Prostate CancerNCT01692587
Does Protein Restriction Inhibit Prostrate Cancer Growth
A study testing Protein restrictive diet in people with Prostate Cancer, run by Washington University School of Medicine at 1 site in United States.
Trial summary
The Purpose of the Protein Study is to investigate whether a reduced protein diet can inhibit the growth of prostate cancer in humans. The Investigators hypothesis is that a reduced protein diet will inhibit expression of genes that are involved in the growth of prostate cancer. Read more about this study
- Who is it for?
- Any age, men only
- Conditions the study is for
- Prostate Cancer
- What is being tested?
- Protein restrictive diet
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 65 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2011to Mar 2015
- Phase
- Interventional
- 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 Any age
- Men only
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- group 1
- Patient must have a diagnosis of prostate cancer confirmed by pathology.
- Patient must be scheduled to undergo radical prostatectomy no sooner than 6 weeks from date of enrollment (to allow for a minimum of 4 weeks on the low protein diet).
- Patient must have adequate baseline protein intake (screening 4-day food record shows protein > 1.0 g/kg FFM)
- Patient must be able to understand the English-language instructions.
- Patient must be able to comply with the low protein diet (as evaluated by the dietitian and other study team members).
Show all 16Show fewer
- Patient must be able to understand and willing to sign an IRB-approved written informed consent document.
- 5.2.2 Inclusion Criteria - Group 2
- Patient must have a diagnosis of prostate cancer.
- Patient must have previously undergone a radical prostatectomy for treatment of prostate cancer.
- Patient must have a detectable PSA (defined as PSA ≥ 0.1) in at least two consecutive measurements, taken at least one month apart, with no therapy between the PSA measurements. If the patient has had additional therapy after the radical prostatectomy, there must be evidence of a rising PSA (i.e., two consecutive measurements at least one month apart) after the patient has completed the intervening therapy (meaning that the patient must have failed treatment).
- Patient must have adequate baseline protein intake (screening 4-day food record shows protein > 1.0 g/kg FFM).
- Patient must have adequate baseline caloric intake (screening 4-day food record shows caloric intake of > 1500 kcal/day).
- Patient must be able to understand the English-language instructions.
- Patient must be able to comply with the low protein diet (as evaluated by the dietitian and other study team members).
- Patient must be able to understand and willing to sign an IRB-approved written informed consent document.
Who cannot join
- Patient must not currently be receiving any therapy for prostate cancer.
- Patient must not have any serious chronic illness such as unstable angina, any uncontrolled metabolic disorder, or any immunologic disorder.
- Patient must not have a history of any previous malignancy (with the exception of squamous or basal cell carcinoma of the skin) in the 5 years prior to enrollment (for Group 1) or 12 months prior to enrollment (for Group 2).
- Patient must not have a previous history of a stroke.
- Patient must not be taking any medications that might confound the study results (anabolic agents (such as androgen, androgen precursor, rhGH) in the 6 months prior to enrollment; corticosteroids (other than nasal) in the 6 months prior to enrollment; or finasteride or dutasteride).
- Patient must not have dementia or any other cognitive impairment.
- Patient must not have a lifestyle or fixed diet pattern that would interfere with participation in or interpretation of the results of this study
- -
Trial locations and contacts
1 site in 1 country.
United States1 site
Washington University School of Medicine
St Louis, Missouri, 63110
About this study
The Purpose of the Protein Study is to investigate whether a reduced protein diet can inhibit the growth of prostate cancer in humans.
The Investigators hypothesis is that a reduced protein diet will inhibit expression of genes that are involved in the growth of prostate cancer.
Read the detailed description
The primary objective of this study is to determine whether or not a low protein diet has an inhibitory effect on prostate cancer cell growth.
The primary outcome measures relative to the investigators primary objectives are:
For Group 1 the expression of genes and proteins of the PI-3K/Akt/mTOR pathway. For Group 2 the PSA values obtained every three months.
- Conditions
- Prostate Cancer
- Being tested
- Protein restrictive diet
- Keywords
- PSA, protein, prostate
- Medical subject headings
- Prostatic Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Protein restrictive dietOther
To begin a reduced protein diet
| Study group | Role | What they receive |
|---|---|---|
| Control | No intervention | No changes in dietary group |
| Protein restrictive diet | Experimental | reduced protein diet Receives: Other: Protein restrictive diet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Group1--Expression of genes and proteins of the PI-3K/Akt/mTOR pathway. Group 2--PSA values obtained every three months
The investigators will be looking at the increase or decrease of PSA values between control and protein restricted diet participants obtained for the length of study.
Measured: group 1- (4-6 weeks), group 2 -(52 weeks)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Sep 2012 (estimated)
- Study startJan 2011
- Primary completionMar 2015
- Study completionMar 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Prostate CancerStudies of the same condition, open and under way.
- More trials run by Washington University School of MedicineThe 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
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 65 participants (actual)
Sponsor and investigators
- Lead sponsor
- Washington University School of Medicine
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Luigi Fontana, MD,PhD, Principal investigator, Washington University School of MedicineValeria Tosti, MD, Principal investigator, Washington University School of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01692587
- Sponsor's protocol ID
- 201011804
- Status last verified
- Mar 2021
- First submitted
- 7 Sep 2012
- Last updated
- 26 Mar 2021
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- No: Plan to publish
Publications
Fontana L, Cummings NE, Arriola Apelo SI, Neuman JC, Kasza I, Schmidt BA, Cava E, Spelta F, Tosti V, Syed FA, Baar EL, Veronese N, Cottrell SE, Fenske RJ, Bertozzi B, Brar HK, Pietka T, Bullock AD, Figenshau RS, Andriole GL, Merrins MJ, Alexander CM, Kimple ME, Lamming DW. Decreased Consumption of Branched-Chain Amino Acids Improves Metabolic Health. Cell Rep. 2016 Jul 12;16(2):520-530. doi: 10.1016/j.celrep.2016.05.092. Epub 2016 Jun 23.
PubMed 27346343Trevino-Villarreal JH, Reynolds JS, Bartelt A, Langston PK, MacArthur MR, Arduini A, Tosti V, Veronese N, Bertozzi B, Brace LE, Mejia P, Trocha K, Kajitani GS, Longchamp A, Harputlugil E, Gathungu R, Bird SS, Bullock AD, Figenshau RS, Andriole GL, Thompson A, Heeren J, Ozaki CK, Kristal BS, Fontana L, Mitchell JR. Dietary protein restriction reduces circulating VLDL triglyceride levels via CREBH-APOA5-dependent and -independent mechanisms. JCI Insight. 2018 Nov 2;3(21):e99470. doi: 10.1172/jci.insight.99470.
PubMed 30385734Eitan E, Tosti V, Suire CN, Cava E, Berkowitz S, Bertozzi B, Raefsky SM, Veronese N, Spangler R, Spelta F, Mustapic M, Kapogiannis D, Mattson MP, Fontana L. In a randomized trial in prostate cancer patients, dietary protein restriction modifies markers of leptin and insulin signaling in plasma extracellular vesicles. Aging Cell. 2017 Dec;16(6):1430-1433. doi: 10.1111/acel.12657. Epub 2017 Sep 17.
PubMed 28921841
Study at a glance
From the registry record, last updated by the sponsor on 26 Mar 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Does Protein Restriction Inhibit Prostrate Cancer Growth
- ClinicalTrials.gov ID
- NCT01692587
- Acronym / sponsor ID
- 201011804
- Conditions
- Prostate Cancer
- Keywords
- PSA, protein, prostate
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 65 participants (actual)
- Lead sponsor
- Washington University School of MedicineUniversity, hospital or other
- Study start
- Jan 2011 (actual)
- Primary completion
- Mar 2015 (actual)
- Study completion
- Mar 2015 (actual)
- First posted
- 25 Sep 2012 (estimated)
- 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.
The Purpose of the Protein Study is to investigate whether a reduced protein diet can inhibit the growth of prostate cancer in humans.
The Investigators hypothesis is that a reduced protein diet will inhibit expression of genes that are involved in the growth of prostate cancer.
Detailed description
The primary objective of this study is to determine whether or not a low protein diet has an inhibitory effect on prostate cancer cell growth.
The primary outcome measures relative to the investigators primary objectives are:
For Group 1 the expression of genes and proteins of the PI-3K/Akt/mTOR pathway. For Group 2 the PSA values obtained every three months.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Control | No intervention | –No changes in dietary group |
| Protein restrictive diet | Experimental | Other: Protein restrictive dietreduced protein diet |
Who may qualify
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (16 listed)
- group 1
- Patient must have a diagnosis of prostate cancer confirmed by pathology.
- Patient must be scheduled to undergo radical prostatectomy no sooner than 6 weeks from date of enrollment (to allow for a minimum of 4 weeks on the low protein diet).
- Patient must have adequate baseline protein intake (screening 4-day food record shows protein > 1.0 g/kg FFM)
- Patient must be able to understand the English-language instructions.
Key exclusion criteria (8 listed)
- Patient must not currently be receiving any therapy for prostate cancer.
- Patient must not have any serious chronic illness such as unstable angina, any uncontrolled metabolic disorder, or any immunologic disorder.
- Patient must not have a history of any previous malignancy (with the exception of squamous or basal cell carcinoma of the skin) in the 5 years prior to enrollment (for Group 1) or 12 months prior to enrollment (for Group 2).
- Patient must not have a previous history of a stroke.
- Patient must not be taking any medications that might confound the study results (anabolic agents (such as androgen, androgen precursor, rhGH) in the 6 months prior to enrollment; corticosteroids (other than nasal) in the 6 months prior to enrollment; or finasteride or dutasteride).
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 |
|---|---|---|
| Protein restrictive dietTo begin a reduced protein diet | Other | Protein restrictive diet |
Primary outcome
Group1--Expression of genes and proteins of the PI-3K/Akt/mTOR pathway. Group 2--PSA values obtained every three months
Time frame: group 1- (4-6 weeks), group 2 -(52 weeks)
The investigators will be looking at the increase or decrease of PSA values between control and protein restricted diet participants obtained for the length of study.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Mar 2021.
- Background: PubMed 27346343Fontana L, Cummings NE, Arriola Apelo SI, Neuman JC, Kasza I, Schmidt BA, Cava E, Spelta F, Tosti V, Syed FA, Baar EL, Veronese N, Cottrell SE, Fenske RJ, Bertozzi B, Brar HK, Pietka T, Bullock AD, Figenshau RS, Andriole GL, Merrins MJ, Alexander CM, Kimple ME, Lamming DW. Decreased Consumption of Branched-Chain Amino Acids Improves Metabolic Health. Cell Rep. 2016 Jul 12;16(2):520-530. doi: 10.1016/j.celrep.2016.05.092. Epub 2016 Jun 23.
- Background: PubMed 30385734Trevino-Villarreal JH, Reynolds JS, Bartelt A, Langston PK, MacArthur MR, Arduini A, Tosti V, Veronese N, Bertozzi B, Brace LE, Mejia P, Trocha K, Kajitani GS, Longchamp A, Harputlugil E, Gathungu R, Bird SS, Bullock AD, Figenshau RS, Andriole GL, Thompson A, Heeren J, Ozaki CK, Kristal BS, Fontana L, Mitchell JR. Dietary protein restriction reduces circulating VLDL triglyceride levels via CREBH-APOA5-dependent and -independent mechanisms. JCI Insight. 2018 Nov 2;3(21):e99470. doi: 10.1172/jci.insight.99470.
- Background: PubMed 28921841Eitan E, Tosti V, Suire CN, Cava E, Berkowitz S, Bertozzi B, Raefsky SM, Veronese N, Spangler R, Spelta F, Mustapic M, Kapogiannis D, Mattson MP, Fontana L. In a randomized trial in prostate cancer patients, dietary protein restriction modifies markers of leptin and insulin signaling in plasma extracellular vesicles. Aging Cell. 2017 Dec;16(6):1430-1433. doi: 10.1111/acel.12657. Epub 2017 Sep 17.
- Individual participant dataSharing planned: No. Plan to publish
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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.
Luigi Fontana, MD,PhD principal investigator
Washington University School of Medicine
Valeria Tosti, MD principal investigator
Washington University School of Medicine
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Protein restrictive diet in people with Prostate Cancer, run by Washington University School of Medicine 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 16 inclusion and 8 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 Mar 2021. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Group1--Expression of genes and proteins of the PI-3K/Akt/mTOR pathway. Group 2--PSA values obtained every three months (time frame: group 1- (4-6 weeks), group 2 -(52 weeks)). 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 NCT01692587, which also lists 3 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 Mar 2021.