Clinical trials: Deficiency, Vitamin D
Cystic Fibrosis
Comparison of Absorption of Vitamin D in Cystic Fibrosis
The investigators predict that a powder pill form of vitamin D will be more effectively absorbed than an oil form of vitamin D in people diagnosed with Cystic Fibrosis.
- Trial name
- NCT01880346
- Testing
- Vitamin D Powder, Vitamin D Oil
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Emory University
Vitamin D Deficiency
Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants
The purpose of this research study is to compare the effects of higher dose vitamin D with commonly recommended dose in pregnant women to see which is better in achieving and/or maintaining sufficient vitamin D blood levels…
- Trial name
- PA 03-103 (NCT00610688)
- Testing
- Prenatal Vitamin, Cholecalciferol (Vitamin D3)
- Where
- 2 sites in United States, United Arab Emirates
- Volunteers
- 192 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Hypophosphatasia
Expanded Access Program for Asfotase Alfa Treatment for Patients With Infantile- or Juvenile-onset Hypophosphatasia (HPP)
This clinical trial is being conducted in Hypophosphatasia, a bone disorder caused by gene mutation(s) resulting in bone defects. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT02496689
- Testing
- asfotase alfa
- Where
- 5 sites in United States, France
- Sponsor
- Alexion Pharmaceuticals, Inc.
COVID-19, Vitamin D Deficiency
The Effects of a Sublingual Sprayable Microemulsion of Vitamin D on Inflammatory Markers in COVID-19 Patients
This placebo-controlled five-day study will be performed on 100 hospitalized COVID-19 patients with vitamin D insufficiency randomized into two groups.
- Trial name
- NCT05502068
- Testing
- Vitamin D 25 (OH) 12000 IU in the form of a sublingual sprayable microemulsion
- Where
- Latvia
- Volunteers
- 102 people
- Sponsor
- Pauls Stradins Clinical University Hospital
Other Preterm Infants, Vitamin D Deficiency
The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity
This trial objective is to assess whether doubling the daily intake of vitamin D improves serum vitamin D levels and serves as primary prevention of respiratory infections and asthma in premature infants.
- Conditions
- Other Preterm Infants, Vitamin D Deficiency, Bronchiolitis, Asthma
- Trial name
- NCT02404623
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Soroka University Medical Center
Cancer Breast, Hypovitaminosis D
Influence of Preoperative Vitamin D Level on Postoperative Pain in Breast Cancer Surgery Patients
Vitamin D deficiency is a general problem that vigorously affects human health . Breast cancer is the most frequently diagnosed life-threatening cancer in women and the leading cause of cancer death among women.Vitamin D…
- Trial name
- NCT06551688
- Testing
- Serum 25(OH)D level
- Where
- Egypt
- Volunteers
- 184 people
- Sponsor
- Fayoum University
Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption
A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women
Iron is one of the most vital elements in humans as it plays a role in physiological functions such as transferring and storing oxygen, transporting electrons and catalysing numerous reactions, from oxidative metabolism to…
- Conditions
- Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption, Vitamin D Deficiency
- Trial name
- NCT02714361
- Testing
- Vitamin D3 supplement
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Chester
Osteoporosis, Fractures
Determination of Optimum Age for DXA Screening for Osteoporosis in HIV - The Probono 1 Study
The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups.
- Conditions
- Osteoporosis, Fractures, HIV Infection
- Trial name
- Probono1 (NCT01669954)
- Where
- United Kingdom
- Volunteers
- 440 people, healthy volunteers welcome
- Sponsor
- King's College London
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
- NCT01704079
- Testing
- CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
- Where
- United States
- Volunteers
- 216 people
- Sponsor
- OPKO IP Holdings II, Inc.
Vitamin D Deficiency
Impact of Vitamin D Status on Bones in Breastfed Infants
Vitamin D deficiency is widespread and linked to decreased bone mineral content. Little data exists regarding the vitamin D status and the relationship of 25-hydroxyvitamin D (25-OHD) status to functional bone health outcomes in…
- Trial name
- NCT00697294
- Testing
- Tri-Vi-Sol
- Where
- 3 sites in United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
Vitamin D Deficiency
Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.
The purpose of this study is to examine whether a behavioural intervention changes attitudes, knowledge, intake or blood levels of vitamin D in young adults.
- Trial name
- NCT02118129
- Testing
- an educational video, wait listed
- Where
- Canada
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Guelph
X-Linked Hypophosphatemia
A Study to Describe the Lived Experience of XLH for Adolescents at End of Skeletal Growth
An observational, prospective, mixed-methods study involving the integration of quantitative and qualitative data exploring the lived experience of burosumab-treated adolescents with XLH at the end of skeletal growth.
- Trial name
- NCT05181839
- Testing
- Burosumab
- Where
- 14 sites in France, Germany and 3 more
- Volunteers
- 25 people
- Sponsor
- Kyowa Kirin Pharmaceutical Development Ltd
Hypovitaminosis D
Vitamin D Status and the Adequacy of Vitamin D Intake in Early Preterm Infants
Vitamin D is an essential nutrient. Deficiency of vitamin D is widespread. The prevalence of vitamin D deficiency in early preterm infants is unknown.
- Trial name
- NCT01793402
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Peritoneal Dialysis-associated Peritonitis, Vitamin D Deficiency
Oral Vitamin D Supplementation Prevent Peritoneal Dialysis-related Peritonitis
This is a multicenter randomized, placebo-controlled trial of Vitamin D supplementation in patients on peritoneal dialysis to determine whether oral administration of vitamin D3 after curing an episode of peritonitis could reduce…
- Trial name
- VD-PD (NCT05860270)
- Testing
- Cholecalciferol
- Where
- China
- Volunteers
- 176 people
- Sponsor
- Peking University First Hospital
Postmenopausal Osteoporosis, Hypovitaminosis D
Antiresorptive Effect of Treatment With Risedronate and Vitamin D in Postmenopausal Patients
Osteoporosis is defined as a systemic disease of bone mineralization, characterized by a decrease in bone mineral density that causes bone fragility and increases the risk of fractures during menopause.
- Conditions
- Postmenopausal Osteoporosis, Hypovitaminosis D, Hyperparathyroidism
- Trial name
- NCT05346419
- Testing
- Risedronate, Vitamin D
- Where
- Mexico
- Volunteers
- 33 people
- Sponsor
- Hospital Regional 1o de Octubre
Vitamin D Deficiency
Vitamin D Deficiency Still Growing
Vitamin D deficiency has become one of the most prevalent health problems in modern society. However, there has been no study that has reported the trend of vitamin D status in Asia.
- Trial name
- NCT03304795
- Volunteers
- 39,759 people, healthy volunteers welcome
- Sponsor
- DongGuk University
Insulin Resistance
Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents
Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese.
- Trial name
- NCT01856946
- Testing
- 4,000 IU vitamin D3
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Vitamin D Deficiency
Effect of Single High Dose of Cholecalciferol on Serum Metabolites of Vitamin D
The aim of this interventional study is to assess the effect of the single high dose of vitamin D on its serum metabolites in elderly. The main questions it attempts to answer is: 1.
- Trial name
- NCT05591170
- Testing
- Cholecalciferol 120 000 IU
- Where
- Poland
- Volunteers
- 58 people
- Sponsor
- Department of Endocrinology, Centre of Postgraduate Medical Education
Hypovitaminosis D
Vitamin D, Blood Pressure, Lipids, Infection and Depression
There are numerous indications for a relation between low serum levels of 25(OH)D and blood pressure, lipid levels, frequency of infections and tendency towards depression.
- Trial name
- NCT00960232
- Testing
- Cholecalciferol
- Where
- Norway
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- University of Tromso
Influenza Vaccine, Immune Response
Evaluation of Metabolic Predictors of Influenza Vaccine Immune Response in the Singapore Elderly Population - the DYNAMIC Trial
The trial aims to evaluate role of metabolic factors including systemic 25-OH D and diabetes in the adaptive immune response (haemagluttination inhibition titer) to influenza vaccine in the elderly.
- Conditions
- Influenza Vaccine, Immune Response, Elderly, Vitamin D Deficiency
- Trial name
- NCT03399357
- Testing
- Influenza Vaccine
- Where
- Singapore
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- Tan Tock Seng Hospital
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