Colon CancerNCT00475722
Healthy Eating for Colon Cancer Prevention
A study testing 1 Healthy Eating and 2 Mediterranean in people with Colon Cancer, run by University of Michigan at 1 site in United States.
Trial summary
The purpose of this study is to help develop diets for colon cancer prevention. This study will compare the Mediterranean diet to the Healthy People 2010 diet in 120 subjects with increased risk for colorectal cancer. Read more about this study
- Who is it for?
- Ages 21 years and olderHealthy volunteers can take part
- Conditions the study is for
- Colon Cancer
- What is being tested?
- 1 Healthy Eating and 2 Mediterranean
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 120 participants
- Where
- 1 siteUnited States
- Study dates
- May 2007to Dec 2011
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 21 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Prior adenomatous polyp.
- Prior resected early (Dukes A, B, or C) colon cancer. With the exception of curative surgery for small lesions, such as endoscopically removed cancers, eligible subject will be at least two years post treatment for colorectal cancer.
- A history of colon cancer in a primary relative or in two secondary relatives.
- Good general health and not expecting major lifestyle changes in the next 6 months.
- Age 21 or older.
- Not expecting a change in hormonal therapies over the next 6 months.
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- Taking less than 81 mg/day or 325 mg aspirin every other day for prevention of cardiovascular disease.
- Dietary intake that is within the usual range for a typical American diet.
- Read and understand English.
- Sign the consent and willing to comply with all study procedures.
- Have a telephone.
- At least 5 years post any type of treatment for any other cancer except cancers that were removed completely by surgery and no other treatment was undergone.
- No more than occasional use (< 25% of the time) of pain medications and willing to take only regular strength acetaminophen while on study except for 81 mg/day or 325 mg every other day of aspirin for prevention of cardiovascular disease.
Who cannot join
- On medically prescribed diets or following a diet that would require extensive counseling to correct nutritional deficiencies.
- Taking supplements or medications that might obscure our ability to detect an effect of diet (eg. lipid-lowering medications, insulin, fish oils, mega-vitamins).
- Are pregnant or lactating or planning to get pregnant.
- Previous diagnosis of HIV or hepatitis C.
- Have cancer at the present time.
- Being treated with or taking therapies or supplements that could obscure our ability to detect diet effects, such as fish oils.
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- Previous advanced cancer (Duke's D) or hereditary and familial polyposis (HNPCC/FAP) because the latter are rare conditions with unique etiology.
- Due to the effects of inflammation on biomarker levels in mucosa, persons with Crohn's disease or inflammatory bowel disease will be excluded.
- Persons with BMI < 18.5 or > 35 kg/m2 since low BMI could indicate eating disorders and high BMI values, above the midpoint of the obesity range, could indicate more prevalent health problems and these persons can be more difficult to counsel.
- Persons taking very high levels of aspirin or non-steroidal anti-inflammatory agents (NSAIDS) for conditions such as arthritis, a chronic inflammatory condition, will be excluded since it will preclude our ability to detect a further decrease in PGE2.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Mediterranean Diet in Colon Cancer Prevention
The purpose of this study is to help develop diets for colon cancer prevention. This study will compare the Mediterranean diet to the Healthy People 2010 diet in 120 subjects with increased risk for colorectal cancer.
Read the detailed description
There is substantial epidemiological evidence that dietary patterns influence colorectal cancer risk. The associations of any particular nutrient with increased or decreased risks, however, may not be due to that nutrient per se but to the whole foods that are rich in that nutrient. Simultaneously, reducing intakes of foods associated with increased risk while increasing foods identified in preventive diets may be the best approach for prevention. The Cretan-Mediterranean diet in particular appears to hold great promise for cancer prevention. The major components of the traditional Cretan diet have been associated with decreased colon cancer. Relative to the American diet, this diet has lower n-6/n-3 and n-6/n-9 fatty acid ratios, lower polyunsaturated fatty acid intake, lower red meat intake, and higher intakes of plant-based foods and monounsaturated fatty acids.
The hypothesis of this study is that adherence to a Mediterranean type of diet will result in a decrease in n-6 fatty acids and increased n-3 and n-9 fatty acids in human colorectal mucosa. This together with aspects of the diet such as increased intakes of fruits and vegetables, is expected to modulate eicosanoid metabolism and epithelial proliferation in normal mucosa. 120 persons, with an increased risk for colorectal cancer, will be randomized to a modified Mediterranean diet or a Healthy People 2010 diet for six months.
- Conditions
- Colon Cancer
- Being tested
- 1 Healthy Eating, 2 Mediterranean
- Keywords
- cancer, colon, prevention, healthy eating, Mediterranean diet, PGE2, cyclooxygenase, lipoxygenase, Healthy People 2010 diet, dietary prevention of colon cancer
- Medical subject headings
- Colonic Neoplasms, Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
1 Healthy EatingBehavioural
6 months telephone counseling
2 MediterraneanBehavioural
6 months telephone counseling
| Study group | Role | What they receive |
|---|---|---|
| 1 Healthy Eating | Active comparator | Healthy People 2010 Diet using an exchange list Receives: Behavioral: 1 Healthy Eating |
| 2 Mediterranean | Experimental | Mediterranean Diet using an exchange list Receives: Behavioral: 2 Mediterranean |
What is being measured
The primary outcome is the main question the study is designed to answer.
Adherence to Dietary Goals
Percentage of participants who met 70% of diet goals as outlined in the exchange list
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 May 2007 (estimated)
- Study startMay 2007
- Primary completionNov 2010
- Study completionDec 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Colon CancerStudies of the same condition, open and under way.
- More trials run by University of MichiganThe 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 N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 120 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Michigan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Zora Djuric, University of Michigan
- Investigators
- Zora Djuric, Ph.D., Principal investigator, University of Michigan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00475722
- Sponsor's protocol ID
- HUM00007622
- Status last verified
- Aug 2016
- First submitted
- 17 May 2007
- Last updated
- 26 Sep 2016
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- Individual data sharing
- Undecided
Publications
Djuric Z, Ruffin MT 4th, Rapai ME, Cornellier ML, Ren J, Ferreri TG, Askew LM, Sen A, Brenner DE, Turgeon DK. A Mediterranean dietary intervention in persons at high risk of colon cancer: recruitment and retention to an intensive study requiring biopsies. Contemp Clin Trials. 2012 Sep;33(5):881-8. doi: 10.1016/j.cct.2012.05.006. Epub 2012 May 26.
PubMed 22640923Sidahmed E, Cornellier ML, Ren J, Askew LM, Li Y, Talaat N, Rapai MS, Ruffin MT, Turgeon DK, Brenner D, Sen A, Djuric Z. Development of exchange lists for Mediterranean and Healthy Eating diets: implementation in an intervention trial. J Hum Nutr Diet. 2014 Oct;27(5):413-25. doi: 10.1111/jhn.12158. Epub 2013 Sep 20.
PubMed 24112099Sen A, Ren J, Ruffin MT, Turgeon DK, Brenner DE, Sidahmed E, Rapai ME, Cornellier ML, Djuric Z. Relationships between serum and colon concentrations of carotenoids and fatty acids in randomized dietary intervention trial. Cancer Prev Res (Phila). 2013 Jun;6(6):558-65. doi: 10.1158/1940-6207.CAPR-13-0019. Epub 2013 Apr 16.
PubMed 23592741Umoh FI, Kato I, Ren J, Wachowiak PL, Ruffin MT 4th, Turgeon DK, Sen A, Brenner DE, Djuric Z. Markers of systemic exposures to products of intestinal bacteria in a dietary intervention study. Eur J Nutr. 2016 Mar;55(2):793-798. doi: 10.1007/s00394-015-0900-7. Epub 2015 Apr 24.
PubMed 25903259Djuric Z, Turgeon DK, Ren J, Neilson A, Plegue M, Waters IG, Chan A, Askew LM, Ruffin MT 4th, Sen A, Brenner DE. Effects of a Mediterranean Diet Intervention on Anti- and Pro-Inflammatory Eicosanoids, Epithelial Proliferation, and Nuclear Morphology in Biopsies of Normal Colon Tissue. Nutr Cancer. 2015;67(5):721-9. doi: 10.1080/01635581.2015.1029637. Epub 2015 Apr 14.
PubMed 25869112Li Y, Sen A, Ren J, Askew LM, Sidahmed E, Brenner DE, Ruffin MT 4th, Turgeon DK, Djuric Z. Effects of vitamin E from supplements and diet on colonic alpha- and gamma-tocopherol concentrations in persons at increased colon cancer risk. Nutr Cancer. 2015;67(1):73-81. doi: 10.1080/01635581.2015.965333. Epub 2014 Nov 5.
PubMed 25372556Porenta SR, Ko YA, Gruber SB, Mukherjee B, Baylin A, Ren J, Djuric Z. Interaction of fatty acid genotype and diet on changes in colonic fatty acids in a Mediterranean diet intervention study. Cancer Prev Res (Phila). 2013 Nov;6(11):1212-21. doi: 10.1158/1940-6207.CAPR-13-0131. Epub 2013 Sep 10.
PubMed 24022589Djuric Z, Bassis CM, Plegue MA, Ren J, Chan R, Sidahmed E, Turgeon DK, Ruffin MT 4th, Kato I, Sen A. Colonic Mucosal Bacteria Are Associated with Inter-Individual Variability in Serum Carotenoid Concentrations. J Acad Nutr Diet. 2018 Apr;118(4):606-616.e3. doi: 10.1016/j.jand.2017.09.013. Epub 2017 Dec 21.
PubMed 29274690Sidahmed E, Sen A, Ren J, Patel A, Turgeon DK, Ruffin MT, Brenner DE, Djuric Z. Colonic Saturated Fatty Acid Concentrations and Expression of COX-1, but not Diet, Predict Prostaglandin E2 in Normal Human Colon Tissue. Nutr Cancer. 2016 Oct;68(7):1192-201. doi: 10.1080/01635581.2016.1213866. Epub 2016 Aug 22.
PubMed 27548026
Study at a glance
From the registry record, last updated by the sponsor on 26 Sep 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Mediterranean Diet in Colon Cancer Prevention
- ClinicalTrials.gov ID
- NCT00475722
- Acronym / sponsor ID
- HUM00007622
- Conditions
- Colon Cancer
- Keywords
- cancer, colon, prevention, healthy eating, Mediterranean diet, PGE2, cyclooxygenase, lipoxygenase
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 120 participants (actual)
- Lead sponsor
- University of MichiganUniversity, hospital or other
- Study start
- May 2007
- Primary completion
- Nov 2010 (actual)
- Study completion
- Dec 2011 (actual)
- First posted
- 21 May 2007 (estimated)
- Results
- Posted 8 Jul 2015
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to help develop diets for colon cancer prevention. This study will compare the Mediterranean diet to the Healthy People 2010 diet in 120 subjects with increased risk for colorectal cancer.
Detailed description
There is substantial epidemiological evidence that dietary patterns influence colorectal cancer risk. The associations of any particular nutrient with increased or decreased risks, however, may not be due to that nutrient per se but to the whole foods that are rich in that nutrient. Simultaneously, reducing intakes of foods associated with increased risk while increasing foods identified in preventive diets may be the best approach for prevention. The Cretan-Mediterranean diet in particular appears to hold great promise for cancer prevention. The major components of the traditional Cretan diet have been associated with decreased colon cancer. Relative to the American diet, this diet has lower n-6/n-3 and n-6/n-9 fatty acid ratios, lower polyunsaturated fatty acid intake, lower red meat intake, and higher intakes of plant-based foods and monounsaturated fatty acids.
The hypothesis of this study is that adherence to a Mediterranean type of diet will result in a decrease in n-6 fatty acids and increased n-3 and n-9 fatty acids in human colorectal mucosa. This together with aspects of the diet such as increased intakes of fruits and vegetables, is expected to modulate eicosanoid metabolism and epithelial proliferation in normal mucosa. 120 persons, with an increased risk for colorectal cancer, will be randomized to a modified Mediterranean diet or a Healthy People 2010 diet for six months.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 Healthy Eating | Active comparator | Behavioral: 1 Healthy EatingHealthy People 2010 Diet using an exchange list |
| 2 Mediterranean | Experimental | Behavioral: 2 MediterraneanMediterranean Diet using an exchange list |
Who may qualify
- Ages
- 21 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (13 listed)
- Prior adenomatous polyp.
- Prior resected early (Dukes A, B, or C) colon cancer. With the exception of curative surgery for small lesions, such as endoscopically removed cancers, eligible subject will be at least two years post treatment for colorectal cancer.
- A history of colon cancer in a primary relative or in two secondary relatives.
- Good general health and not expecting major lifestyle changes in the next 6 months.
- Age 21 or older.
Key exclusion criteria (10 listed)
- On medically prescribed diets or following a diet that would require extensive counseling to correct nutritional deficiencies.
- Taking supplements or medications that might obscure our ability to detect an effect of diet (eg. lipid-lowering medications, insulin, fish oils, mega-vitamins).
- Are pregnant or lactating or planning to get pregnant.
- Previous diagnosis of HIV or hepatitis C.
- Have cancer at the present time.
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 |
|---|---|---|
| 1 Healthy Eating6 months telephone counseling | Behavioural | 1 Healthy Eating |
| 2 Mediterranean6 months telephone counseling | Behavioural | 2 Mediterranean |
Primary outcome
Adherence to Dietary Goals
Time frame: 6 months
Percentage of participants who met 70% of diet goals as outlined in the exchange list
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Sep 2016.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 22640923Djuric Z, Ruffin MT 4th, Rapai ME, Cornellier ML, Ren J, Ferreri TG, Askew LM, Sen A, Brenner DE, Turgeon DK. A Mediterranean dietary intervention in persons at high risk of colon cancer: recruitment and retention to an intensive study requiring biopsies. Contemp Clin Trials. 2012 Sep;33(5):881-8. doi: 10.1016/j.cct.2012.05.006. Epub 2012 May 26.
- Results publication: PubMed 24112099Sidahmed E, Cornellier ML, Ren J, Askew LM, Li Y, Talaat N, Rapai MS, Ruffin MT, Turgeon DK, Brenner D, Sen A, Djuric Z. Development of exchange lists for Mediterranean and Healthy Eating diets: implementation in an intervention trial. J Hum Nutr Diet. 2014 Oct;27(5):413-25. doi: 10.1111/jhn.12158. Epub 2013 Sep 20.
- Results publication: PubMed 23592741Sen A, Ren J, Ruffin MT, Turgeon DK, Brenner DE, Sidahmed E, Rapai ME, Cornellier ML, Djuric Z. Relationships between serum and colon concentrations of carotenoids and fatty acids in randomized dietary intervention trial. Cancer Prev Res (Phila). 2013 Jun;6(6):558-65. doi: 10.1158/1940-6207.CAPR-13-0019. Epub 2013 Apr 16.
- Results publication: PubMed 25903259Umoh FI, Kato I, Ren J, Wachowiak PL, Ruffin MT 4th, Turgeon DK, Sen A, Brenner DE, Djuric Z. Markers of systemic exposures to products of intestinal bacteria in a dietary intervention study. Eur J Nutr. 2016 Mar;55(2):793-798. doi: 10.1007/s00394-015-0900-7. Epub 2015 Apr 24.
- Results publication: PubMed 25869112Djuric Z, Turgeon DK, Ren J, Neilson A, Plegue M, Waters IG, Chan A, Askew LM, Ruffin MT 4th, Sen A, Brenner DE. Effects of a Mediterranean Diet Intervention on Anti- and Pro-Inflammatory Eicosanoids, Epithelial Proliferation, and Nuclear Morphology in Biopsies of Normal Colon Tissue. Nutr Cancer. 2015;67(5):721-9. doi: 10.1080/01635581.2015.1029637. Epub 2015 Apr 14.
- Results publication: PubMed 25372556Li Y, Sen A, Ren J, Askew LM, Sidahmed E, Brenner DE, Ruffin MT 4th, Turgeon DK, Djuric Z. Effects of vitamin E from supplements and diet on colonic alpha- and gamma-tocopherol concentrations in persons at increased colon cancer risk. Nutr Cancer. 2015;67(1):73-81. doi: 10.1080/01635581.2015.965333. Epub 2014 Nov 5.
- Results publication: PubMed 24022589Porenta SR, Ko YA, Gruber SB, Mukherjee B, Baylin A, Ren J, Djuric Z. Interaction of fatty acid genotype and diet on changes in colonic fatty acids in a Mediterranean diet intervention study. Cancer Prev Res (Phila). 2013 Nov;6(11):1212-21. doi: 10.1158/1940-6207.CAPR-13-0131. Epub 2013 Sep 10.
- Derived from this study: PubMed 29274690Djuric Z, Bassis CM, Plegue MA, Ren J, Chan R, Sidahmed E, Turgeon DK, Ruffin MT 4th, Kato I, Sen A. Colonic Mucosal Bacteria Are Associated with Inter-Individual Variability in Serum Carotenoid Concentrations. J Acad Nutr Diet. 2018 Apr;118(4):606-616.e3. doi: 10.1016/j.jand.2017.09.013. Epub 2017 Dec 21.
- Derived from this study: PubMed 27548026Sidahmed E, Sen A, Ren J, Patel A, Turgeon DK, Ruffin MT, Brenner DE, Djuric Z. Colonic Saturated Fatty Acid Concentrations and Expression of COX-1, but not Diet, Predict Prostaglandin E2 in Normal Human Colon Tissue. Nutr Cancer. 2016 Oct;68(7):1192-201. doi: 10.1080/01635581.2016.1213866. Epub 2016 Aug 22.
- Individual participant dataSharing planned: Undecided
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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.
Zora Djuric, Ph.D. principal investigator
University of Michigan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing 1 Healthy Eating and 2 Mediterranean in people with Colon Cancer, run by University of Michigan at 1 site in United States.
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 13 inclusion and 10 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: finished, as of the sponsor's last update on 26 Sep 2016. 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 United States. 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. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Yes. Results are posted in the registry (first posted 8 Jul 2015). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Adherence to Dietary Goals (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00475722, which also lists 9 linked publications.
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 26 Sep 2016.