Clinical trials: Vitamin D Deficiency, completed
COVID, Vitamin D Deficiency
Vitamin D Levels in SARS-CoV-2: Do Current Adequacy Thresholds Reflect Clinical Risk? Insights From a Large Turkish Cohort
Blood vitamin D levels may be associated with severity of viral infections. To find out If there is a statistically significant relation between blood 25-hydroxy vitamin D (25(OH)D) levels and disease severity, patients with…
- Trial name
- NCT04394390
- Testing
- vitamin d
- Where
- Turkey (Türkiye)
- Volunteers
- 1,100 people
- Sponsor
- Bursa City Hospital
Respiratory Tract Infection, Vitamin D Deficiency
Cholecalciferol Intervention to Prevent Respiratory Infections Study
This is a feasibility double-blind randomised controlled trial in 32 participants. It evaluates the feasibility of a full trial which will examine the efficacy of weekly supplementation of cholecalciferol (vitamin D3) relative to…
- Trial name
- CIPRIS (NCT01549938)
- Testing
- Cholecalciferol
- Where
- Australia
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Menzies Institute for Medical Research
End Stage Renal Disease, Hyperparathyroidism, Secondary
Mineral and Bone Disorders Outcomes in Stage 5D of Chronic Kidney Disease
The MBD-5D is a prospective observational study with a case-cohort and a cohort design. Eligible patients are receiving hemodialysis and have secondary hyperparathyroidism.
- Trial name
- MBD-5D (NCT00995163)
- Where
- Japan
- Volunteers
- 8,020 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Alkaline Phosphatase Deficiency, Vitamin D Deficiency
Serum Alkaline Phosphatase Levels In Healthy Turkish Children
Alkaline phosphatase (ALP), is a metalloenzyme of the plasma membrane. Serum ALP levels in children are closely related to age and gender, many commercial test kits being used in hospitals, are only offering reference values for…
- Trial name
- NCT06689709
- Testing
- Serum Alkaline Phosphatase Levels
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Emine Hafize
Hypertensive Disease, Deficiency of Vitamin D3
Effect of Vitamin D3 on Cardiovascular Risk Factors
The aim of this study is to investigate whether a supplementation of Vitamin D3 can be used to reduce atherosclerotic risk factors.
- Trial name
- NCT01501916
- Testing
- Vitamin D3
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Martin-Luther-Universität Halle-Wittenberg
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
Chest Pain
Does Vitamin D Deficiency Associated With Hypercoagulability & Increased Thrombin Generation?
Cardiovascular disease is the most common cause of mortality and morbidity worldwide. Recently, a growing body of evidence has identified Vitamin D deficiency as a potential risk factor for cardiovascular disease.
- Trial name
- NCT01799655
- Where
- Israel
- Volunteers
- 100 people
- Sponsor
- HaEmek Medical Center, Israel
X-linked Hypophosphatemia
A Repeated Study of KRN23 in Adults With X-Linked Hypophosphatemia
The primary purpose of this study is to assess the safety and efficacy of repeated subcutaneous (SC) injections of KRN23 in adult subjects with X-Linked Hypophosphatemia (XLH).
- Trial name
- NCT01340482
- Testing
- KRN23
- Where
- 6 sites in United States, Canada
- Volunteers
- 29 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Hypophosphatemia, Hypophosphatemic Rickets
Open Label Trial Assessing Safety and Efficacy of Burosumab (KRN23), in a Patient With ENS and Hypophosphatemic Rickets
A 52 week, open label trial to assess the safety and efficacy of KRN23, an investigational antibody to FGF23, in a single pediatric patient with Epidermal Nevus Syndrome(ENS) and associated hypophosphatemic rickets A 26 weeks…
- Conditions
- Hypophosphatemia, Hypophosphatemic Rickets, Pain, Chronic
- Trial name
- NCT03581591
- Testing
- Burosumab
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- Redwood Dermatology Sciences
Vitamin D Deficiency
Establishing the Vitamin D Requirements During Lactation
The purpose of this study is to determine the effectiveness and safety of maternal and infant vitamin D supplementation as a function of ethnicity and latitude in the prevention of vitamin D deficiency in the breastfeeding…
- Trial name
- NCT00412074
- Testing
- 400 IU Vitamin D3 (cholecalciferol), 2400 IU Vitamin D3 (cholecalciferol), 6400 IU Vitamin D3 (cholecalciferol)
- Where
- 2 sites in United States
- Volunteers
- 460 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Renal Osteodystrophy, End Stage Renal Disease
Phase II Randomized Study of the Effects of Growth Hormone on Children and Adolescents on Maintenance Dialysis
OBJECTIVES: I. Evaluate the separate and combined skeletal effects of recombinant human growth hormone (GH) and calcitriol in patients with adynamic renal osteodystrophy. II.
- Trial name
- NCT00004340
- Testing
- calcitriol, growth hormone
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- National Center for Research Resources (NCRR)
Vitamin D Deficiency, Type 2 Diabetes Mellitus
Vitamin D, Cardiovascular Disease, and African Americans
African-Americans have higher rates of cardiovascular disease morbidity and mortality, as well as vitamin D deficiency. Multiple observational studies have demonstrated an increased risk of vitamin D deficiency in African…
- Conditions
- Vitamin D Deficiency, Type 2 Diabetes Mellitus, Cardiovascular Disease
- Trial name
- NCT01655810
- Testing
- Vitamin D3, Calcium carbonate
- Where
- United States
- Volunteers
- 86 people
- Sponsor
- Washington University School of Medicine
Nutritional Status, Nutrient Deficiency
Dietary Challenges in the Population of Nursing Homes' Residents
To obtain up-to-date data on nutritional status of older adults, a national dietary survey will be conducted in 2022/2023, providing data on the consumption of foods and enabling the assessment intakes of energy and specific…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NUTRICARE (NCT05389618)
- Testing
- Diagnostic Tests
- Where
- Slovenia
- Volunteers
- 387 people
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Human Immunodeficiency Virus (HIV), Vitamin D Deficiency
Study of Vitamin D and Effect on Heart Disease and Insulin Resistance
The purpose of this study is to evaluate how Vitamin D affects endothelial function, inflammation, lipids, insulin resistance, vitamin D levels, and parathyroid hormone (PTH).
- Conditions
- Human Immunodeficiency Virus (HIV), Vitamin D Deficiency, HIV Infections
- Trial name
- NCT01093417
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- University Hospitals Cleveland Medical Center
Vitamin D Deficiency, Vitamin D Insufficiency
Evaluating the Effect of SOLIUS UV Light Source in Improving Vitamin D Status
The aim of this study is to evaluate the safety and effectiveness of the SOLIUS System in improving serum levels of 25-hydroxyvitamin D in vitamin D deficient/ insufficient adults of various skin types.
- Trial name
- NCT04780776
- Testing
- UVB treatment
- Where
- United States
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- Boston University
Osteoporosis, Exercise Overtraining
High-intensity Interval Training and Vitamin D Effects on Bone Metabolism Among Women Diagnosed With Osteoporosis
The effects of 16-week high-intensity interval training (HIIT) and vitamin D supplements on bone mineral density (BMD) in women with osteoporosis.
- Conditions
- Osteoporosis, Exercise Overtraining, Vitamin D 25-Hydroxylase Deficiency
- Trial name
- NCT06624657
- Testing
- vitamin D supplements fo 16 weks
- Volunteers
- 120 people
- Sponsor
- King Saud University
Obesity
Duration of Vitamin D Stores After Prolonged Vitamin D Substitution
Ingested or skin produced vitamin D is either hydroxylated in the liver to 25-hydroxyvitamin D (25(OH)D), metabolized and excreted in the urine, or stored in adipose and other tissues.
- Trial name
- NCT01729013
- Where
- Norway
- Volunteers
- 78 people, healthy volunteers welcome
- Sponsor
- University of Tromso
Vitamin D Deficiency
Vitamin D and Mortality: an Individual Participant Data Meta-analysis of Standardized 25-hydroxyvitamin D
Vitamin D deficiency is a risk factor for mortality but existing data are limited by missing standardization of laboratory methods for 25-hydroxyvitamin D (25[OH]D).
- Trial name
- NCT02438488
- Where
- Austria
- Volunteers
- 26,916 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Vitamin D Deficiency, Sarcopenia
Vitamin D Deficiency and Body Composition in the Patients With Hemophilia
Hemophilia is associated with osteoporosis and increased prevalence of low bone mineral density (BMD). Many clinical risk factors have been reported, such as hemophilic arthropathy, reduced physical activity, decreased sun…
- Conditions
- Vitamin D Deficiency, Sarcopenia, Osteoporosis, Body Composition
- Trial name
- NCT05517070
- Where
- Taiwan
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Tsung-Ying Li
Osteopenia, Bone Metabolism Disorders
Effects of Aerobic Versus Resistance Training on Bone Metabolism in Stage 3-4 Chronic Kidney Disease
This randomized controlled trial investigates the comparative effects of aerobic versus resistance training on bone mineral density (BMD) and bone metabolism markers in patients with stage 3 or 4 chronic kidney disease (CKD).
- Conditions
- Osteopenia, Bone Metabolism Disorders, Chronic Kidney Disease (Stage 3-4), Mineral and Bone Disorder (CKD-MBD)
- Trial name
- CKD-BONE-EX (NCT07133256)
- Testing
- Resistance Exercise, Aerobic Training
- Where
- Egypt
- Volunteers
- 60 people
- Sponsor
- Sinai University