photographs will be taken at the tattoo-marked area. The number and size of polyps, and a qualitative assessment of the total extent of polyposis will be measured. If there is no significant improvement in any of the 12 initial cases (niclosamide 8: placebo 4), this trial will be discontinued.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| niclosamide | Experimental | Drug: Niclosamide650mg daily |
| placebo | Placebo comparator | Drug: placeboidentical- appearing placebo |
Who may qualify
- Ages
- 20 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patients with familial adenomatous polyposis(FAP) who are 20 to 65 years of age.
- FAP patients who have colonic or duodenal polyp.
- FAP patients who have five or more polyps 2mm or more in diameter in endoscopic examination.
Key exclusion criteria (4 listed)
- FAP patients who had a history of colectomy within the previous 12 months or need to undergo colectomy within 8 months after randomization.
- FAP patients with malignant disease, including colorectal cancer.
- FAP patients who used NSAIDs (non-steroidal anti-inflammatory drugs) or aspirin three or more times a week within 6 months of randomization.
- Pregnant or breast-feeding patients. 6. Patients with abnormal results of serum laboratory tests (renal function and liver function test).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| NiclosamideThe subjects will be randomly assigned in a 2:1 ratio to receive niclosamide or identical-appearing placebo tablets orally for 6 months: niclosamide 650mg once a day in arm 1, placebo once a day in arm 2. | Drug | niclosamide |
| placeboThe subjects will be randomly assigned in a 2:1 ratio to receive niclosamide or identical-appearing placebo tablets orally for 6 months: niclosamide 650mg once a day in arm 1, placebo once a day in arm 2. | Drug | placebo |
Primary outcome
Mean percentage change of the number and size of polyps in colon and/or duodenum.
Time frame: After six-month administration of niclosamide/placebo
At the base-line endoscopy (colonoscopy and upper gastrointestinal endoscopy), india-ink tattoo will be placed in the ascending colon, sigmoid colon/rectum, and duodenum. In case of the subjects with retained rectum after colectomy and ileorectal anastomosis, sigmoidoscopy will be performed. The base-line and six-month endoscopic examination will be recorded, and photographs will be taken at the tattoo-marked area and used for measurements of the number and size of polyps. The diameter of a polyp will be measured with the aid of biopsy forceps included in the photographic field, and only distinct polyps at least 2 mm in diameter will be counted.
1 secondary outcome
A qualitative assessment of the total extent of colorectal polyposis
Time frame: After six-month administration of niclosamide/placebo
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Mar 2020.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Niclosamide in people with Familial Adenomatous Polyposis, run by Yonsei University at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 5 Mar 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact TAE IL KIM, Ph.D (82-2-2228-1965, taeilkim@yuhs.ac), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean percentage change of the number and size of polyps in colon and/or duodenum. (time frame: After six-month administration of niclosamide/placebo). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Mar 2020.