NCT04331639 · Boston Children's Hospital
High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy
What this study is about
The investigators will be administering taken by mouth high dose interval vitamin D, concurrently when participants are receiving biologic therapy for their inflammatory bowel disease. The investigators will be collecting some additional bloodwork and questionnaires at the time of participants infusions.
View original scientific description
The investigators will be administering oral high dose interval vitamin D, concurrently when participants are receiving biologic therapy for their inflammatory bowel disease. The investigators will be collecting some additional bloodwork and questionnaires at the time of participants infusions.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Existing diagnosis of IBD, including Crohn disease, ulcerative colitis, and indeterminate colitis
- Receiving treatment with Infliximab or Vedolizumab every 4-8 weeks
- Age 5-25 years old, at study entry
- Measured serum level of 25-OHD of less than 40 ng/mL in the last 4-8 weeks and no changes in vitamin D supplementation in the interim. Of note, 25-OHD levels are evaluated routinely as part of standard clinical care for IBD
Exclusion criteria
- History of any underlying kidney disease
- History of preexisting liver disease
- History of granulomatous disease
- Inability to take oral vitamin D3 as a pill
- History of hypercalcemia or hypercalciuria
- Currently, or within the past 3 months, taking an anti-epileptic medication or Lasix
Where
- Boston, Massachusetts
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Mar 3, 2025 · Source of record for eligibility and locations