Clinical trials: Vitamin D Deficiency, completed
Radiologically Isolated Syndrome, Epstein-Barr Virus Infections
Environmental Risk Factors in Multiple Sclerosis Development: Epidemiological Study of EBV Infection and Vitamin D Deficiency in RIS Patients
This is an ancillary study using samples collected in the ProBioRIS cohort (NCT06395662). The aim of the project is to highlight new biomarker candidates to assess the risk of conversion to clinically definite multiple sclerosis…
- Trial name
- RIS - EBVD (NCT07256431)
- Testing
- Antibiody titration
- Where
- France
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de Nīmes
Vitamin D Deficiency, Secondary Hyperparathyroidism
Vitamin D Status in Males in Jerusalem Area and Its Correlation to Parathyroid Hormone (PTH) Level and Bone Mineral Density
Because of its high sun exposure, Israel was traditionally supposed to be protected from vitamin D deficiency, and the country food products hardly contain vitamin D supplements.
- Conditions
- Vitamin D Deficiency, Secondary Hyperparathyroidism, Osteomalacia
- Trial name
- NCT01025128
- Testing
- 25 OH vitamin D
- Where
- Israel
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Clalit Health Services
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
Vitamin D Deficiency
Physical Exercise and Diet Management in Vitamin D Deficient Females
The purpose of this study was to determine if home based physical exercises protocol and Diet management has an effect on functional performance and depression level related to vitamin D deficiency in females.
- Trial name
- NCT06114381
- Testing
- Home Based Physical Exercise, Vitamin D3 Supplements, Diet Management
- Where
- Saudi Arabia
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Badr University
Vitamin D Deficiency
The Effect of Vitamin D Supplements on Vitamin D Status, Cardiometabolic Health and Immune Defense in Danish Children
The main purpose of this study is to investigate whether and in which doses vitamin D intake is needed in order to maintain an adequate vitamin D status in 4-8 year-old Danish children during wintertime.
- Trial name
- ODIN Junior (NCT02145195)
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- Denmark
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
Sickle Cell Disease, Vitamin D Deficiency
High Dose Vitamin D Supplementation in Children With Sickle Cell Disease
Suboptimal vitamin D status is well reported in sickle cell disease (SCD) patients and associated with a negative impact on health-related quality of life (HRQL).
- Conditions
- Sickle Cell Disease, Vitamin D Deficiency, Health Related Quality of Life, Hand Grip Strength
- Trial name
- NCT06274203
- Testing
- Vitamin D3
- Where
- Egypt
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Zagazig University
Vitamin D Deficiency
Vitamin D During Pregnancy
Vitamin D insufficiency is common globally. Pregnant women, who need an increased supply of this vitamin for the proper development of the fetus, are a significant risk group.
- Trial name
- NCT01589783
- Testing
- completion of a questionnaire, Blood draw
- Where
- Israel
- Volunteers
- 764 people, healthy volunteers welcome
- Sponsor
- Hadassah Medical Organization
Vitamin D Deficiency
The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid Profile
Participants in this study will be randomized to receive either oral vitamin D pills OR ultraviolet light treatment. The investigators will compare how these two methods of raising vitamin D levels will affect cholesterol levels.
- Trial name
- NCT01688102
- Testing
- Oral Vitamin D3, Ultraviolet Light
- Where
- United States
- Volunteers
- 118 people, healthy volunteers welcome
- Sponsor
- Rockefeller University
Hypophosphatasia, Bone Disease
Non-interventional Substudy of ALX-HPP-502 to Assess Natural History of Patients With Juvenile-onset HPP Who Served as Historical Controls in ENB-006-09
The purpose of this study is to characterize the natural history of HPP in patients with Juvenile-onset HPP who served as historical controls in ENB-006-09.
- Trial name
- NCT02235493
- Testing
- Retrospective Case Only
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Cardiovascular Diseases, Vitamin D Deficiency
The Effect of Vitamin D Statues on Endothelial Function
In the United States, cardiovascular disease causes over one-third of all deaths and vitamin D deficiency is an epidemic. An increasing body of data suggests that low vitamin D status adversely impacts the cardiovascular system.
- Trial name
- CVD Cookie (NCT01049048)
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Vitamin D Deficiency, Parkinson Disease
12 Weeks Vitamin D Supplementation and Physical Activity in PD Patients With DBS
Parkinson's disease (PD) is the second most frequently appearing neurodegenerative disease. It is a progressive disease of the central nervous system (CNS) and affects around 1% of people over 60 years old.
- Trial name
- NCT04768023
- Testing
- Juvit D3
- Where
- Poland
- Volunteers
- 50 people
- Sponsor
- Medical University of Gdansk
X-linked Hypophosphatemia
Anti-FGF23 (Burosumab) in Adult Patients With XLH
X-linked hypophosphatemia (XLH) rare genetic disorder due by inactivating mutations in the PHEX gene leading to increased levels in FGF-23.
- Trial name
- BurGER (NCT04695860)
- Testing
- Burosumab
- Where
- Germany
- Volunteers
- 36 people
- Sponsor
- Wuerzburg University Hospital
Chronic Kidney Disease, End Stage Kidney Disease
Pathogenesis of Compromised Bone Quality and Mechanics in Chronic Kidney Disease
Kidney disease patients have a variety of bone disorders that result in bone loss and fractures. The mechanisms of these bone disorders are not clear but may be related to abnormal modification of a bone protein known as…
- Conditions
- Chronic Kidney Disease, End Stage Kidney Disease, Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy
- Trial name
- NCT03626246
- Testing
- Kidney disease
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Columbia University
Peripheral Arterial Disease
Pilot Study of Vitamin D Screening Use in Peripheral Arterial Disease Patient Over Maximum Distance Walking
The prevalence of peripheral arterial disease (PAD) is greater than 15%. PAD is associated with an increased risk of cardiovascular death, coronary heart disease and stroke, with a mortality rate of 5% per year.
- Trial name
- First-BLINDOS (NCT03615833)
- Testing
- Cholecalciferol
- Where
- France
- Volunteers
- 27 people
- Sponsor
- University Hospital, Angers
Hypophosphatasia (HPP)
A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)
This study aims to characterize the natural history of patients with severe perinatal or infantile onset HPP.
- Trial name
- NCT01419028
- Where
- 12 sites in United States, Australia and 5 more
- Volunteers
- 48 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Hypocalcemia
Effect of Vitamin D Supplement on Disease Activity in SLE
To study the effect of vitamin D supplementation on disease activity of SLE ( SLEDAI-2K ) and IL-6 level
- Conditions
- Vitamin D Deficiency, Hypocalcemia, Hyperparathyroidism, Systemic Lupus Erythematosus (Disorder)
- Trial name
- NCT05260255
- Testing
- vitamin D2 ( calciferol )
- Where
- Thailand
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Department of Medical Services Ministry of Public Health of Thailand
Vitamin D Deficiency in Older Persons
Daily Vitamin D Supplementation Compared to a Loading Dose and Monthly Supplementation in Elderly Nursing Home Residents
Vitamin D deficiency is common in older persons, in particular in residents of nursing homes. This is mainly explained by the fact that older persons do not often go outside in the sunshine.
- Trial name
- VIDIV (NCT01168544)
- Testing
- loading dose Vitamin D and 50.000 IU vit D3/month, loading dose and 25.000 IU vit D3/month, Vitamin D 800 IU /day
- Where
- Netherlands
- Volunteers
- 160 people
- Sponsor
- Rijnstate Hospital
Vitamin D Deficiency
Vitamin D Intervention Trial in Healthy Chinese
To determine the dose-response between the doses of vitamin D3 supplements and raised serum levels of 25(OH)D and also the dose of vitamin D3 required to achieve circulating 25(OH)D ≥ 75 nmol/L;
- Trial name
- NCT01817036
- Testing
- Vitamin D
- Where
- China
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Chinese Academy of Sciences
Vitamin D Deficiency
The Influence of Food Matrix Delivery System on the Bioavailability of Vitamin D3
This study investigates the influence of different food matrices on the bioavailability of vitamin D. Although most vitamin D comes from skin synthesis in response to sun exposure, dietary intake is also important - especially…
- Trial name
- DFORT (NCT03783273)
- Testing
- Vitamin D3, Whey protein-complex, Water
- Where
- Denmark
- Volunteers
- 30 people
- Sponsor
- University of Aarhus
Infant, Very Low Birth Weight, Calcium Deficiency
Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2
This study is to determine the amount of vitamin D required for a very low birth weight infant to reach vitamin D sufficiency and achieve optimal calcium health and bone growth.
- Conditions
- Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
- Trial name
- NCT01363167
- Testing
- 400 IU Cholecalciferol- Vitamin D Daily
- Where
- 2 sites in United States
- Volunteers
- 68 people
- Sponsor
- Medical University of South Carolina