- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT00706121
S0000D: Effect of Vitamin E and/or Selenium on Colorectal Polyps in Men Enrolled on SELECT Trial SWOG-S0000 (ACP)
S0000D: A Study of the Effect of Vitamin E and/or Selenium on Adenomatous Colorectal Polyps (ACP) in Participants Enrolled in SELECT
RATIONALE: Studying tissue samples in the laboratory from participants receiving treatment on the Selenium and Vitamin E Cancer Prevention Trial (SELECT) SWOG-S0000 may help doctors predict a participant's response to treatment and help plan the best treatment.
PURPOSE: This phase III trial is studying the effect of vitamin E and/or selenium on colorectal polyps in men enrolled on SELECT Trial SWOG-S0000.
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
OBJECTIVES:
Primary
- To assess the effect of selenium on colorectal adenoma (CRA) occurrence.
- To assess the effect of selenium on number, location, size, histologic type, and degree of dysplasia of CRA.
- To assess the effect of selenium on colorectal cancer (CRC) incidence.
Secondary
- To assess the effect of vitamin E on CRA occurrence.
- To assess the effect of vitamin E on CRC incidence.
Tertiary
- To explore the effect modification of selenium and vitamin E by aspirin on CRA occurrence.
- To explore the effect modification of selenium and vitamin E by body mass index.
OUTLINE: This is a multicenter study.
Endoscopically obtained tissue samples are reviewed by study pathologists to confirm the presence (or absence) of a colorectal adenoma (CRA). If a CRA is present, the number, location, size, histology, and degree of dysplasia are documented. The CRA is also reviewed to exclude a diagnosis of colorectal cancer.
Additional data, including aspirin use, height and weight, date of birth, and other demographic and baseline characteristics, is also obtained. Participants' medical records are reviewed periodically.
Participants are followed annually.
Studietype
Registrering (Faktiske)
Fase
- Fase 3
Kontakter og plasseringer
Studiesteder
-
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Arizona
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Tucson, Arizona, Forente stater, 86724
- Arizona Cancer Center
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
DISEASE CHARACTERISTICS:
- Enrolled on the Selenium and Vitamin E Cancer Prevention Trial (SELECT) SWOG-S0000
- Screened by lower endoscopy (i.e., sigmoidoscopy and/or colonoscopy) after randomization on SELECT trial
PATIENT CHARACTERISTICS:
- Willing to sign an applicable medical records release form
- Willing to allow the release of tissue for central pathology review of resected polyps and endoscopic biopsies
PRIOR CONCURRENT THERAPY:
- See Disease Characteristics
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Forebygging
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
---|---|
Eksperimentell: Vitamin E + selenium placebo
Vitamin E and selenium placebo daily for 7 - 12 years
|
400 IU daily by mouth for 7 - 12 years
Andre navn:
1 pill by mouth daily for 7 - 12 years
Andre navn:
|
Eksperimentell: Selenium + vitamin E placebo
Selenium and vitamin E placebo daily for 7 - 12 years
|
200 mcg daily for 7 - 12 years
Andre navn:
1 pill by mouth daily for 7 - 12 years
Andre navn:
|
Eksperimentell: Vitamin E + selenium
Vitamin E and selenium daily for 7 - 12 years
|
400 IU daily by mouth for 7 - 12 years
Andre navn:
200 mcg daily for 7 - 12 years
Andre navn:
|
Placebo komparator: Vitamin E placebo + selenium placebo
Vitamin E placebo and selenium placebo daily for 7 - 12 years
|
1 pill by mouth daily for 7 - 12 years
Andre navn:
1 pill by mouth daily for 7 - 12 years
Andre navn:
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Effect of Selenium on Colorectal Adenoma (CRA) Occurrence, Analyzed by Active Selenium vs. Selenium Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
|
Effect of Selenium on Advanced Neoplasia, Analyzed by Active Selenium vs. Selenium Placebo
Tidsramme: From 1 year post randomization through study completion
|
Adenomas with diameter >=1cm or any adenoma with villous features or high-grade dysplasia
|
From 1 year post randomization through study completion
|
Effect of Selenium and/or Vitamin E on Colorectal Cancer (CRC) Incidence
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
|
Effect of Selenium on Occurrences of Multiple (>2) Adenomas
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
---|---|
Effect of Vitamin E on CRA Occurrence, Analyzed by Active Vitamin E vs. Vitamin E Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Andre resultatmål
Resultatmål |
Tidsramme |
---|---|
Effect Modification of Selenium by Body Mass Index on CRA Occurrence, Analyzed by Active Selenium vs. Selenium Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Effect Modification of Selenium by Aspirin on CRA Occurrence, Analyzed by Active Selenium vs. Selenium Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Effect Modification of Vitamin E by Body Mass Index on CRA Occurence, Analyzed by Active Vitamin e vs. Vitamin e Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Effect Modification of Vitamin E by Aspirin on CRA Occurrence, Analyzed by Active Vitamin e vs. Vitamin e Placebo
Tidsramme: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Samarbeidspartnere og etterforskere
Sponsor
Samarbeidspartnere
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- CDR0000593329
- U10CA037429 (U.S. NIH-stipend/kontrakt)
- S0000D (Annen identifikator: SWOG)
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
IPD-planbeskrivelse
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
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