NCT01926730

Brief Summary

The proposed study is a randomized controlled trial of a limited restriction diet compared to a regular diet among patients with Crohn's disease (CD) in remission. At baseline, patients will complete a semi-quantitative food frequency questionnaire assessing usual dietary patterns over the preceding month. Disease activity will be assessed with the abbreviated Crohn's Disease Activity Index (aCDAI)59. Self-reported disease status will be assessed during follow-up using an internet-based questionnaire. Repeat assessment of adherence to the study diets will be assessed with food frequency questionnaires (FFQs) administered after 20 weeks. Follow-up duration will be for 48 weeks. Statistical analysis will compare the time to relapse using Cox regression for patients in the two study arms. In the exploratory aim, we will compare outcomes among patients in the highest tertile for other food items and nutrients to those in the lowest tertile based on self-reported usual dietary patterns at baseline. Thus, the study population will be analyzed both as a randomized controlled trial and as a prospective cohort study.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
216

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Nov 2013

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 18, 2013

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 21, 2013

Completed
2 months until next milestone

Study Start

First participant enrolled

November 1, 2013

Completed
2.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2016

Completed
Last Updated

February 14, 2017

Status Verified

February 1, 2017

Enrollment Period

2.6 years

First QC Date

August 18, 2013

Last Update Submit

February 13, 2017

Conditions

Outcome Measures

Primary Outcomes (1)

  • Relapse of Crohn's Disease (CD)

    Relapse of CD is defined as an increase in the aCDAI by \>=60 points and to \>150. Additionally, undergoing CD surgery or starting any new CD medication (steroids, mesalamine, azathioprine, methotrexate, anti-Tumor Necrosis Factor α (anti-TNF), anti-α4) for the treatment of CD symptoms during the interval between two visits will be considered to have identified a clinical relapse.

    Every 8 weeks during the 48 week study period

Study Arms (2)

Usual diet

NO INTERVENTION

Patients will follow a usual diet and consume at least 16 oz of water per day

Restriction diet

EXPERIMENTAL

Participants will follow a diet that limits intake of selected food items. Patients will consume at least 16 oz of water per day.

Other: Restriction diet

Interventions

Selected food items will be limited in the participants diet

Restriction diet

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients must have an established diagnosis of CD.
  • All patients must be in clinical remission at the time of entry into the study. Remission is defined as an aCDAI of less than 150.

You may not qualify if:

  • Inflammatory bowel disease (IBD) unspecified / Indeterminate colitis
  • Total or sub-total colectomy, ileostomy, or colostomy
  • Unable to read and speak English
  • No internet access
  • Steroids other than budesonide ≤6mg/day with the prior two weeks
  • Perianal fistula or abscess with more than scant drainage
  • Age less than 18 years
  • Pregnant or breastfeeding women
  • Unwilling to follow the study diet

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

Location

MeSH Terms

Conditions

Crohn Disease

Condition Hierarchy (Ancestors)

Inflammatory Bowel DiseasesGastroenteritisGastrointestinal DiseasesDigestive System DiseasesIntestinal Diseases

Study Officials

  • James D Lewis, MD, MSCE

    University of Pennsylvania

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 18, 2013

First Posted

August 21, 2013

Study Start

November 1, 2013

Primary Completion

June 1, 2016

Study Completion

June 1, 2016

Last Updated

February 14, 2017

Record last verified: 2017-02

Locations