- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning 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.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
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.
Studietyp
Inskrivning (Faktisk)
Fas
- Fas 3
Kontakter och platser
Studieorter
-
-
Arizona
-
Tucson, Arizona, Förenta staterna, 86724
- Arizona Cancer Center
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Beskrivning
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
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Förebyggande
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Fyrdubbla
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
---|---|
Experimentell: Vitamin E + selenium placebo
Vitamin E and selenium placebo daily for 7 - 12 years
|
400 IU daily by mouth for 7 - 12 years
Andra namn:
1 pill by mouth daily for 7 - 12 years
Andra namn:
|
Experimentell: Selenium + vitamin E placebo
Selenium and vitamin E placebo daily for 7 - 12 years
|
200 mcg daily for 7 - 12 years
Andra namn:
1 pill by mouth daily for 7 - 12 years
Andra namn:
|
Experimentell: Vitamin E + selenium
Vitamin E and selenium daily for 7 - 12 years
|
400 IU daily by mouth for 7 - 12 years
Andra namn:
200 mcg daily for 7 - 12 years
Andra namn:
|
Placebo-jämförare: 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
Andra namn:
1 pill by mouth daily for 7 - 12 years
Andra namn:
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Effect of Selenium on Colorectal Adenoma (CRA) Occurrence, Analyzed by Active Selenium vs. Selenium Placebo
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Sekundära resultatmått
Resultatmått |
Tidsram |
---|---|
Effect of Vitamin E on CRA Occurrence, Analyzed by Active Vitamin E vs. Vitamin E Placebo
Tidsram: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Andra resultatmått
Resultatmått |
Tidsram |
---|---|
Effect Modification of Selenium by Body Mass Index on CRA Occurrence, Analyzed by Active Selenium vs. Selenium Placebo
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: From 1 year post randomization through study completion
|
From 1 year post randomization through study completion
|
Samarbetspartners och utredare
Sponsor
Samarbetspartners
Publikationer och användbara länkar
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- CDR0000593329
- U10CA037429 (U.S.S. NIH-anslag/kontrakt)
- S0000D (Annan identifierare: SWOG)
Plan för individuella deltagardata (IPD)
Planerar du att dela individuella deltagardata (IPD)?
IPD-planbeskrivning
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