Clinical trials: Vitamin D Deficiency, completed
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)
Deficiency, Vitamin D, Elderly, Frail
The Effect of Calcifediol (Hy.D 25 SD/S) and Vitamin D3 on Muscle Strength in a Frail Elderly Population
In an ageing population, the need for interventions to help older people remain healthy, active and independent for as long as possible, increases.
- Trial name
- D-Fit (NCT02349282)
- Testing
- Calcifediol 10ug/day, Vitamin D3 20ug/day
- Where
- Netherlands
- Volunteers
- 78 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Inadequacy in Rural Populations, Evaluation of Correction by Food Supplementation
The purpose of the research is to describe vitamin D levels and bone status in a rural Wisconsin population. It is probable that individuals of varying age and ethnicity require different amounts of D to achieve optimal status.
- Trial name
- NCT00690417
- Testing
- Cholecalciferol (vitamin D3)
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Rickets
Specturi Device - Feasibility Study
On a daily basis many (prematurely born) newborn are subjected to different urine collecting techniques to study biochemical abnormalities.
- Trial name
- NCT03105557
- Testing
- Urinary collecting device
- Where
- Netherlands
- Volunteers
- 20 people
- Sponsor
- Capturin Distribution B.V.
Infertility, Female, Vitamin D Deficiency
Vitamin D Status Among Infertile Women in Sweden
The goal of this prospective cohort study is to learn about the overall and seasonal prevalence of vitamin D insufficiency and its determinants in a population of women with infertility who will go through in vitro fertilization…
- Trial name
- NCT05848349
- Where
- Sweden
- Volunteers
- 265 people, healthy volunteers welcome
- Sponsor
- Vastra Gotaland Region
Vitamin D Deficiency
The D-BIICEP Study
Athletes and active individuals have been identified as an at-risk group for a low vitamin D status, specifically those residing in countries of higher latitude (such as the United Kingdom).
- Trial name
- D-BIICEP (NCT03253055)
- Testing
- DEXA, pQCT, Lifestyle Questionnaire
- Where
- 2 sites in United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Surrey
Vitamin D Deficiency
Genetic, Dietary and Environmental Influences on Vitamin D Metabolism
Determine differences in serum vitamin D metabolism by genetic ancestry.
- Trial name
- NCT02590614
- Testing
- 800 IU Vitamin D
- Where
- United States
- Volunteers
- 412 people, healthy volunteers welcome
- Sponsor
- Milton S. Hershey Medical Center
Post Liver Transplant Infection
Effect of Preoperative Vitamin D Supplementation in Liver Transplant Recipients With Vitamin D Deficiency on Post Transplant Outcomes
Liver transplantation (LT) remains the ultimate option to cure intractable end stage liver disease. Vitamin D deficiency is very common in these subsets of patients.
- Trial name
- NCT06736093
- Testing
- Vitamin D3
- Where
- India
- Volunteers
- 140 people
- Sponsor
- Institute of Liver and Biliary Sciences, India
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Levels and Vitamin D Education in Geriatric Patients
Vitamin D is important to maintain good health. Although it is found in foods and vitamins, many people still have low vitamin D levels.
- Trial name
- NCT00273611
- Testing
- Pharmacist Education about Vitamin D
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- University of Colorado, Denver
Hypovitaminosis D
Cholecalciferol Supplementation for Sepsis in the ICU
Sepsis in a clinical entity that occurs in patients with serious infections. Though the severity of illness may vary, every year, approximately 1.6 million Americans are treated for sepsis.
- Trial name
- CSI (NCT01896544)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Massachusetts General Hospital
Vitamin D Deficiency, Critical Illness
Prevalence of Deficiency of Vitamin D in Critically Ill Patients
Vitamin D has been shown to related to clinical outcomes in critically ill patients. The object of this study is to investigate the prevalence of Vitamin D deficiency in critically ill patients with various length of ICU stay .
- Trial name
- NCT03639584
- Where
- Taiwan
- Volunteers
- 662 people
- Sponsor
- National Taiwan University Hospital
Hypophosphatasia (HPP)
Safety and Efficacy of Asfotase Alfa in Juvenile Patients With Hypophosphatasia (HPP)
This clinical trial studied the safety and efficacy of asfotase alfa in children with HPP compared to a historical control group.
- Trial name
- NCT00952484
- Testing
- asfotase alfa
- Where
- 2 sites in United States, Canada
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Hypovitaminosis D, Hand Grasp
Vitamin D and Hand Grip Strength at 5 Years in Odense Child Cohort
This study will encompass an analysis of an eventual association between vitamin D status (maternal during pregnancy, at birth or at 5 years) and hand grip strength at 5 years in children from Odense Child Cohort.
- Conditions
- Hypovitaminosis D, Hand Grasp, Children
- Trial name
- VITHGS (NCT03381378)
- Volunteers
- 881 people
- Sponsor
- Odense University Hospital
Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1
Baby Detect : Genomic Newborn Screening
Newborn screening (NBS) is a global initiative of systematic testing at birth to identify babies with pre-defined severe but treatable conditions.
- Conditions
- Congenital Adrenal Hyperplasia, Familial Hyperinsulinemic Hypoglycemia 1, Phosphoglucomutase 1 Deficiency, Maturity Onset Diabetes of the Young
- Trial name
- BabyDetect (NCT05687474)
- Where
- Belgium
- Volunteers
- 6,824 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire de Liege
Endstage Renal Disease
The Effect of Increasing Dialysate Magnesium on Calcification Propensity in Subjects on Haemodialysis
The purpose of this trial is to examine the effect of increasing dialyse magnesium on serum calcification propensity in subjects with end-stage renal disease treated with haemodialysis.
- Trial name
- NCT02977117
- Testing
- Dialysate magnesium (1.0 mmol/L), Dialysate magnesium (0.5 mmol/L)
- Where
- Denmark
- Volunteers
- 59 people
- Sponsor
- Iain Bressendorff
Implant Stability With Vitamin D Deficiency
Stability of Dental Implants Placed in Patients With Vitamin D Deficiency Using Sequential Drilling Versus a New One Single Drilling Design
Vitamin D considers as the most potent effect on calcium level in blood it was found that vitamin D target mainly bone tissue intestine and kidney for calcium absorption In bone, vitamin D stimulates mainly the activity of…
- Trial name
- NCT03695562
- Testing
- sequential drilling technique
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Cairo University
Vitamin D Deficiency
A Single High-dose Oral Supplement of Vitamin D in Young Chinese
evaluated the effect and safety of a single high dose of cholecalciferol in Chinese young people.
- Trial name
- NCT02158143
- Testing
- vitamin D3
- Where
- China
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Chinese Academy of Sciences
Vitamin D Deficiency
Vitamin D in Periodontal and Cardiovascular Disease Progression
Vitamin D has been considered to possess anti-inflammatory and antimicrobial activity which may be a link for the known interaction of periodontitis (CP) and coronary heart disease (CHD).
- Trial name
- NCT03873935
- Testing
- Evaluation of periodontal status
- Where
- Italy
- Volunteers
- 179 people, healthy volunteers welcome
- Sponsor
- University of Messina
CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder, Secondary Hyperparathyroidism
The Longitudinal PTH-Study
The main study aim is to quantify the agreement between the analytical results provided by two third generation and two second generation Parathyroid hormone (PTH) assays.
- Conditions
- CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder, Secondary Hyperparathyroidism, Kidney Replacement
- Trial name
- NCT03464149
- Testing
- One armed study, blood from each patient is analysed by four assays ( two 3rd generation and two 2nd generation assays)
- Where
- Austria
- Volunteers
- 132 people
- Sponsor
- Medical University of Vienna
Elderly, Metabolic Syndrome
Metabolic Syndrome and Vitamin D Level in Old People
In 2012, a cross-sectional survey sampling 1,966 community-dwelling old people was conducted. Structurized questionnaires were interviewed face-to-face by well-trained staffs.
- Conditions
- Elderly, Metabolic Syndrome, Vitamin D Deficiency, Ostreocalcin
- Trial name
- NCT03344718
- Where
- Taiwan
- Volunteers
- 549 people, healthy volunteers welcome
- Sponsor
- National Cheng-Kung University Hospital