the Effect of Vitamin D in Crohn's Disease

Study Purpose

To evaluate the efficacy and safety of 12-week goal-directed therapy in the treatment of refractory inflammatory patients, and to initially explore treatment options. Patients with potential risk factors for recurrence after surgery for Crohn's disease and a serum 25(OH)D concentration <75 nmol/L were prescribed oral liquid vitamin D supplementation over 12 weeks using a specific protocol with dose adjusted 4-weekly to aim for a target level of 100-125 nmol/L.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 20 Years - 60 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

1. Clinical diagnosis of Crohn's Disease. 2. Must be able to swallow tablets. 3. Have certain factors increase the risk of surgery in CD. include:
  • - current smoking.
  • - fistulizing and stricturing disease behaviour.
  • - early steroid use (medical need for steroids for treatment of first flare) - disease in the end of the small bowel (i.e. ileum) - disease in the middle part of the small bowel (i.e. jejunum), and.
  • - young age at the time of the diagnosis.

Exclusion Criteria:

1. Other serious gastrointestinal diseases. 2. pregnancy. 3. hypercalcemia. 4. hyperparathyroidism. 5. chronic kidney disease and cardiovascular disease

Trial Details

Trial ID:

This trial id was obtained from, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Early Phase 1
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Nanjing University School of Medicine
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Yousheng Li, Doctor
Principal Investigator Affiliation Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Not yet recruiting

The disease, disorder, syndrome, illness, or injury that is being studied.

Vitamin D Deficiency, Crohn Disease
Additional Details

The patients received oral liquid cholecalciferol supplementation (OsteVit DTM, Key Pharmaceuticals, Macquarie Park, NSW, Australia), supplied in 50 mL bottles (5000 units in 1 mL). A target 25(OH)D of 100-125 nmol/L was planned and the dose titrated 4-weekly. Patients were evaluated at week 0 (screening visit), then 2- weekly until week 12, and at a follow-up visit at week 16. Key study endpoints were change in total 25(OH)D and attainment of level of 100e125 nmol/L. Intestinal inflammation was assessed via clinical disease activity (CDAI), faecal calprotectin (Calprotectin ELISA, Buhlmann, Basel, Switzerland), and circulating inflammatory markers (platelet count, serum albumin and C- reactive protein). Safety was assessed by direct questioning and 24- h urinary calcium excretion . Compliance was checked by dosing diaries completed by patients and measuring remaining cholecalciferol in bottles of the study drug. Statistical analyses were performed using SPSS v20 (IBM Corporation, 2011) and GraphPad Prism v5.04 (Graphpad software, 2010). Dependent and independent samples t-tests, analysis of variance (ANOVA) and KruskaleWallis tests were used where appropriate. Associations with rise in 25(OH)D were examined by bivariate correlations. A p-value of 0.05 was considered statistically significant.

Arms & Interventions


Placebo Comparator: Control group

The physical properties such as appearance, size, color, dosage form, weight, taste and odor of placebo should be as much as possible as the test drug, but should not contain the Vitamin D (such as tablets containing lactose).

Experimental: Vitamin D group

Liquid cholecalciferol supplementation (OsteVit DTM, Key Pharmaceuticals, Macquarie Park, NSW, Australia), supplied in 50 mL bottles (5000 units in 1 mL)


Drug: - Vitamin D

patients with refractory Crohn disease and a serum 25(OH)D concentration <75 nmol/L were prescribed oral liquid vitamin D supplementation over 12 weeks using a specific protocol with dose adjusted 4-weekly to aim for a target level of 100e125 nmol/L.

Drug: - Placebo oral capsule

the capsule contain nothing

Contact Information

This trial has no sites locations listed at this time. If you are interested in learning more, you can contact the trial's primary contact:

Lei Zheng, doctor


For additional contact information, you can also visit the trial on

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