for people ages 7-17 (full criteria)
at San Francisco, California and other locations
study started
estimated completion:



A series of N-of-1 trials will be used to determine the effectiveness of a specific carbohydrate diet (SCD) versus a modified SCD in patients in reducing symptoms and inflammatory burden at both the individual and population level. This is a three-year study. The study staff will recruit 120 patients (goal sample size of 100, accounting for attrition) across up to 12 sites in patients aged 7-17 with mild to moderate disease activity.

Official Title

Using Single Subject (N-of-1) Designs to Answer Patient-Identified Research Questions--Aim 1: Personalized Research on Diet in Ulcerative Colitis and Crohn's Disease


Inflammatory Bowel Diseases Crohn Disease Ulcerative Colitis Colitis Ulcer Colitis, Ulcerative Specific Carbohydrate Diet (SCD) Modified Specific Carbohydrate Diet (MSCD) Specific Carbohydrate Diet (First) Modified Specific Carbohydrate Diet (First)


You can join if…

Open to people ages 7-17

  • Diagnosis of Crohn's Disease (CD) or ulcerative colitis (UC) or Indeterminate colitis(IC)
  • Age 7-17 years
  • Enrolled in the ImproveCareNow (ICN2) registry
  • Mild to moderate disease activity as measured by a short Pediatric Crohn's Disease Activity Index (SPCDAI) score of 15-45 or Pediatric Ulcerative Colitis Activity Index(PUCAI) score of 10-60 at baseline; and
  • Evidence of acute inflammation and/or elevated acute phase reactant as measured by Fecal calprotectin 2 times the upper limit of normal, CRP 1.25 times the upper limit of normal, or ESR 1.25 times the upper limit of normal (based on local reference ranges) within 8 weeks of enrollment.

You CAN'T join if...

Complex and Unstable IBD:

  • Currently or within the past 9 months has had an intra-abdominal abscess, fistula,stricturing CD, or ostomy
  • Ever had history of full colectomy
  • Hospitalization or surgery planned within 3 months
  • Ongoing active gastrointestinal infection
  • Severe Malnutrition (BMI less than 5th percentile)
  • Recent medication changes including:
  • Thiopurines, natalizumab, or methotrexate started within 8 weeks prior to enrollment
  • Anti TNF (infliximab, adalimumab) started within 8 weeks prior to enrollment
  • Vedolizumab started within 16 weeks prior to enrollment
  • Increase in corticosteroids within 4 weeks of screening or have dose >20 mg prednisone or equivalent

Evidence of Other Complicating Medical Issues:

  • Other serious medical conditions, such as neurological, liver, kidney, or systemic disease
  • Serious psychological or psychiatric conditions such as eating disorders or self-harm
  • Pregnancy
  • Tobacco, alcohol, or illicit drug abuse

Inability to Complete the Protocol

  • Non-English speaking participants
  • On SCD or modified SCD anytime within 8 weeks of enrollment
  • Participants on a vegan diet
  • Lack of smart phone and data plan for participating caregiver
  • Participating in another concurrent intervention study


  • University of California San Francisco Benioff Children's Hospita; accepting new patients
    San Francisco California 94158 United States
  • Lucile Packard Children's Hospital accepting new patients
    Palo Alto California 94304 United States


accepting new patients
Start Date
Completion Date
Children's Hospital Medical Center, Cincinnati
Study Type
Last Updated