Vitamin D Deficiency Clinical Trial
Official title:
A Randomized Double Blinded Trial of Vitamin A Supplementation in Allogeneic Stem Cell Transplantation.
The investigators hypothesize that single oral high dose supplementation with vitamin A will reduce the incidence of moderate-severe chronic graft-versus-host disease (GVHD) compared with placebo.
Hematopoietic stem cell transplantation (HSCT) is an effective treatment strategy for many malignancies, marrow failure syndromes, and immune deficiencies in children, adolescents, and adults. Vitamin A and its derivatives regulate growth and differentiation of intestinal cells, and vitamin A deficiency is associated with increased susceptibility to infection in both human and animal models. The investigators' preliminary data suggest lower vitamin A levels were associated with an increased incidence of gastrointestinal graft versus host disease (GI GVHD) in patients undergoing HSCT. This study is a randomized double blinded comparison of vitamin A supplementation comparing a single large dose of vitamin A with a placebo. ;
Status | Clinical Trial | Phase | |
---|---|---|---|
Active, not recruiting |
NCT04244474 -
Effect of Vitamin D Supplementation on Improvement of Pneumonic Children
|
Phase 1/Phase 2 | |
Recruiting |
NCT05459298 -
ViDES Trial (Vitamin D Extra Supplementation)
|
N/A | |
Suspended |
NCT03652987 -
Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
|
||
Completed |
NCT04476511 -
The Efficacy and the Safety of Vitamin D3 30,000 IU for Loading Dose Schedules
|
Phase 3 | |
Completed |
NCT03920150 -
Vitamin D 24'000 IU for Oral Intermittent Supplementation
|
Phase 3 | |
Completed |
NCT03264625 -
The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis
|
Phase 2 | |
Completed |
NCT04183257 -
Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics
|
Phase 4 | |
Recruiting |
NCT05084248 -
Vitamin D Deficiency in Adults Following a Major Burn Injury
|
Phase 4 | |
Completed |
NCT05506696 -
Vitamin D Supplementation Study
|
N/A | |
Completed |
NCT00092066 -
A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227)
|
Phase 3 | |
Completed |
NCT03234218 -
Vitamin D Levels in Liver Transplantation Recipients Prospective Observational Study
|
||
Completed |
NCT03203382 -
Corneal Nerve Structure in Sjogren's
|
||
Completed |
NCT02714361 -
A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women
|
N/A | |
Completed |
NCT02906319 -
Vitamin D and HbA1c Levels in Diabetic Patients With CKD
|
N/A | |
Completed |
NCT02118129 -
Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
|
N/A | |
Completed |
NCT02187146 -
The Effects of Serum Vitamin D and IVF Outcome
|
N/A | |
Not yet recruiting |
NCT01419821 -
Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5
|
N/A | |
Completed |
NCT02275650 -
The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter
|
N/A | |
Completed |
NCT01688102 -
The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid Profile
|
N/A | |
Completed |
NCT01651000 -
Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
|
Phase 3 |