Clinical trials: Vitamin Deficiencies
Renal Failure, Kidney Donors
BOne Dysfunction in Donor NEphrectomieS
Most dialysis patients die from vascular disease, which is statistically associated with changes related to chronic kidney disease associated mineral bone disorder (CKD-MBD)3-9.
- Trial name
- BONES (NCT04674397)
- Testing
- Radioisotope GFR test
- Where
- United Kingdom
- Volunteers
- 34 people
- Sponsor
- Manchester University NHS Foundation Trust
Vitamin D Deficiency
OASIS Study: Vitamin D Deficiency Prevention Among Older Adults in Ireland
Vitamin D deficiency is common. It is caused by limited sun availability together with a low supply of vitamin D in the food system. There is a high prevalence of low vitamin D status around the world.
- Trial name
- OASIS (NCT06705582)
- Testing
- Fortified Bread, Unfortified bread
- Where
- 2 sites in Ireland
- Volunteers
- 117 people, healthy volunteers welcome
- Sponsor
- University College Cork
Hypovitaminosis, Vitamin A Deficiency
Impact of Maternal Supplementation With Dual Megadose of Vitamin A
The purpose of this study is to evaluate the effect of maternal supplementation with 400,000 IU of oral retinol palmitate in the post-partum, the nutritional situation of the binomial mother-child, on growth and morbidity of…
- Trial name
- NCT00742937
- Testing
- vitamin A
- Where
- Brazil
- Volunteers
- 239 people, healthy volunteers welcome
- Sponsor
- Instituto Materno Infantil Prof. Fernando Figueira
Retinal Disease, Age-Related Macular Degeneration
Stem Cell Ophthalmology Treatment Study II
This study will evaluate the use of autologous bone marrow derived stem cells (BMSC) for the treatment of retinal and optic nerve damage or disease.
- Conditions
- Retinal Disease, Age-Related Macular Degeneration, Retinitis Pigmentosa, Stargardt Disease
- Trial name
- SCOTS2 (NCT03011541)
- Testing
- Arm 1
- Where
- 4 sites in United States, Austria and 1 more
- Volunteers
- 500 people
- Sponsor
- MD Stem Cells
X-linked Hypophosphatemia, Hypophosphatemic Rickets
X-linked Hypophosphatemia Disease Monitoring Program
The objectives of this observational study are to characterize XLH disease presentation and progression and to assess long-term effectiveness and safety of burosumab.
- Trial name
- NCT03651505
- Testing
- No intervention
- Where
- 38 sites in United States, Argentina and 4 more
- Volunteers
- 782 people
- Sponsor
- Ultragenyx Pharmaceutical Inc
Vitamin D Deficiency, Critical Illness
Cholecalciferol Supplementation in Critically Ill Patients With Severe Vitamin D Deficiency.
The purpose of the research study is to determine whether a single high dose of vitamin D is helpful in reducing critical illness related complications in intensive care patients who are having sever vitamin D deficiency.
- Trial name
- NCT02868827
- Testing
- Cholecalciferol, Milk (Nestle)
- Where
- Saudi Arabia
- Volunteers
- 127 people
- Sponsor
- King Abdullah Medical City
Vitamin C Deficiency
"Novo C Plus" Vitamin C Containing Dietary Supplement Bioavailability in Healthy Subjects
The aim of this study is to evaluate the bioavailability of "Novo C Plus" vitamin C containing dietary supplement compared to licensed vitamin C medications. The novelty of this product is the liposomal formulation.
- Trial name
- NCT02606773
- Testing
- Ascorbic Acid
- Where
- Hungary
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Semmelweis University
X-Linked Hypophosphatemia
Efficacy and Safety of Burosumab Versus Oral Phosphate and Active Vitamin D Treatment in Pediatric Patients With XLH
The primary objective of this study is to evaluate the effect of KRN23 (burosumab) therapy in improving rickets in children with XLH compared with active control (oral phosphate/active vitamin D).
- Trial name
- NCT02915705
- Testing
- burosumab, Oral Phosphate Supplement, active vitamin D
- Where
- 16 sites in United States, Australia and 5 more
- Volunteers
- 61 people
- Sponsor
- Kyowa Kirin, Inc.
Multiple Myeloma
VitD3 Supplementation in Patients With Multiple Myeloma
The goal of this clinical trial is to evaluate post-transplant immune reconstitution and lymphocyte recovery as well as the 3-year progression-free survival of patients with multiple myeloma in two treatment arms.
- Trial name
- NCT05846880
- Testing
- Lenalidomide, Maintenance Vitamin D, No maintenance Vitamin D
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- Amany Keruakous, MD, MS.
Thyroid, PD-1
Correlation Vitamin D Level to Endocrine Autoimmune Toxicity Due to Immune Checkpoint Inhibitors
The purpose of this research study is to see if the amount of vitamin D in ones blood makes it more or less likely to develop thyroid gland toxicity when being treated with immunotherapy that blocks the activity of proteins…
- Conditions
- Thyroid, PD-1, Cancer
- Trial name
- NCT04615988
- Testing
- blood draw and questionnaire completion, questionnaire completion, blood collection
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Icahn School of Medicine at Mount Sinai
Vitamin A Deficiency
Efficacy of Yellow Cassava to Improve Vitamin A Status of Kenyan School Children
The overall aim of the project is to provide proof-of-principle that biofortification of cassava with vitamin A is a viable strategy to improve vitamin A status of deficient populations.
- Trial name
- CASSAVITA (NCT01614483)
- Testing
- Yellow cassava, White cassava
- Where
- Kenya
- Volunteers
- 341 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Diabetes Mellitus, Type 2, Glucose Intolerance
Effects of Vitamin D on Beta Cell Function and Insulin Sensitivity in Pre-diabetes and Diabetes Mellitus Type 2
The purpose of this study is to evaluate if treatment with vitamin D increase beta cell function and insulin sensitivity in subjects with pre-diabetes or newly diagnosed diabetes mellitus type 2.
- Conditions
- Diabetes Mellitus, Type 2, Glucose Intolerance, Vitamin D Deficiency
- Trial name
- EVIDENS (NCT01497132)
- Testing
- Vitamin D3
- Where
- Sweden
- Volunteers
- 44 people
- Sponsor
- Karolinska Institutet
Aphthous Stomatitis
Prevention of Recurrent Aphthous Stomatitis Using Vitamins
The purpose of this research study is to find out if taking a multivitamin daily can affect the number of canker sores that people get and how long they last.
- Trial name
- NCT00527306
- Testing
- multivitamin
- Where
- United States
- Volunteers
- 160 people
- Sponsor
- UConn Health
Iron Overload, Oxidative Stress
Effects of Taking Prenatal Vitamin-mineral Supplements During Lactation on Iron Status and Markers of Oxidation
Most breastfeeding women are told by their health care provider to continue taking prenatal vitamins after they give birth. A woman's requirement for iron while breastfeeding is low, yet prenatal vitamins contain a large amount…
- Conditions
- Iron Overload, Oxidative Stress, Iron-deficiency Anemia
- Trial name
- NCT01047098
- Testing
- Iron
- Where
- United States
- Volunteers
- 114 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Vitamin D Deficiency, Osseointegration Failure of Dental Implant
Vitamin-D Insufficiency and Implants
Vitamin D is important for bone health, immune function, and inflammation, along with dental implant success. The study aimed to assess bone markers and cytokine levels in patients with and without vitamin D insufficiency to…
- Conditions
- Vitamin D Deficiency, Osseointegration Failure of Dental Implant, Peri-Implantitis
- Trial name
- NCT06452251
- Testing
- OPG, OC, RANKL, IL-10, IL-1β, Ca, TNF-α and Caspase-1 ELISA, Resonance Frequency Analysis, Periodontal clinical examination
- Where
- Turkey (Türkiye)
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Vesile Elif Toy
Vitamin D Deficiency, 25-Hydroxyvitamin D3 Deficiency, Selective
Effect of Vitamin D3 Supplementation in Children From 12 to 30 Months of Age.
Background Vitamin D (VD) is essential for calcium absorption, bone health and growth in children. In a national representative sample authors found mean serum concentration of 25-Hydroxi-Vitamin-D (25-OH-D) of 59 nmol/L, in…
- Trial name
- NCT03544671
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Instituto Nacional de Salud Publica, Mexico
Vitamin D Deficiency, Vitamin D Insufficiency
ALPCO 25(OH) Vitamin D CLIA Kit - Fresh Versus Frozen Serum and Plasma Stability Study
This study evaluates the stability of 25-hydroxyvitamin D [25(OH)D] measurements in human serum and plasma using the ALPCO 25(OH) Vitamin D CLIA Kit.
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers
- Trial name
- NCT07565064
- Testing
- ALPCO 25(OH) Vitamin D CLIA Kit
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- American Laboratory Products Company
Diabetes Type 2, Diabetic Neuropathies
High vs Low Dose Vitamin D in Patients With Diabetic Peripheral Neuropathy
Aim. To assess the effect of different doses of vitamin D supplementation on peripheral neuropathy in patients with type 2 diabetes mellitus (T2DM).
- Conditions
- Diabetes Type 2, Diabetic Neuropathies, Vitamin D Deficiency
- Trial name
- NCT04377399
- Testing
- Vitamin D
- Where
- Russia
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health
Iron Deficiency, Vitamin A Deficiency
Nutritional Status and Bouillon Use in Northern Ghana
This pilot aims to generate data that are critical for informing the design of a planned, more detailed study to evaluate the effect of multiple micronutrient (MN)-fortified bouillon cube on biomarkers of nutrient status of women…
- Conditions
- Iron Deficiency, Vitamin A Deficiency, Vitamin B 12 Deficiency, Folate Deficiency
- Trial name
- NCT04632771
- Testing
- N/A (observational study)
- Where
- Ghana
- Volunteers
- 995 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Hyperhomocysteinemia
Effects of Low-dose Complex B-vitamins on Homocysteine and Framingham Risk Score Among Chinese Elderly
The purpose of this study is to evaluate whether low dose complex B-vitamins (folic acid,vitamin B6 and vitamin B12) can lower the risk of developing hyperhomocysteinemia in an apparently healthy population with low folate/B12…
- Trial name
- NCT00755664
- Testing
- Low-dose complex B-vitamins
- Where
- China
- Volunteers
- 390 people, healthy volunteers welcome
- Sponsor
- Peking University
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