Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency, Vitamin D3 Deficiency
PREDIN: Pregnancy and Vitamin D Intervention Study
Vitamin D deficiency is common among certain risk groups in Sweden, and occurs approximately in every tenth pregnant woman.The aim of the randomized double-blind controlled trial Pregnancy vitamin D intervention (PREDIN) is to…
- Conditions
- Vitamin D Deficiency, Vitamin D3 Deficiency, Pregnancy Complications
- Trial name
- PREDIN (NCT05329428)
- Testing
- Vitamin D Supplementation 20 µg/day, Vitamin D Supplementation 40 µg/day, Usual Antenatal Care
- Where
- Sweden
- Volunteers
- 105 people
- Sponsor
- Göteborg University
Obesity, Vitamin D Deficiency
Impact of Maternal Body Weight on Vitamin D Status During Pregnancy
Research shows high levels of vitamin D deficiency in pregnant women in Northern Ireland. Body composition is a determinant of vitamin D status.
- Trial name
- MO-VITD (NCT02713009)
- Testing
- Pregnancy multi-vitamin (including 10μg vitamin D3), 10μg vitamin D3
- Where
- United Kingdom
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Diabetes Complications, Vitamin D Deficiency
Myocardial Function and Vitamin D Supplementation in Diabetes.
Vitamin D deficiency is recognized as a cardiovascular risk factor. Diabetic patients are of major risk for cardiovascular diseases and typically present with Vitamin D deficiencies.
- Conditions
- Diabetes Complications, Vitamin D Deficiency, Vitamin D Supplementation, Myocardial Dysfunction
- Trial name
- VitaDD (NCT03437421)
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- France
- Volunteers
- 100 people
- Sponsor
- University of Avignon
Autosomal Dominant Hypophosphatemic Rickets
Iron Therapy for Autosomal Dominant Hypophosphatemic Rickets: A Pilot Project.
The purpose of the study is to gain a better understanding of the effect of iron on fibroblast growth factor 23 (FGF23) in the inherited disorder, autosomal dominant hypophosphatemic rickets (ADHR).
- Trial name
- NCT02233322
- Testing
- Iron
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Indiana University
Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Disease (CKD)
The CPH-MBD Cohort
Persons with chronic kidney disease (CKD) have a 3-fold increased risk of bone fracture and a 10-fold increased risk of cardiovascular disease than the general population.
- Conditions
- Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Disease (CKD), Bone Markers
- Trial name
- NCT07193056
- Where
- Denmark
- Volunteers
- 1,000 people
- Sponsor
- Herlev Hospital
PARKINSON DISEASE (Disorder)
Effect of Vitamin D3 on Brain Waves in Male Parkinson's Patients With Low Vitamin D: A qEEG Study
This is an experimental study (Interventional self-controlled trial, pretest-posttest design). The goal of this clinical trial is to evaluate the effect of vitamin D3 supplementation on quantitative EEG in male Parkinson's…
- Trial name
- NCT07096336
- Testing
- vitamin D3 capsule
- Where
- Bangladesh
- Volunteers
- 15 people
- Sponsor
- Bangladesh Medical University
HIV, Metabolic Syndrome
Incidence of HANA Conditions in HIV-infected Individuals
With the availability of effective anti-retroviral therapy, HIV-infected individuals are expected not to die of AIDS and have longer life expectancy.
- Conditions
- HIV, Metabolic Syndrome, Osteopenia, Osteoporosis
- Trial name
- NCT03483584
- Where
- Hong Kong
- Volunteers
- 215 people
- Sponsor
- Chinese University of Hong Kong
Vitamin D Deficiency
Bioefficiency of of Conventional Fish and Vitamin D Fortified Fish
The aim of this study is to investigate the bioavailability of conventional and vitamin D fortified fish as measured by the increase of the specific hydroxy form by 25(OH)D3.
- Trial name
- NCT01696526
- Testing
- vitamin D fortified fish, conventional fish
- Where
- Germany
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Ulrike Lehmann
Vitamin D Deficiency
Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVID
This is a three-arm unblinded prospective interventional study of vitamin D supplementation in participants with insufficient vitamin D at three different induction and maintenance dosing regimens (high dose, low frequency…
- Trial name
- NCT06406543
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- Armenia
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- Columbia University
Autism, Vitamin D Deficiency
Open Label Clinical Trial of Vitamin D in Children With Autism
Primary: to investigate tolerability of interventional high dose Vitamin D3 supplementation, titrated to reach serum levels near the high end of the reference range (30-100 ng/ml), in vitamin D deficient pediatric Autism Spectrum…
- Trial name
- NCT01535508
- Testing
- Liquid Vitamin D
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- University of California, San Francisco
Vitamin D Deficiency, Obesity
Effects of Vitamin D Supplementation in Obesity
Obesity is an increasing health problem with numerous metabolic complications. Vitamin D deficiency is common in obesity, and in epidemiological studies vitamin D deficiency has been linked to metabolic complications, such as…
- Trial name
- NCT01037140
- Testing
- Cholecalciferol
- Where
- Denmark
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Chronic Kidney Disease, Hyperparathyroidism, Secondary
Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
This study will evaluate the efficacy of CTAP101 Capsules versus placebo in reducing intact parathyroid hormone (iPTH) by at least 30% from pretreatment baseline; safety and tolerability of CTAP101 will also be evaluated
- Conditions
- Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
- Trial name
- NCT01651000
- Testing
- CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
- Where
- United States
- Volunteers
- 213 people
- Sponsor
- OPKO IP Holdings II, Inc.
X-linked Hypophosphatemia (XLH)
Prevention of Spontaneous Dental Abscesses in Children With X-linked Hypophosphatemia : a RCT
This study is a prospective, randomized, single-blind, split-mouth, national multicenter trial, comparing the efficacy of a self-etch adhesive system combined (SAM) with a flowable composite to that of a fluoride varnish for the…
- Trial name
- PRADEX (NCT04872907)
- Testing
- adhesive system, fluoride varnish, flowable composite
- Volunteers
- 60 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Alzheimer's Disease
The Prevalence of Vitamin D Deficiency in Patients With Alzheimer's Disease
Recent studies indicate that there is a relationship between cognitive decline and vitamin D deficiency. Up to now, no study has investigated the prevalence of vitamin d deficiency in patient with Alzheimer's disease.
- Trial name
- DEVIT-ALZ (NCT01420315)
- Where
- Turkey (Türkiye)
- Volunteers
- 502 people
- Sponsor
- Saglik Bilimleri Universitesi Gulhane Tip Fakultesi
Vitamin D Deficiency
Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers
The purpose of this study is to isolate genotype-specific DBP/Gc from homozygous human volunteers and use these purified proteins to cross-validate existing or novel assays for this serum protein and to evaluate the binding…
- Trial name
- NCT02258035
- Testing
- Blood draw
- Where
- Belgium
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Type 2 Diabetes Mellitus (T2DM), Vitamin D Deficiency
Effect of Vitamin D Supplementation on Metabolic Parameters in Patients With Type 2 Diabetes and Vitamin D Deficiency
The goal of this clinical study is to learn whether vitamin D supplementation improves metabolic control in adults with type 2 diabetes mellitus who have vitamin D deficiency.
- Trial name
- VITD-DM2 (NCT07468721)
- Testing
- cholecalciferol (vitamin D3)
- Where
- Paraguay
- Volunteers
- 119 people
- Sponsor
- Faculty of Medical Sciences, Clinical Hospital
Epilepsy, Magnesium Deficiency
Magnesium as a Mediator of Bone and Vitamin D Metabolism in Patients on Antiepileptic Drug Therapy
The objective of this study is to determine the role of magnesium on bone and vitamin D metabolism in patients receiving anti-epileptic medications.
- Conditions
- Epilepsy, Magnesium Deficiency, Vitamin D Deficiency
- Trial name
- NCT03471481
- Testing
- No Intervention. Study is Cross Sectional in nature
- Where
- 2 sites in United States
- Volunteers
- 7 people
- Sponsor
- Drexel University
Secondary Hyperparathyroidism
Suspected Deficient Activation of Vitamin D in Patients With Secondary Hyperparathyroidism
The purpose of this study is to determine if a reduction in the enzyme 1-hydroxylase, which activates Vitamin D, is the cause of overactivity of the parathyroid glands (called secondary hyperparathyroidism - normal blood calcium…
- Trial name
- 1hydroxylase (NCT00754442)
- Testing
- Teriparatide
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Allergic Rhinitis, Allergic Rhinitis (AR)
Effect of Combined Probiotics and Vitamin D on Symptoms of Allergic Rhinitis
The goal of this clinical trial is to learn if taking probiotics, vitamin D, or both together can help lower symptoms of allergic rhinitis (AR) and improve quality of life in adults.
- Trial name
- NCT07115342
- Testing
- Standard Allergic Rhinitis Treatment, Combined Vitamin D and Probiotics Supplementation
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Tanta University
Chronic Kidney Disease-Mineral and Bone Disorder
Relationship Between Serum 1,25-dihydroxy Vitamin D and Markers of Bone Metabolism in Renal Dysfunction Patients
This cross-sectional study was conducted, including those subjects tested for 1,25(OH)2D during Jan 2015-Dec 2021. Estimated glomerular filtration rate (eGFR) was calculated and subjects were classified into chronic kidney…
- Trial name
- NCT05399251
- Volunteers
- 1,553 people
- Sponsor
- Aga Khan University Hospital, Pakistan
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