Clinical trials: Vitamin D
Implant Site Reaction
Perioperative Oral Vitamin D3 Supplementation on Implant Osseointegration
The number of patients treated in Implantology at Nantes University Hospital is 400 per year. This pilot study aims to demonstrate the efficacy of a 6-month oral cholecalciferol supplementation on osseointegration in patients…
- Trial name
- OSIVID (NCT06776640)
- Where
- France
- Volunteers
- 60 people
- Sponsor
- Nantes University Hospital
Type 2 Diabetes
the Effect of Vitamin D on the Serum Thioredoxin, TBP-2, Thioredoxin Reductase, Gene Expression of TBP-2 in Patients With Type II Diabetes
The aim of this study is the comparision between the effects of vitamin D or placebo supplementation for 2 months in serum level of thioredoxin, TBP-2 and thioredoxin reductase activity in patients with type 2 diabetes
- Trial name
- NCT01876563
- Testing
- vitamin D
- Where
- 2 sites in Iran
- Volunteers
- 30 people
- Sponsor
- Tehran University of Medical Sciences
Lymphoma
S8947-9800-9911-0016A Vitamin D Insufficiency in Determining Prognosis in Patients With Newly Diagnosed Follicular Lymphoma
RATIONALE: Studying samples of serum from patients with cancer in the laboratory may help doctors identify and learn more biomarkers related to cancer. It may also help doctors predict how well patients will respond to treatment.
- Trial name
- NCT01131221
- Testing
- laboratory biomarker analysis
- Volunteers
- 196 people
- Sponsor
- SWOG Cancer Research Network
25-hydroxyvitamin D Concentration (Vitamin D Status)
D-Light Intervention
Vitamin D insufficiency has become a global concern, with low vitamin D status associated with bone disorders, cardiovascular disease and certain cancers.
- Trial name
- D-Light (NCT02495584)
- Testing
- Fortified milk (10µg vitamin D3), 10µg vitamin D3 supplement
- Where
- United Kingdom
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- University of Ulster
CKD - Chronic Kidney Disease
Association Between Chronic Kidney Disease Stage and Circulating FGF23 Cleavage Intensity in Patients With Chronic Kidney Disease
This cross-sectional proof-of-concept study aims to investigate the relationship between chronic kidney disease (CKD) severity and circulating FGF23 (fibroblast growth factor 23) cleavage intensity estimated by the iFGF23/cFGF23…
- Trial name
- CLIFF (NCT07676526)
- Testing
- Blood sampling and biomarker assessment
- Where
- France
- Volunteers
- 80 people
- Sponsor
- Centre Hospitalier Universitaire de Saint Etienne
Autism
Influence of Vitamin D Deficiency on the Development of Autism
The investigators wish to study the effect of Vitamin D on the development of autism in children. The investigators will also investigate the environmental and genetic influences on the level of Vitamin D in children with autism.
- Trial name
- NCT02222311
- Testing
- Blood Samples
- Where
- Israel
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Hillel Yaffe Medical Center
Insulin Resistance
Vitamin D Supplementation and Glycemic Outcomes
The investigators examined the effect of vitamin D supplementation on glucose homeostasis and metabolic markers in healthy normal weight and overweight young subjects and healthy normal-weight and overweight elderly subjects…
- Trial name
- NCT02942732
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Université d'Auvergne
Coronavirus Disease 2019 (COVID-19)
Increased Risk of Severe Coronavirus Disease 2019 in Patients With Vitamin D Deficiency
In this prospective observational study we aim to study the association of vitamin D deficiency with adverse clinical outcomes in patients infected with Coronavirus disease 2019
- Trial name
- COVIT-D (NCT04403932)
- Where
- Spain
- Volunteers
- 300 people
- Sponsor
- Hospital San Carlos, Madrid
Eye Health, Vision
The Effects of VisionPure™ on Indices of Vision Health and Cognitive Function
VisionPure™ is a softgel dietary supplement containing fish oil, lutein, zeaxanthin, and vitamin D. The intent of the VisionPure product is to assist in maintaining eye and cognitive health while helping to provide protection…
- Conditions
- Eye Health, Vision, Cognitive Function
- Trial name
- NCT05533658
- Testing
- VisionPure Dietary Supplement
- Where
- 3 sites in United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Applied Science & Performance Institute
Primary Prevention of Prostate Cancer
Prostate Cancer Prevention Trial With Quercetin and Genistein
The aim of the randomized controlled double-blind crossover trial is to evaluate the effectiveness of two dietary supplements containing polyphenolic phytochemicals (isoflavonoid genistein and flavonoid quercetin) in comparison…
- Trial name
- QUERGEN (NCT01538316)
- Testing
- Quercetin supplement, Genistein supplement
- Where
- 2 sites in Germany
- Volunteers
- 60 people
- Sponsor
- University of Hohenheim
Vitamin D Deficiency, Stem Cell Transplant Complications
A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT
Research has suggested that children with sufficient vitamin D levels undergoing hematopoietic stem cell transplant (HSCT) have improved outcomes, including lower incidences of infection and graft-versus-host disease (GVHD), as…
- Conditions
- Vitamin D Deficiency, Stem Cell Transplant Complications, Pediatric Cancer, Blood Disorder
- Trial name
- NCT03176849
- Testing
- Vitamin D3, Standard Vitamin D3 Supplementation
- Where
- United States
- Volunteers
- 49 people
- Sponsor
- Phoenix Children's Hospital
Life Style Modification, Childhood Obesity
Effects of Omega-3 Supplementation on Nutritional Status and Physical Activity of Obese Children
Omega-3 Long-Chain Polyunsaturated Fatty Acids has potential as a supplement that can accelerate the effects of a weight management program in children.
- Trial name
- NCT04156971
- Testing
- Omega 3, stage-based lifestyle modification intervention
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Universiti Putra Malaysia
Psoriatic Arthritis
Effect of Secukinumab in the Treatment of Psoriatic Arthritis
The investigators propose an open label pragmatic clinical and laboratory study designed to investigate, in detail, the clinical and molecular effects of Interleukin 17 (IL-17) and inhibition of IL-17 with secukinumab, on…
- Trial name
- SATURN (NCT02854163)
- Testing
- Secukinumab
- Where
- United Kingdom
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Liverpool
Anterior Cruciate Ligament Injuries, Quadriceps Muscle Atrophy
Vitamin D to Improve Quadricep Muscle Strength
Quadriceps muscle strength is one of the key determinants for patients to fulfill the Return-to-Play (RTP) criteria after an anterior cruciate ligament reconstruction (ACLR), in which the muscle size is directly linked to muscle…
- Conditions
- Anterior Cruciate Ligament Injuries, Quadriceps Muscle Atrophy, Anterior Cruciate Ligament Rupture, Anterior Cruciate Ligament Tear
- Trial name
- NCT05174611
- Testing
- Vitamin D3
- Where
- Hong Kong
- Volunteers
- 60 people
- Sponsor
- Chinese University of Hong Kong
Obesity, Vitamin D3 Deficiency
Vitamins D and K Effects on Vascular Function in Obese Adults.
A prospective, randomized, placebo-controlled, double-blind study that aims to evaluate the effects of combined vitamin D3 and K2-MK7 supplementation on vascular function, sympathetic tone, metabolic biomarkers and inflammatory…
- Trial name
- NCT05689632
- Testing
- Vitamin D3 + K2-MK7, Vitamin D3
- Where
- Brazil
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Hospital Universitario Pedro Ernesto
Gestational Diabetes
High Dose Cholecalciferol to Reduce the Incidence of Gestational Diabetes in High Risk Pregnant Women
Demonstrate dose-dependent relationship between vitamin D supplementation and rates of gestational diabetes.
- Trial name
- NCT03037593
- Testing
- 4000 IU vitamin D3
- Where
- United States
- Sponsor
- University of Minnesota
Vitamin D Deficiency, Hypovitaminosis A
A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice
The goal of this investigator-initiated study is to determine whether the fortification of orange juice with vitamin D, vitamin A, and vitamin E will enhance the vitamin D, vitamin A, and vitamin E status children ages 6-10 that…
- Conditions
- Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
- Trial name
- NCT01909063
- Testing
- Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Boston University
Chronic Kidney Disease Mineral and Bone Disorder
The Effect of REgulation of PArathyroId hoRmone in Patients With Chronic Kidney Disease to Investigate the Change in Bone Mineral Density
The prevalence of chronic kidney disease (CKD) in the adult population is estimated to 10%. CKD increases risk of bone fractures, cardiovascular disease and death.
- Trial name
- REPAIR-CKD (NCT07171216)
- Testing
- Treat to target
- Where
- Denmark
- Volunteers
- 70 people
- Sponsor
- Herlev Hospital
Non Small Cell Lung Cancer
Phase I/II Calcitriol in Lung Cancer
According to the Cancer Atlas, lung cancer remains the major cancer among the 10.9 million new cases of cancer diagnosed annually worldwide.
- Trial name
- NCT00794547
- Testing
- Calcitriol
- Where
- 4 sites in United States
- Volunteers
- 34 people
- Sponsor
- University of Michigan Rogel Cancer Center
Vitamin D Deficiency
Optimizing Vitamin D Nutrition in Healthy Adults
The purpose of this study is to determine the average dosage of oral vitamin D supplementation to maintain optimal vitamin D levels in the body and to see if there are differences in the response to oral vitamin D supplementation…
- Trial name
- NCT00327847
- Testing
- Oral Vitamin D Supplementation
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Winthrop University Hospital