Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency, Type2 Diabetes
Effect of Vitamin D Supplementation on Inflammatory Markers
Previous studies have shown that improving vitamin D status among the elderly may lead to an improvement in some inflammatory markers, especially with patients with type 2 diabetes.
- Trial name
- NCT03782805
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Where
- Lebanon
- Volunteers
- 88 people
- Sponsor
- Université d'Auvergne
Healthy, Vitamin D Deficiency
Vitamin D Deficiency in Adolescent Girls
Fibroblast growth factor 23 (FGF23) is a newly discovered hormone which regulates phosphate and vitamin D levels. In this study, we are looking at what the normal levels of FGF23 are in adolescent girls and how these levels vary…
- Trial name
- NCT01180946
- Testing
- ergocalciferol
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Hypophosphatasia
Post-approval Clinical Study of Asfotase Alfa Treatment for Patients With Hypophosphatasia (HPP) in Japan
This is a multicenter study in Japan. Eleven sites which have already participated in the investigator-initiated clinical study (Early Access Program) will participate in this study.The objective of this study is to gain further…
- Trial name
- NCT02531867
- Testing
- Asfotase Alfa
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Hypovitaminosis D, Spinal Disease
Analysis of Hypovitaminosis D and Osteopenia/Osteoporosis in Spinal Disease Patients Who Underwent a Spinal Fusion at Illinois Neurological Institute, Peoria, IL., a Retrospective Review From November 1, 2012 to October 31, 2014 and Prospective Pilot From July 1, 2015-June 30, 2016
The purpose of this study is to determine if there is correlation between Vitamin D deficiency and spinal disease/spinal fusion surgery.
- Conditions
- Hypovitaminosis D, Spinal Disease, Osteoporosis
- Trial name
- NCT02534714
- Where
- United States
- Volunteers
- 460 people
- Sponsor
- OSF Healthcare System
Hemophilia A, Hemophilia B
Correlation Between Vitamin D Status and Bone Mineral Density in Patients With Hemophilia
Study will look at baseline Vitamin D levels, calcium, albumin, liver enzymes, testosterone, osteocalcin, urine N telopeptides, bone mineral density, nutritional assessment and physical activity assessment of boys with hemophilia…
- Conditions
- Hemophilia A, Hemophilia B, Vitamin D Deficiency
- Trial name
- NCT01090206
- Testing
- Vitamin D and calcium
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Virginia Commonwealth University
COVID-19, Vitamin D Deficiency
Investigating the Role of Vitamin D in the Morbidity of COVID-19 Patients
The 2019 novel coronavirus disease (COVID-2019) pandemic is an enormous health issue of worldwide scale. Prevention and/or treatment with a widely-available and already-licensed product such as vitamin D (cholecalciferol) could…
- Trial name
- NCT04386044
- Where
- United Kingdom
- Volunteers
- 986 people
- Sponsor
- Tameside General Hospital
Coccyx Disorder, Neuropathic Pain
Vitamin D Level and Pain Type in Coccygodynia
Coccygodynia is a painful clinical picture of the sacrococcygeal region.Pain in coccygodynia may be somatic, neuropathic or mixed.
- Conditions
- Coccyx Disorder, Neuropathic Pain, Nociceptive Pain, Vitamin D Deficiency
- Trial name
- NCT05047393
- Testing
- Current blood vitamin D level and painDetect questionairre score will be detected
- Where
- Turkey (Türkiye)
- Volunteers
- 51 people
- Sponsor
- Cumhuriyet University
Vitamin D Deficiency
Oral Vitamin D Substitution Weekly or Monthly and Adherence
Vitamin D deficiency (defined as 25(OH)-vitamin D serum level <50 nmol/l) is cured with supplementation by mouth. National guidelines recommend the administration of 800 IU cholecalciferol daily for an effective treatment…
- Trial name
- NCT03141593
- Testing
- Vitamin D: liquid form, start weekly, Vitamin D: liquid form, start monthly, Vitamin D: solid form, start weekly
- Where
- Switzerland
- Volunteers
- 97 people
- Sponsor
- University Hospital, Basel, Switzerland
Pancreatitis, Chronic
Prospective Study of Efficacy of Intra-muscular Vitamin D3 in Tropical Calcific Pancreatitis
The purpose of this study is to determine the efficacy of 2 different doses of intramuscular (IM) vitamin D3 as compared to an oral replacement dose in normalizing vitamin D levels in the blood of patients with tropical calcific…
- Trial name
- NCT00956839
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- India
- Volunteers
- 40 people
- Sponsor
- Sanjay Gandhi Postgraduate Institute of Medical Sciences
Vitamin D Deficiency, Pregnancy
Effects of Vitamin D on Health Promotion During Pregnancy and Its Impact on Prematurity-Related Outcome
The VitDTracking study focuses on the relevance of maternal vitamin D levels and their association with prematurity, aiming to improve maternal and child health outcomes, particularly by reducing avoidable preterm births.
- Trial name
- VitDTracking (NCT06292195)
- Testing
- Exposure
- Where
- 3 sites in Portugal
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- University of Évora
Vitamin D Deficiency
Vitamin D Levels in Umbilical Cord and It's Impact on Infant and Children's Health (VITADi Study)
This study is a cohort study that aims to assess the relationship between Vitamin D Levels in infant and the risk of anemia, atopic dermatitis, diarrhea and cardiovascular disorders in newborn.
- Trial name
- VITADi (NCT05419973)
- Testing
- Anthropometric measurement for pregnant women, Anthropometric measurement for infants, Blood sampling
- Where
- Indonesia
- Volunteers
- 100 people
- Sponsor
- Hasanuddin University
Vitamin D Deficiency, Primary Open- Angle Glaucoma
Associations of Vitamin D Deficiency and Vitamin D Receptor Polymorphisms With the Risk of Primary Open-angle Glaucoma
This study investigated whether vitamin D receptor gene polymorphism is altered in primary open-angle glaucoma subjects carrying the risk allele and vitamin D deficiency is an important factor in the development of glaucoma.
- Trial name
- NCT02539745
- Testing
- Vitamin D receptor polymorphic analysis, Serum levels of 1a, 25-Dihydroxyvitamin D3
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Lv Yingjuan
Infertility,Male, Vitamin D Deficiency
Vitamin D and Human Sperm DNA Fragmentation
The purpose of this study will be to investigate if there is a correlation between Vitamin D levels and Sperm DNA Fragmentation. This is a prospective, cohort study.
- Trial name
- NCT03829943
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 230 people
- Sponsor
- Sanford Health
Vitamin D Deficiency
Vitamin D Supplementation in Children
Prevalence of vitamin D deficiency in children in the northern country during winter season is very high (up to 90%). Vitamin D supplementation at a dose 600 -1000 IU/d is recommended in Polish children from September till April.
- Trial name
- MeltD (NCT03402698)
- Testing
- cholecalciferol
- Where
- Poland
- Volunteers
- 73 people, healthy volunteers welcome
- Sponsor
- Children's Memorial Health Institute, Poland
Hypophosphatemic Rickets, Growth Disorders
Effects of GH on Body Proportions and Final Height in X-Linked Hypophosphatemic Rickets
X-linked hypophosphatemic rickets (XLH) is characterized by rickets, disproportionate short stature, impaired renal phosphate reabsorption and vitamin D metabolism.
- Conditions
- Hypophosphatemic Rickets, Growth Disorders, Somatropin Therapy
- Trial name
- NCT00473187
- Testing
- somatropin
- Where
- Germany
- Sponsor
- University of Rostock
Meniere Disease, Osteoporosis
Menier's Disease - Bone Density Study
Meniere's disease is a progressive and debilitating inner ear disease characterised by vertigo and hearing loss. Several studies have linked Menierws disease with lower bone density and lower vitamin D levels.
- Conditions
- Meniere Disease, Osteoporosis, Osteopenia, Vitamin D Deficiency
- Trial name
- NCT05322538
- Testing
- vitamin D plasma levels baseline, Dual-energy X-ray absorptiometry at baseline, cervical Vestibular evoked myogenic potentials at baseline
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- HaEmek Medical Center, Israel
X-linked Hypophosphatemia
Foot Disorders in X-linked Hypophosphatemia
This study aimed to characterize foot pathologies using X-rays and clinical examination and assess related outcome scores in adolescents and adults with X-linked Hypophophatemia
- Trial name
- NCT06067932
- Testing
- Foot X rays, Clinical examination + scores
- Where
- Austria
- Volunteers
- 28 people
- Sponsor
- Orthopedic Hospital Vienna Speising
Ulcerative Colitis, Vitamin D Deficiency
Observation of the Effect of Vitamin D Supplementation on Chronic Course of Patients With Ulcerative Colitis Based on Vitamin D Receptor Fok I Gene Polymorphism
Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of ulcerative colitis patients, analyze whether the effect of Vitamin D drops on UC patients is affected by factors such as disease…
- Conditions
- Ulcerative Colitis, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04309058
- Testing
- Vitamin D drops
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Pre-Eclampsia
Association Between Vitamin D Deficiency and Preeclampsia: A Case Control Study
To find out if lower levels of vitamin D is more prevalent in preeclamptic women
- Trial name
- NCT02677233
- Volunteers
- 90 people
- Sponsor
- Ain Shams Maternity Hospital
Vitamin D Deficiency
Environmental Influences on Vitamin D Status
Vitamin D deficiency is a common problem. The principal source of vitamin D for humans is solar exposure, with cutaneous synthesis of vitamin D by photoconversion of 7-dehydrocholesterol in the skin to pre-vitamin D3.
- Trial name
- Alaska/Hawaii (NCT00780247)
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Creighton University
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