Clinical trials: Vitamin D Deficiency
X-linked Hypophosphatemic Rickets/Osteomalacia
A Study of KRN23 in Subjects With X-linked Hypophosphatemic Rickets/Osteomalacia
The objective of this study is to assess the safety and tolerability of KRN23 after a single subcutaneous (SC) administration in subjects with X-linked hypophosphatemic rickets/osteomalacia (XLH) in Japan or Korea.
- Trial name
- NCT02181764
- Testing
- KRN23
- Where
- 2 sites in Japan, South Korea
- Volunteers
- 15 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Vitamin D Deficiency
Vitamin D Supplementation Requirement in Obese Subjects
Vitamin D deficiency is common in obese patients. Most of vitamin D supplementation studies were done with non-obese subjects. This study looks at vitamin D supplementation requirements in obese patients as compared to non-obese…
- Trial name
- NCT00996866
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 27 people
- Sponsor
- Winthrop University Hospital
Hot Flushes, Menopause, Premature
The Role of Vitamin D in Menopause: Relationship to Menopausal Symptoms in Body Composition
Specific Aim 1: To compare effects of Vitamin D supplementation to usual care on symptoms in women transitioning to early postmenopause and determine the associated effect size in order to conduct a power analysis for a future…
- Conditions
- Hot Flushes, Menopause, Premature, Obesity, Vitamin D Deficiency
- Trial name
- FLASH (NCT01141972)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Kaiser Permanente
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, Covid19
Baseline Vitamin D Deficiency and COVID-19 Disease Severity
It is known that vitamin D has been found to decrease incidence of viral respiratory infections, as well as have effects on multiple cytokines involved in immunomodulation and the bradykinin/renin-angiotensin system.
- Trial name
- NCT04628000
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Parkview Medical Center
Metabolic Bone Disease, Osteopenia
A Study to Assess Metabolic Bone Disease of Prematurity Using an Acoustic Method
The goal of this project is to develop a new noninvasive ultrasound based technique, called vibro-acoustic analysis (VAA), for evaluation of infant bone health with particular application in assessment of bone health in premature…
- Conditions
- Metabolic Bone Disease, Osteopenia, Neonatal Rickets
- Trial name
- NCT04752098
- Testing
- Vibro-acoustic analysis (VAA), based on ultrasound radiation force
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Mayo Clinic
Hypovitaminosis D, Deficiency of Micronutrients
Investigation of Vitamin D3 Enriched, Reduced-fat Yellow Cheese Efficacy to Prevent Vitamin D Deficiency
The primary aim of the current study was to investigate whether the consumption of vitamin D3 enriched, reduced-fat yellow cheese can counterbalance the expected decrease in serum 25-hydroxyvitamin D concentration during winter…
- Trial name
- NCT02543671
- Testing
- vitamin D3 enriched, reduced-fat yellow cheese, plain (non-fortified) reduced-fat yellow cheese
- Where
- Greece
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Harokopio University
Vitamin D Deficiency, Alveolar Bone Loss
Vit D and Post-extractive Bone Turnover
The aims of the study was to correlate the extent of the dimensional alveolar bone changes after tooth extraction and contextual guided bone regeneration with serum vit D levels in 14 patients.
- Conditions
- Vitamin D Deficiency, Alveolar Bone Loss, Alveolar Bone Resorption
- Trial name
- NCT06412705
- Testing
- Tooth extraction, guided bone regeneration and dental implant
- Where
- Italy
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Studio Odontoiatrico Associato Dr. P. Cicchese e L. Canullo
Hypophosphatemic Rickets, X-Linked Dominant
Effect of Cinacalcet on Parathyroid Hormone Secretion in Children and Adolescents With Hypophosphatemic Rickets
This study will measure the effect of cinacalcet (Sensipar) on parathyroid hormone (PTH) secretion in children and adolescents with hypophosphatemic rickets (XLH).
- Trial name
- NCT00195936
- Testing
- Cinacalcet
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Children's Mercy Hospital Kansas City
Age-related Macular Degeneration, Vitamin D Deficiency
Omega 3 and Vitamin D Dosage in a Population With Moderate to High Risk of AMD
Objectives: The investigators conducted a prospective study in Belgium with the objective to determine the proportion of subjects identified at moderate-to-high risk for AMD, based on the STARS® questionnaire, in need of…
- Trial name
- OVID-AMD (NCT04482465)
- Testing
- blood sample
- Where
- Belgium
- Volunteers
- 50 people
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Vitamin D Deficiency
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D Daily Supplements on Active Periodontal Therapy With Stage II Grade B Periodontitis Patients
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D daily Supplements on Active Periodontal Therapy with Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06654063
- Testing
- non-surgical periodontal therapy (SRP), non-surgical periodontal therapy (SRP)+ Omega-3, non-surgical periodontal therapy (SRP)+ Vitamin D
- Where
- Egypt
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Cairo University
Polycystic Ovary Syndrome, Insulin Resistance
Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Polycystic ovary syndrome (PCOS) is a common endocrine disorder in reproductive age women, which causes disordered follicle growth and ovulation resulting in infertility.
- Conditions
- Polycystic Ovary Syndrome, Insulin Resistance, Vitamin D Deficiency, Obesity
- Trial name
- EMDPCOS (NCT03652987)
- Where
- United Kingdom
- Volunteers
- 300 people
- Sponsor
- St George's, University of London
Tibial Fractures, Vitamin D Deficiency
Vitamin D Supplementation and Tibia Fracture. Does it Improve Healing Rate?
This study evaluates the effect of Vitamin D3 supplementation in healing rate of tibia fractures in adult patients with low vitamin D.
- Conditions
- Tibial Fractures, Vitamin D Deficiency, Fracture Healing
- Trial name
- ViDco (NCT03232216)
- Testing
- Vitamin D3.
- Where
- Chile
- Volunteers
- 682 people, healthy volunteers welcome
- Sponsor
- Hospital del Trabajador de Santiago
Obesity, Vitamin D Deficiency
Vitamin D and Vascular Health in Children
In this study, we will test the central hypothesis that enhancement of vitamin D status in obese and overweight children will improve their vascular health and their cardiovascular disease (CVD) and metabolic syndrome risk…
- Trial name
- NCT01797302
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Vitamin D Deficiency, B12 Deficiency Vitamin
Relationship Between Vitamin D and Vitamin B12 Levels and Neuropathic Pain in Lipedema
Lipedema is a disease characterized by bilateral abnormal fat deposition in the upper and lower extremities. Pain is a common symptom in lipedema.Vitamin D plays an important role in chronic pain.
- Conditions
- Vitamin D Deficiency, B12 Deficiency Vitamin, Lipedema
- Trial name
- NCT06338059
- Testing
- Vitamin B12 Level
- Where
- Turkey (Türkiye)
- Volunteers
- 200 people
- Sponsor
- Fatih Sultan Mehmet Training and Research Hospital
Vitamin d Deficiency
Effects of Vitamin D on Cardiovascular Health in Black Women
The goal of this clinical trial is to understand the effects of oral vitamin D3 supplementation on various cardiovascular risk factors in generally healthy, young adult black women who are vitamin D deficient or insufficient at…
- Trial name
- NCT05656742
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Delaware
Chronic Hepatitis C
Vitamin D Deficiency in Subjects With Chronic Hepatitis C Compared to Healthy Volunteers
The objective of this study is to assess the prevalence of vitamin D deficiency in patients with chronic Hepatitis C compared to a matched control group of healthy individuals in the Sioux Falls area.
- Trial name
- NCT01274013
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Avera McKennan Hospital & University Health Center
Muscle Weakness, Vitamin D Deficiency
Vitamin D and Physical Performance Before and After Intervention and Birth Outcome in Pregnant Somali and Swedish Women
Somali migrant women, often in veiled clothing, living in a town in mid Sweden on the 60:th parallel were observed to be weak and to have a waddling gate.
- Trial name
- NCT02922803
- Testing
- 1 combination tablet of Vitamin D3/calcium per day, 2 combination tablets of Vitamin D3/calcium per day
- Where
- Sweden
- Volunteers
- 123 people, healthy volunteers welcome
- Sponsor
- Uppsala University
Serum 25-hydroxyvitamin D Concentrations (25OHD)
The BreaD Study - Bio-availability of D2 Vitamin Present in Bread
Vitamin D3 is synthesized in skin exposed to ultraviolet-B-irradiation of sunlight. However, in Northern Europe, including Finland, exposure to sunlight is limited or non-existent in winter.
- Trial name
- BreaD_ODIN (NCT02525003)
- Testing
- Vitamin D2, Vitamin D3, Vitamin D2 fortified bread
- Where
- Finland
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- University of Helsinki
Vitamin D Deficiency, Glucose Intolerance
Impact of Correction of Vitamin D Deficiency in Oxidative Stress in Patients With Prediabetes (VICOX)
The investigators aim to determine the effect of the correction of vitamin D in vitamin D deficient patients (<15ng/ml) in oxidative stress and insulin resistance in patients with impaired glucose tolerance.
- Conditions
- Vitamin D Deficiency, Glucose Intolerance, Oxidative Stress, Insulin Resistance
- Trial name
- VICOX (NCT03356873)
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 31 people
- Sponsor
- Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran