Clinical trials: Deficiency, Vitamin D
Osteomalacia, Neoplasms
Catheterization to Locate Mesenchymal Tumors in Patients With Tumor-Induced Osteomalacia or Oncogenic Osteomalacia
This study will use a procedure called selective venous catheterization in patients with tumor-induced osteomalacia (TIO) or oncogenic osteomalacia (OOM) to try to locate very small tumors that produce proteins called…
- Trial name
- NCT00099762
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Healthy Humans
Immune and Metabolic Effects of Vitamin D Supplementation in Healthy Humans
In this placebo controlled study the investigators aim to investigate the effect of a 3 month vitamin D supplementation on parameters of the immune, endocrine and metabolic system in healthy women and men. Vitamin D.
- Trial name
- NCT01248442
- Testing
- Cholecalciferol
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
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
HIV Infection
Trial of Vitamin D in HIV Progression
The purpose of this study is to determine the efficacy and safety of vitamin D3 (cholecalciferol) supplementation on HIV progression and incidence of pulmonary tuberculosis among HIV-positive Tanzanian adult men and women…
- Trial name
- TOV4 (NCT01798680)
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- Tanzania
- Volunteers
- 4,000 people
- Sponsor
- Harvard School of Public Health (HSPH)
Vitamin D Deficiency
Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals
This is a cross-sectional study designed to compare plasma/serum and urine vitamin D metabolite profiles of vitamin D sufficient and insufficient individuals. There are two phases of this study.
- Trial name
- VITD-2013 (NCT02422784)
- Testing
- Rooibos Iced-Tea (Control), Rooibos Tea - Vitamin D3, Rooibos Tea- Vitamin D3 & Calcium
- Where
- Canada
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Manitoba
Vitamin D Deficiency
A Household-Based Dietary Intervention Study of Vitamin D Fortified Bread in Irish Families
Vitamin D deficiency is common. It is caused by limited sun availability together with a low supply of vitamin D in the food system. There is a high prevalence of low vitamin D status around the world.
- Trial name
- Fam-D-Bread (NCT07481240)
- Testing
- Fortified Bread, Unfortified bread
- Where
- 2 sites in Ireland
- Volunteers
- 128 people, healthy volunteers welcome
- Sponsor
- University College Cork
HIV-infection/Aids
Vitamin D Supplementation in HIV
The purpose of this study is to evaluate safety and efficacy of vitamin D supplementation in children, adolescents and young adults with Human Immunodeficiency Virus and acquired immunodeficiency syndrome (HIV/AIDS).
- Trial name
- NCT01475890
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 58 people
- Sponsor
- Children's Hospital of Philadelphia
Muscle Strength, Vitamin B 12 Deficiency
Study of the Association of Muscle Strength, Balance and Other Factors With Vitamin Levels Among Elderly Diabetics
Vitamin B12 deficiency can cause severe problems with the blood, nerves, brain and psychological well-being. Ironically, our modern methods for the control of diabetes mellitus can actually contribute to vitamin B12 deficiency.
- Conditions
- Muscle Strength, Vitamin B 12 Deficiency, Folate Deficiency, Vitamin D Deficiency
- Trial name
- NCT03376490
- Where
- Singapore
- Volunteers
- 56 people
- Sponsor
- SingHealth Polyclinics
X-linked Hypophosphatemia
Dental Implants in Patients With X-linked Hypophosphatemia
X-linked hypophosphatemia (XLH) is a rare genetic skeletal disease where increased phosphate wasting in the kidney leads to hypophosphatemia and prevents normal mineralization of bone and dentin, with osteomalacia as a principal…
- Trial name
- IMPLANTS-XLH (NCT03879915)
- Testing
- Dental Implant placement
- Where
- France
- Volunteers
- 36 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Deficiency of Vitamin D3, COPD
The Pittsburgh Vitamin D Study: Vitamin D Supplementation in Vitamin D-deficient Subjects at Risk of Lung Cancer
This study aims to establish the ability of 4,000 IU oral vitamin D3 per day (in combination with a daily multivitamin) to safely convert vitamin D3-deficient subjects at increased risk of lung cancer to a vitamin D3-sufficient…
- Trial name
- NCT02532062
- Testing
- Cholecalciferol, multivitamin
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- University of Pittsburgh
Vitamin D Deficiency
Vitamin D Status in Young Medical Residents
Retrospective, observational, and anonymous study to assess vitamin D status in young medical residents of both sexes who joined the staff of the Reina Sofia University Hospital (HURS) in Cordoba, Spain, in March 2020.
- Trial name
- NCT07479303
- Testing
- Calcifediol (Vitamin D)
- Where
- Spain
- Volunteers
- 30 people
- Sponsor
- Maimónides Biomedical Research Institute of Córdoba
Pneumonia, Vitamin D Deficiency
Kabul Vitamin D Supplementation Trial
Background: Pneumonia is the leading cause of childhood mortality, accounting for 19% of the 10.6 million deaths that occur each year1.
- Trial name
- NCT00548379
- Testing
- vitamin D
- Where
- 2 sites in Afghanistan
- Volunteers
- 3,048 people, healthy volunteers welcome
- Sponsor
- London School of Hygiene and Tropical Medicine
Secondary Hyperparathyroidism, Chronic Kidney Disease-Mineral and Bone Disorder
Injection of Teriparatide to Prevent Hypocalcemia After Parathyroidectomy in Dialysis Patients (TeriCa).
This is a pilot randomized controlled trial aimed to evaluate the effect of teriparatide on the clinical course of hypocalcemia after parathyroidectomy for secondary hyperparathyroidism in dialysis-dependent patients.
- Conditions
- Secondary Hyperparathyroidism, Chronic Kidney Disease-Mineral and Bone Disorder, Dialysis, Hypocalcemia
- Trial name
- TeriCa (NCT04750460)
- Testing
- Teriparatide
- Where
- Russia
- Volunteers
- 20 people
- Sponsor
- Saint Petersburg State University, Russia
Vitamin D Deficiency, Spinal Cord Injury
Vitamin D Supplementation in Wheelchair Indoor Athletes
There is a high prevalence of vitamin D deficiency in Switzerland. In indoor-athletes as well as wheelchair users, vitamin D deficiency occurs even more often.
- Conditions
- Vitamin D Deficiency, Spinal Cord Injury, Drug Effects, Dietary Supplements
- Trial name
- VitD_SCI (NCT02621320)
- Testing
- Vitamin D
- Where
- Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Swiss Paraplegic Research, Nottwil
Adverse Bone Health, HIV Infection
Calcium and High-dose Vitamin D Supplementation on Bone Mineral Density Among HIV-infected Children and Adolescents
Since there is no cure for HIV, therefore antiretroviral therapy must be taken life-long. Some of the HIV medications can negatively impact the health of the bone and is even more exacerbated in perinatally HIV-injected children…
- Trial name
- CAL-D (NCT02426840)
- Testing
- High dose vitamin D and calcium, Normal dose vitamin D and calcium
- Where
- 5 sites in Thailand
- Volunteers
- 200 people
- Sponsor
- Chiang Mai University
Hip Arthropathy, Knee Arthropathy
Effect of Vitamin D Status and Repletion on Postoperative Total Joint Arthroplasty Complications
Vitamin D status has been shown to have an effect on post-operative outcomes in total joint arthroplasty. The goal of this study is to determine if pre-operative supplementation and correction of Vitamin D deficiency can reduce…
- Conditions
- Hip Arthropathy, Knee Arthropathy, Vitamin D Deficiency
- Trial name
- NCT04229368
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 900 people
- Sponsor
- Brigham and Women's Hospital
CKD, Chronic Kidney Diseases
Effect of Ergocalciferol on Iron Metabolism in Individuals With Chronic Kidney Disease
The purpose of the study is to learn more about how treatment with vitamin D can affect iron metabolism and blood levels of hepcidin (hormone controlling iron levels) in people with chronic kidney disease (CKD).
- Conditions
- CKD, Chronic Kidney Diseases, Hepcidin, Ergocalciferol
- Trial name
- NCT03073369
- Testing
- Ergocalciferol 50000 UNT
- Where
- United States
- Sponsor
- University of Alabama at Birmingham
Vitamin D Deficiency
Vitamin D in Pregnancy and Lactation
Background: Vitamin D is vital throughout pregnancy and lactation for both maternal and infant health. Health Canada recommends women take the AI of 5ug/day of vitamin D during pregnancy, however, it is unknown how much vitamin D…
- Trial name
- NCT01112891
- Testing
- Vitamin D, Vitamin D3
- Where
- Canada
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Critical Illness, Vitamin D Deficiency
VITdAL@ICU - Correction of Vitamin D Deficiency in Critically Ill Patients
Study hypothesis: High-dose vitamin D leads to a shorter hospital stay in critically ill patients Vitamin D deficient patients will be randomized to receive either 540,000 IU cholecalciferol or placebo.
- Trial name
- VITdAL@ICU (NCT01130181)
- Testing
- Cholecalciferol
- Where
- Austria
- Volunteers
- 480 people
- Sponsor
- Harald Dobnig, MD
Insulin Sensitivity
Effect of Vitamin D Replacement on Insulin Sensitivity
Healthy subjects with low Vitamin D levels will be randomly assigned to either Vitamin D replacement or placebo for a period of 8 weeks.
- Trial name
- NCT01268111
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Texas Tech University Health Sciences Center
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