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Anal CancerNCT01170299

Low-Fiber Diet or High-Fiber Diet in Preventing Bowel Side Effects in Patients Undergoing Radiation Therapy for Gynecological Cancer, Bladder Cancer, Colorectal Cancer, or Anal Cancer

A study testing dietary intervention, laboratory biomarker analysis and gastrointestinal complications management/prevention in people with Anal Cancer and Bladder Cancer, run by Royal Marsden NHS Foundation Trust at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

RATIONALE: Fiber may lessen bowel side effects caused by radiation therapy. It is not yet known whether a high-fiber diet is more effective than a low-fiber diet in preventing bowel side effects caused by radiation therapy. Read more about this study

Who is it for?
Ages Up to 120 years
Conditions the study is for
Anal Cancer, Bladder Cancer, Cervical Cancer
What is being tested?
dietary intervention, laboratory biomarker analysis and gastrointestinal complications management/prevention
Type of treatment
Surgery or procedure
How many people
177 participants
Where
1 siteUnited Kingdom
Study dates
Oct 2009to Jan 2014
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 Up to 120 years
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

DISEASE CHARACTERISTICS:

  • Diagnosis of gynecological, urological (bladder), colorectal, or anal malignant cancer
  • Scheduled to undergo a course of radical or adjuvant pelvic radiotherapy (≥ 45 Gy)
  • Radiotherapy regimen will be delivered in daily fractions comprising approximately ≥ 25 fractions over 5-7 weeks

PATIENT CHARACTERISTICS:

  • No prior prescribed low-residue diet for a clear medical reason
  • No established wheat intolerance or celiac disease
  • No concurrent condition precluding oral nutritional intake

PRIOR CONCURRENT THERAPY:

  • No gastrointestinal stent
  • No jejunostomy, ileostomy, or colostomy
  • No concurrent participation in a study with toxicity as an endpoint

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Royal Marsden - London

    London, England, SW3 6JJ

Other trials in United Kingdom

About this study

Official title: A Randomized Controlled Trial to Investigate the Role of Low or High 'Fibre' Diets in Patients Undergoing Pelvic Radiotherapy - The Fibre Study

RATIONALE: Fiber may lessen bowel side effects caused by radiation therapy. It is not yet known whether a high-fiber diet is more effective than a low-fiber diet in preventing bowel side effects caused by radiation therapy.

PURPOSE: This randomized clinical trial is studying a high-fiber diet to see how well it works compared with a low-fiber diet in preventing bowel side effects in patients undergoing radiation therapy for gynecological cancer, bladder cancer, colorectal cancer, or anal cancer.

Read the detailed description

OBJECTIVES:

Primary

  • To compare the efficacy of a high- vs low-fiber intervention in preventing bowel toxicity in patients receiving radical pelvic radiotherapy treatment for gynecological, urological (bladder), colorectal, or anal malignancy.
  • To compare whether a high- or low-fiber intervention has any beneficial effect over no intervention (i.e., ad-libitum fiber consumption).
  • To examine the effect of a low- or high-fiber diet on gastrointestinal symptoms, measured using the IBDQ-B and Bristol Stool Chart, in patients receiving radical radiotherapy for pelvic malignancies.
  • To minimize any potential risk associated with change in fiber intake by using a controlled and gradual dietary-based intervention combined with dietetic advice.

Secondary

  • To examine the relationship between volume of irradiated bowel and onset of gastrointestinal symptoms as measured by the Bristol Stool Chart.
  • To measure percentage compliance with fiber prescription through validated dietetic techniques including the 7-day Food Diary using household measures and the 24-hour recall.

OUTLINE: Patients are stratified according to disease (gynecological vs gastrointestinal) and concomitant therapy (received vs not received). Patients are randomized to 1 of 3 treatment arms.

  • Arm I (low-fiber diet): Patients are assessed by a qualified dietitian, receive written guidance, and are counseled as to how best to meet their study fiber prescription of a low-fiber diet, comprising 'not more than' 10 g of fiber per day for up to 7 weeks.
  • Arm II (high-fiber diet): Patients are assessed by a qualified dietitian, receive written guidance, and are counseled as to how best to meet their study fiber prescription of a high-fiber diet, comprising a target of between 18 and 22 g of fiber per day for up to 7 weeks.
  • Arm III (no intervention): Patients receive advice designed to ensure they maintain their normal habitual diet for up to 7 weeks.

All patients undergo radiotherapy once daily comprising approximately 25 (or more) fractions in total to be delivered for 5-7 weeks in the absence of unacceptable toxicity.

All patients are asked to complete two 7-day Food Diaries at baseline and end of radiotherapy treatment. All patients keep a daily record of stool characteristics and frequency using the Bristol Stool Chart. Patients also complete a short 1-page weekly-cost questionnaire to assess the economic impact of symptom management. Patients in arms I and II complete several additional questions regarding the costs (if any) of adhering to their fiber prescription and the palatability of the diet.

Blood and stool samples may be collected at baseline and during study therapy for biomarker analysis.

After completion of study treatment, patients are followed up for up to 1 year.

Being tested
dietary intervention, laboratory biomarker analysis, gastrointestinal complications management/prevention, management of therapy complications, selective external radiation therapy
Keywords
radiation toxicity, gastrointestinal complications, cervical cancer, fallopian tube cancer, ovarian epithelial cancer, ovarian germ cell tumor, ovarian sarcoma, ovarian stromal cancer, uterine sarcoma, bladder cancer, colon cancer, rectal cancer, anal cancer
Medical subject headings
Anus Neoplasms, Urinary Bladder Neoplasms, Uterine Cervical Neoplasms, Colorectal Neoplasms, Fallopian Tube Neoplasms, Ovarian Neoplasms, Radiation Injuries, Sarcoma

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • dietary interventionDietary supplement

  • laboratory biomarker analysisOther

  • gastrointestinal complications management/preventionProcedure or surgery

  • management of therapy complicationsProcedure or surgery

  • selective external radiation therapyRadiation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in IBDQ-B (Inflammatory Bowel Disease Questionnaire - Bowel Subset) score between baseline (i.e., Day 1 of radiotherapy treatment) and the nadir score during treatment

Secondary outcomes (2)
  1. Incidence of toxicity, defined using the Bristol Stool Chart

  2. Costs for symptom management

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Jul 2010 (estimated)
  2. Study startOct 2009
  3. Primary completionDec 2012
  4. Study completionJan 2014

Resources

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
Supportive care
Allocation
Randomised
Masking
None (open label)
Enrolment
177 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01170299
Sponsor's protocol ID
RM-FIBRE-STUDY
Other IDs
CDR0000681693, RM-CCR-3142, EU-21053
Status last verified
Jul 2010
First submitted
24 Jul 2010
Last updated
1 Nov 2016
Results posted
No

Questions about this trial

What is this clinical trial studying?

A study testing dietary intervention, laboratory biomarker analysis and gastrointestinal complications management/prevention in people with Anal Cancer and Bladder Cancer, run by Royal Marsden NHS Foundation Trust at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

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 1 Nov 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 Kingdom. 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?

Change in IBDQ-B (Inflammatory Bowel Disease Questionnaire - Bowel Subset) score between baseline (i.e., Day 1 of radiotherapy treatment) and the nadir score during treatment. 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 1 Nov 2016.

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